ACURA RDX 2023 Maintenance User Manual

Before Performing Maintenance

Inspection and Maintenance

Inspection and Maintenance
For your safety, perform all listed inspections and maintenance to keep your vehicle in good condition. If you become aware of any abnormality (noise, smell, insufficient brake fluid, oil residue on the ground, etc.), have your vehicle inspected by a dealer. (Note, however, that service at a dealer is not mandatory to keep your warranties in effect.) Refer to the separate maintenance booklet for detailed maintenance and inspection information.

• Types of Inspection and Maintenance
• Routine inspections
  Perform inspections before long distance trips, when washing the vehicle, or when refueling.
  Maintenance P. 26

Periodic inspections

• Check the brake fluid level monthly.
  Checking the Brake Fluid P. 603
  Check the tire pressure monthly. Examine the tread for wear and foreign objects. 2 Checking and Maintaining Tires P. 614
  Check the operation of the exterior lights monthly.
  Replacing Light Bulbs P. 605
  Check the condition of the wiper blades at least every six months.
  Checking and Maintaining Wiper Blades P. 609

Inspection and Maintenance
Maintenance, replacement, or repair of emissions control devices and systems may be done by any automotive repair establishment or individuals using parts that are “certified” to EPA standards.
According to state and federal regulations, failure to perform maintenance on the maintenance main items marked with # will not void your emissions warranties. However, all maintenance services should be performed in accordance with the intervals indicated by the driver information interface.
Maintenance Service Items P. 589
If you want to perform complex maintenance tasks that require more skills and tools, you can purchase a subscription to the Service Express website at www.techinfo.acura.com.
Authorized Manuals P. 700
If you want to perform maintenance yourself, make sure that you have the necessary tools and skills first. After performing maintenance, update the records in the separate maintenance booklet.

Safety When Performing Maintenance
Some of the most important safety precautions are given here. However, we cannot warn you of every conceivable hazard that can arise in performing maintenance. Only you can decide whether you should perform a given task.

Maintenance Safety

• To reduce the possibility of fire or explosion, keep cigarettes, sparks, and flames away from the battery and all fuel related parts.
• Never leave rags, towels, or other flammable objects under the hood.
  • Heat from the engine and exhaust can ignite them, causing a fire.
• To clean parts, use a commercially available degreaser or parts cleaner, not gasoline.
• Wear eye protection and protective clothing when working with the battery or compressed air.
• Engine exhaust contains carbon monoxide, which is poisonous and can kill you.
  • Only operate the engine if there is sufficient ventilation.

Vehicle Safety

• The vehicle must be in a stationary condition.
  • Make sure your vehicle is parked on level ground, the parking brake is set, and the engine is off.
• Make sure that the radiator fan is stopped before inspecting the engine compartment.
  • If you stop the engine while its temperature is high, the radiator fan may operate automatically.
• Be aware that hot parts can burn you.
  • Make sure to let the engine and exhaust system cool thoroughly before touching vehicle parts.
• Be aware that moving parts can injure you.
  • Do not start the engine unless instructed, and keep your hands and limbs away from moving parts.
  • Do not open the hood while the Auto Idle Stop function is activated.

WARNING
Improperly maintaining this vehicle or failing to correct a problem before driving can cause a crash in which you can be seriously hurt or killed.
Always follow the inspection and maintenance recommendations according to the schedules in this owner’s manual.

WARNING
Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed.
Always follow the procedures and precautions in this owner’s manual.

Parts and Fluids Used in Maintenance Service
The use of Acura genuine parts and fluids is recommended when maintaining and servicing your vehicle. Acura genuine parts are manufactured according to the same high quality standards used in Acura vehicles.

NOTICE
Do not press the engine cover forcibly. This may damage the engine cover and component parts.

Maintenance Minder

If the engine oil life is less than 15%, you will see the Maintenance Minder messages appear on the driver information interface every time you set the power mode to ON. The messages notify you when to change the engine oil, or when to bring your vehicle to a dealer for indicated maintenance services.

To Use Maintenance MinderTM
Displaying the Maintenance Minder Information
Maintenance items, which should be serviced at the same time that you replace the engine oil, appear on the driver information interface.
You can view them on the engine oil life screen at any time.

1. Set the power mode to ON.
2. Press the right selector wheel until the content is displayed.
3. Roll the right selector wheel until the Maintenance screen is displayed. The engine oil life appears on the driver information interface along with maintenance items due soon.

Based on the engine operating conditions, the remaining engine oil life is calculated and displayed as a percentage.

Displayed Engine Oil	Calculated Engine Oil
Life (%)	Life (%)
100	100 to 91
90	90 to 81
80	80 to 71
70	70 to 61
60	60 to 51
50	50 to 41
40	40 to 31
30	30 to 21
20	20 to 16
15	15 to 11
10	10 to 6
5	5 to 1
0	0

There is a list of maintenance main and sub items you can view on the driver information interface.
Maintenance Service Items P. 589

Maintenance Minder Messages on the Multi-Information Display
Maintenance Message	Oil Life Display	Explanation
—		When you select the Maintenance screen, it displays codes for maintenance items due at the next engine oil change, along with the percentage of engine oil life remaining.
Maintenance Due Soon	15%	The remaining engine oil life is 15 to 6 percent. Once you switch the display by rolling the right selector wheel, this message will go off.

Maintenance Message	Oil Life Display	Explanation	Information
Maintenance Due Now	5%	The remaining engine oil life is 5 to 1 percent. Roll the right selector wheel to switch to another display.	The engine oil has almost reached the end of its service life, and the maintenance items should be inspected and serviced as soon as possible.
Maintenance Past Due	Negative Distance	The remaining engine oil life has passed its service life, and a negative distance appears after driving over 10 miles (U.S. models) or 10 km (Canadian models). Roll the right selector wheel to switch to another display.	The engine oil life has passed. The maintenance items must be inspected and serviced immediately.

Maintenance The system message indicator ( ) comes on along with the Maintenance Minder message.

Maintenance Service Items

U.S. models

Maintenance Service Items
Adjust the valves during services A, B, 1, 2, or 3 if they are noisy.

CODE : Maintenance Main Items

A

• Replace engine oil*1

B

• Replace engine oil*1 and oil filter
• Inspect front and rear brakes
• Check expiration date for tire repair kit bottle*
• Inspect tie rod ends, steering gearbox, and boots
• Inspect suspension components
• Inspect driveshaft boots
• Inspect brake hoses and lines (Including ABS/VSA®)
• Inspect all fluid levels and condition of fluids
• Inspect exhaust system#
• Inspect fuel lines and connections#

1. If a message does not appear more than 12 months after the display is reset, change the engine oil every year.
   • See information on maintenance and emissions warranty.
2. If you drive in dusty conditions, replace the air cleaner element every 15,000 miles (24,000 km).

CODE: Maintenance Sub Items

1. Rotate tires
2. Replace air cleaner element*2
   • Replace dust and pollen filter*3
   • Inspect drive belt
3. Replace transmission and transfer* fluid
4. Replace spark plugs
   • Inspect valve clearance
5. Replace engine coolant
6. Replace rear differential fluid*, *4
7. Replace brake fluid*5

• See information on maintenance and emissions warranty.
  If you drive in dusty conditions, replace the air cleaner element every 15,000 miles (24,000 km).
  recommended by the Maintenance Minder. If you regularly drive your vehicle under these conditions, have the differential fluid changed at 7,500 miles (12,000 km), then every 15,000 miles (24,000 km).
•  If a Maintenance Minder Indicator does not appear more than 36 months after the display for item 7 is reset, change the brake fluid every 3 years.

Canadian models
Maintenance Service Items

CODE: Maintenance Main Items

• Replace engine oil*1
  Replace engine oil*1 and oil filter
• Inspect front and rear brakes
• Check expiration date for Temporary Tire Repair Kit bottle (If equipped)
• Inspect tie rod ends, steering gearbox, and boots
• Inspect suspension components
• Inspect driveshaft boots
• Inspect brake hoses and lines (Including ABS/VSA®)
• Inspect all fluid levels and condition of fluids
• Inspect exhaust system#
• Inspect fuel lines and connections#
• Adjust the valves during services A, 0, 9, 1, 2, or 3 if they are noisy.

1. If a Maintenance Minder Indicator and message does not appear more than 12 months after the display is reset, change the engine oil every year.
   See information on maintenance and emissions warranty.
2. If you drive in dusty conditions, replace the air cleaner element every 15,000 miles (24,000 km).
   Not available on all models

CODE : Maintenance Sub Items

1. Rotate tires
2. Replace air cleaner element*2
   • Replace dust and pollen filter*3
   • Inspect drive belt
3. Replace transmission fluid and transfer fluid
4. Replace spark plugs
   • Inspect valve clearance
5. Replace engine coolant
6. Replace rear differential fluid*4
7. Replace brake fluid*5

•  If you drive primarily in urban areas that have high concentrations of soot in the air from industry and from diesel-powered vehicles, replace the dust and pollen filter every 15,000 miles (24,000 km).
• Driving in mountainous areas at very low vehicle speeds or trailer towing results in higher level of mechanical (Shear) stress to fluid. This requires differential fluid changes more frequently than recommended by the Maintenance Minder. If you regularly drive your vehicle under these conditions, have the differential fluid changed at 7,500 miles (12,000 km), then every 15,000 miles (24,000 km).
• If a Maintenance Minder Indicator does not appear more than 36 months after the display for item 7 is reset, change the brake fluid every 3 years.

Canadian models

CODE : Maintenance Sub Items

• Replace engine oil*1
  Replace engine oil*1 and oil filter

Adjust the valves during services A, 0, 9, 1, 2, or 3 if they are noisy.

1. If a Maintenance Minder Indicator and message does not appear more than 12 months after the display is reset, change the engine oil every year.
2.  If you drive in dusty conditions, replace every 24,000 km (15,000 miles).
3. If you drive primarily in urban areas that have high concentrations of soot in the air from industry and from diesel-powered vehicles, replace every 24,000 km (15,000 miles).
4. Driving in mountainous areas at very low vehicle speeds or trailer towing results in higher level of mechanical (Shear) stress to fluid. This requires differential fluid changes more frequently than recommended by the Maintenance Minder.
   If you regularly drive your vehicle under these conditions, have the differential fluid changed at 12,000 km (7,500 miles), then every 24,000 km (15,000 miles).
5. If a Maintenance Minder Indicator does not appear more than 36 months after the display for item 7 is reset, change the brake fluid every 3 years.
   See information on maintenance and emissions warranty.

CODE : Maintenance Sub Items

• Rotate tires
  Replace air cleaner element*2
  Replace dust and pollen filter*3
  Inspect drive belt
  Replace transmission fluid and transfer fluid
  Replace spark plugs
  Inspect valve clearance
  Replace engine coolant
  Replace rear differential fluid*4
  Replace brake fluid*5
  Service front and rear brakes
  Inspect these items:
  Tie rod ends, steering gearbox, and boots
  Suspension components
  Driveshaft boots
  Brake hoses and lines (including ABS/VSA®)
  All fluid levels and condition of fluids
  Exhaust system#
  Fuel lines and connections#

Resetting the Display
Reset the maintenance minder information display if you have performed the maintenance service.

1. Set the power mode to ON.
2. Press the right selector wheel until the content is displayed.
3. Roll the right selector wheel until the Maintenance screen is displayed.
4. Press and hold the right selector wheel for about 10 seconds to enter the reset mode.
5. Roll the right selector wheel to select a maintenance item to reset, or to select All due items (You can also press the right selector wheel to the left to end the process).
6. Press the right selector wheel to reset the selected item.
7. Repeat from step 4 for other items you wish to reset.

NOTICE
Failure to reset the Maintenance MinderTM after a maintenance service results in the system showing incorrect maintenance intervals, which can lead to serious mechanical problems.
The dealer will reset the Maintenance MinderTM display after completing the required maintenance service. If someone other than a dealer performs maintenance service, reset the Maintenance MinderTM display yourself.
You can also reset the Maintenance MinderTM display using the audio/information screen.
Customized Features P. 359

Maintenance Under the Hood

Maintenance Items Under the Hood

Opening the Hood

1. Park the vehicle on a level surface, and set the parking brake.
2. Pull the hood release handle under the driver’s side lower corner of the dashboard.
   • The hood will pop up slightly.
     
3. Push the hood latch lever (located under the front edge of the hood to the center) to the side and raise the hood. Once you have raised the hood slightly, you can release the lever.
4. Lift the hood up most of the way.
   • The hydraulic supports will lift it up the rest of the way and hold it up.

When closing, gently lower the hood, then remove your hand at a height of approximately 12 inches (30 cm) and press down firmly with both hands, making sure both right and left latches are firmly locked in place.

NOTICE
Do not open the hood when the wiper arms are raised. The hood will strike the wipers, resulting in possible damage to the hood and/or the wipers.

NOTICE
Do not press the engine cover forcibly. This may damage the engine cover and component parts.
When closing the hood, check that both right and left latches are securely latched.
If the hood latch lever moves stiffly, or if you can open the hood without lifting the lever, the latch mechanism should be cleaned and lubricated.
Do not open the hood while the Auto Idle Stop function is activated.

Engine Compartment Cover
The component parts in the engine compartment are protected by a cover.
You may need to remove the cover when you perform certain maintenance work. Pull up on the engine compartment cover carefully until all pins are removed from their grommets.

Recommended Engine Oil
Use a genuine engine oil or another commercial engine oil of suitable type and viscosity (for the ambient temperature) as shown in the image that follows.
Oil is a major contributor to your engine’s performance and longevity. If you drive the vehicle with insufficient or deteriorated oil, the engine may fail or be damaged.

Genuine Engine Oil	Commercial Engine Oil
Acura Genuine Motor Oil	Premium-grade 0W-20 detergent oil with an API Certification Seal on the container.
Ambient Temperature	Ambient Temperature

Formulated to improve fuel economy.

Synthetic oil
You may also use synthetic motor oil if it is labeled with the API Certification Seal and is the specified viscosity grade.

Engine Oil Additives
Your vehicle does not require oil additives. In fact, they may adversely affect the engine performance and durability.
The following seal indicates the oil is energy conserving and that it meets the American Petroleum Institute’s latest requirements.

Oil Check
We recommend that you check the engine oil level every time you refuel.
Park the vehicle on level ground.
Wait approximately three minutes after turning the engine off before you check the oil.

1. Remove the dipstick (orange).
2. Wipe the dipstick with a clean cloth or paper towel.
3. Insert the dipstick back all the way into its hole.
   
4. Remove the dipstick again, and check the level. It should be between the upper and lower marks. Add oil if necessary.

If the oil level is near or below the lower mark, slowly add oil, being careful not to overfill.

Adding Engine Oil

1. Unscrew and remove the engine oil fill cap.
2. Add oil slowly.
3.  Reinstall the engine oil fill cap, and tighten it securely.
4. Wait for three minutes and recheck the engine oil dipstick.

NOTICE
Do not fill the engine oil above the upper mark. Overfilling the engine oil may result in leaks and engine damage.
If any oil spills, wipe it away immediately. Spilled oil may damage the engine compartment components.

Changing the Engine Oil and Oil Filter
You must change the engine oil and oil filter regularly in order to maintain the engine’s lubrication. The engine may be damaged if they are not changed regularly.
Change the oil and filter in accordance with the maintenance message on the driver information display.

1. Run the engine until it reaches normal operating temperature, and then turn the engine off.
2. Open the hood and remove the engine oil fill cap.
3. Remove the slotted head screws by turning 90° counterclockwise on the undercarriage and remove the under cover.
4.  Remove the drain bolt and washer from the bottom of the engine, and drain the oil into a suitable container.
   NOTICE
   You may damage the environment if you do not dispose of the oil in a suitable way. If you are changing the oil by yourself, appropriately dispose of the used oil. Put the oil in a sealed container and take it to a recycling center. Do not throw the oil away into a garbage can or onto the ground.
   
5. Remove the oil filter and dispose of the remaining oil.
6. Check that the filter gasket is not stuck to the engine contact surface.
   • If it is stuck, you must detach it.
7. Wipe away dirt and dust adhering to the contact surface of the engine block, and install a new oil filter.
   • Apply a light coat of new engine oil to the filter gasket.
8. Put a new washer on the drain bolt, then reinstall the drain bolt.
   • Tightening torque:
     29 lbf∙ft (40 N∙m, 4.0 kgf∙m)
9. Pour the recommended engine oil into the engine.
   • Engine oil change capacity (including filter):
     5.0 US qt (4.8 L)
10. Reinstall the engine oil fill cap securely and start the engine.
11. Run the engine for a few minutes, and then check that there is no leak from the drain bolt or oil filter.
12. Stop the engine, wait for three minutes, and then check the oil level on the dipstick.
    • If necessary, add more engine oil.

You will need a special wrench to replace the oil filter. You can buy this wrench from a dealer.
When installing the new oil filter, follow the instructions supplied with the oil filter.
Reinstall the engine oil fill cap. Start the engine. The low oil pressure indicator should go off within five seconds. If it does not, turn off the engine, and check your work.

Engine Coolant

Specified coolant: Acura Long Life Antifreeze/Coolant Type 2|
This coolant is premixed with 50% antifreeze and 50% water. Do not add any straight antifreeze or water.
We recommend you check the engine coolant level every time you refuel. Check the reserve tank first. If it is completely empty, also check the coolant level in the radiator. Add the engine coolant accordingly.

Reserve Tank

1. Make sure the engine and radiator are cool.
2.  Check the amount of coolant in the reserve tank.
   1.  If the coolant level is below the MIN mark, add the specified coolant until it reaches the MAX mark.
3. Inspect the cooling system for leaks.

NOTICE
Genuine Acura engine coolant is a 50/50 mixture of antifreeze and water that can withstand freezing at temperatures as low as about −31°F (−35°C). If your vehicle is consistently subjected to temperatures below this, the concentration of antifreeze in the coolant should be increased. Consult a dealer for details.
If Acura antifreeze/coolant is not available, you may use another major brand of non-silicate coolant as a temporary replacement. Check that it is a high quality coolant recommended for aluminum engines. Continued use of any non-Acura coolant can result in corrosion, causing the cooling system to malfunction or fail. Have the cooling system flushed and refilled with Acura antifreeze/coolant as soon as possible.
Do not add rust inhibitors or other additives to your vehicle’s cooling system. They may not be compatible with the coolant or with the engine components.

Radiator

1. Make sure the engine and radiator are cool.
2. Remove the engine compartment cover. 2 Engine Compartment Cover P. 615
3. Turn the radiator cap 1/8 turn counter-clockwise and relieve any pressure in the cooling system.
4. Push down and turn the radiator cap counter-clockwise to remove it.
5. The coolant level should be up to the base of the filler neck. Add coolant if it is low.
6. Put the radiator cap back on, and tighten it fully.

WARNING
Removing the radiator cap while the engine is hot can cause the coolant to spray out, seriously scalding you.
Always let the engine and radiator cool down before removing the radiator cap.

NOTICE
Pour the fluid slowly and carefully so you do not spill any. Clean up any spills immediately; they can damage components in the engine compartment.

Transmission Fluid
Automatic Transmission Fluid
Specified fluid: Acura ATF-type 2.0
Have a dealer check the fluid level and replace if necessary.
Do not attempt to check or change the automatic transmission fluid yourself.

NOTICE
Do not mix Acura ATF-type 2.0 with other transmission fluids.
Using a transmission fluid other than Acura ATF-type 2.0 may adversely affect the operation and durability of your vehicle’s transmission, and damage the transmission.
Any damage caused by using a transmission fluid that is not equivalent to Acura ATF-type 2.0 is not covered by Acura’s new vehicle limited warranty.

Brake Fluid
Specified fluid: Acura Heavy Duty Brake Fluid DOT 3

Checking the Brake Fluid
The fluid level should be between the MIN and MAX marks on the side of the reserve tank.

NOTICE
Brake fluid marked DOT 5 is not compatible with your vehicle’s braking system and can cause extensive damage.
If the specified brake fluid is not available, you should use only DOT 3 or DOT 4 fluid from a sealed container as a temporary replacement.
Using any non-Acura brake fluid can cause corrosion and decrease the longevity of the system. Have the brake system flushed and refilled with Acura Heavy Duty Brake Fluid DOT 3 as soon as possible.
If the brake fluid level is at or below the MIN mark, have a dealer inspect the vehicle for leaks or worn brake pads as soon as possible.

Refilling Window Washer Fluid
Open the cap and check the amount of window washer fluid.
If the level is low, fill the washer reservoir.

Canadian models
If the washer fluid is low, a message appears on the multi-information display.
Pour the washer fluid carefully. Do not overflow the reservoir.

NOTICE
Do not use engine antifreeze or a vinegar/water solution in the windshield washer reservoir. Antifreeze can damage your vehicle’s paint. A vinegar/water solution can damage the windshield washer pump.
Use only commercially available windshield washer fluid.
Avoid prolonged use of hard water to prevent lime scale buildup.

Replacing Light Bulbs

Headlights
Headlights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Front Turn Signal/Parking, Chicane Daytime Running and Front Side Marker Lights
Front turn signal/parking, daytime running and front side marker lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Fog Lights*
Fog lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Side Turn Signal/Emergency Indicator Lights 
Door mirror side turn lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

The headlight aim is set by the factory, and does not need to be adjusted. However, if you regularly carry heavy items in the cargo area or tow a trailer, have the aiming readjusted at a dealer or by a qualified technician.

Rear Turn Signal Light Bulbs

When replacing, use the following bulbs.
Rear Turn Signal Light: 21 W (PY21W Amber/Silver)

1. Remove the cover by prying on the edge using a flat-tip screwdriver.
   • Wrap the flat-tip screwdriver with a cloth to prevent scratches.
     
2.  Use a Phillips-head screwdriver to remove the bolts.
3. Pull the light assembly out of the rear pillar.
   
4. Turn the socket counterclockwise and remove it.
5. Remove the old bulb and insert a new bulb.

ChicaneTM Taillights, Brake and Rear Side Marker Lights
Taillights, brake and rear side marker lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

ChicaneTM Taillights/Brake and Back-Up Lights
Taillights/brake and back-up lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Rear License Plate Light
Rear license plate light is LED type. Have an authorized Acura dealer inspect and replace the light assembly.

High-Mount Brake Light
High-mount brake light is LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Puddle Lights*
Puddle lights are LED type. Have an authorized Acura dealer inspect and replace the light assembly.

Checking and Maintaining Wiper Blades

Checking Wiper Blades
If the wiper blade rubber has deteriorated, it will leave streaks, become noisy, and the hard surfaces of the blade may scratch the window glass.

Changing the Front Wiper Blade Rubber

1. Set the power mode to VEHICLE OFF.
2. While holding the wiper switch in the MIST position, set the power mode to ON, then to VEHICLE OFF.
   • Both wiper arms are set to the maintenance position as shown in the image.
3. Lift both wiper arms
   NOTICE
   When lifting the wiper arms, always follow the instructions to move them into the maintenance position.
   The wiper arms may be damaged if they are moved manually.
   NOTICE
   Avoid dropping the wiper arm onto the windshield, it may damage the wiper arm and/or the windshield.
4. Press up on and hold the tab, then slide the holder off the wiper arm.
   
5. Pull the end of the wiper blade in the direction of the arrow in the image until it is out of the holder’s end cap.
   
6. Pull the wiper blade in the opposite direction to slide it out of the holder.
   
7. Insert the flat side of the new wiper blade onto the bottom part of the holder. Insert the blade all the way.
8. Install the end of the wiper blade into the cap.
9. Slide the holder onto the wiper arm until it locks.
10. Lower both wiper arms.
11. Set the power mode to ON and hold the wiper switch in the MIST position until both wiper arms return to the standard position.
    

Changing the Rear Wiper Blade Rubber

1. Raise the wiper arm off.
   
2. Slide the wiper blade out from the end with the indent.
3. Remove the retainers from wiper blade and mount to a new rubber blade.
   NOTICE Avoid dropping the wiper arm, it may damage the rear window.
4. Slide the new wiper blade onto the holder.
   Make sure it is engaged correctly, then install the wiper blade assembly onto the wiper arm.

Checking and Maintaining Tires

Checking Tires
To safely operate your vehicle, your tires must be of the proper type and size, in good condition with adequate tread, and properly inflated.

• Inflation guidelines
  Properly inflated tires provide the best combination of handling, tread life, and comfort. Refer to the driver’s doorjamb label or specifications page for the specified pressure.
• Underinflated tires wear unevenly, adversely affect handling and fuel economy, and are more likely to fail from overheating.
  Overinflated tires make your vehicle ride harshly, are more prone to road hazards, and wear unevenly.
  Every day before you drive, look at each of the tires. If one looks lower than the others, check the pressure with a tire gauge.
  At least once a month or before long trips, use a gauge to measure the pressure in all tires, including the spare*. Even tires in good condition can lose 1–2 psi (10–20 kPa, 0.1–0.2 kgf/cm2) per month.
• Inspection guidelines
  Every time you check inflation, also examine the tires and valve stems. Look for:
  • Bumps or bulges on the side or in the tread. Replace the tire if you find any cuts, splits, or cracks in the side of the tire. Replace it if you see fabric or cord.
  • Remove any foreign objects and inspect for air leaks.
  • Uneven tread wear. Have a dealer check the wheel alignment.
  • Excessive tread wear.
  • Wear Indicators P. 619
  • Cracks or other damage around valve stem.

WARNING
Using tires that are excessively worn or improperly inflated can cause a crash in which you can be seriously hurt or killed.
Follow all instructions in this owner’s manual regarding tire inflation and maintenance.
Measure the air pressure when tires are cold. This means the vehicle has been parked for at least three hours, or driven less than 1 mile (1.6 km). If necessary, add or release air until the specified pressure is reached.
If checked when hot, tire pressure can be as much as 4–6 psi (30–40 kPa, 0.3–0.4 kgf/cm2) higher than if checked when cold.
Have a dealer check the tires if you feel a consistent vibration while driving. New tires and any that have been removed and reinstalled should be properly balanced.

Tire and Loading Information Label
The label attached to the driver’s doorjamb provides necessary tire and loading information.

• Tire Labeling

The tires that came on your vehicle have a number of markings. Those you should be aware of are described as shown.

Tire Sizes
Whenever tires are replaced, they should be replaced with tires of the same size.

The tire and loading information label attached to the driver’s doorjamb contains:

• The number of people your vehicle can carry.
• The total weight your vehicle can carry. Do not exceed this weight.
• The original tire sizes for front, rear, and spare.
• The proper cold tire pressure for front, rear, and spare.

Following is an example of tire size with an explanation of what each component means.

P235/60 R18 102T
P: Vehicle type (P indicates passenger vehicle). 235: Tire width in millimeters.
60: Aspect ratio (the tire’s section height as a percentage of its width).
R: Tire construction code (R indicates radial).
18: Rim diameter in inches.
102: Load index (a numerical code associated with the maximum load the tire can carry).
T: Speed symbol (an alphabetical code indicating the maximum speed rating).

Tire Identification Number (TIN)
The tire identification number (TIN) is a group of numbers and letters that look like the example in the side column. TIN is located on the sidewall of the tire.

Glossary of Tire Terminology

Cold Tire Pressure – The tire air pressure when the vehicle has been parked for at least three hours or driven less than 1 mile (1.6 km).

Load Rating – Means the maximum load that a tire is rated to carry for a given inflation pressure.

Maximum Inflation Pressure – The maximum tire air pressure that the tire can hold.

Maximum Load Rating – Means the load rating for a tire at the maximum permissible inflation pressure for that tire.

Recommended Inflation Pressure – The cold tire inflation pressure recommended by the manufacturer.

Treadwear Indicators (TWI) – Means the projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread.

DOT B97R FW6X 2209
DOT: This indicates that the tire meets all requirements of the U.S. Department of Transportation.
B97R: Manufacturer’s identification mark. FW6X: Tire type code.

DOT Tire Quality Grading (U.S. Vehicles)
The tires on your vehicle meet all U.S. Federal Safety Requirements. All tires are also graded for treadwear, traction, and temperature performance according to Department of Transportation (DOT) standards. The following explains these gradings.

Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.

Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and one-half (1 1/2) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.

Uniform Tire Quality Grading
For example:
Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform to Federal Safety Requirements in addition to these grades.

Traction
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.

Temperature
The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.

Warning: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.

Wear Indicators
The groove where the wear indicator is located is about 1/16 inch (about 1.6 mm) shallower than elsewhere on the tire. If the tread has worn so that the indicator is exposed, replace the tire.
Worn out tires have poor traction on wet roads.

Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road conditions, vehicle loading, inflation pressure, maintenance history, speed, and environmental conditions (even when the tires are not in use).
In addition to regular inspections and inflation pressure maintenance, it is recommended that you have annual inspections performed once the tires reach five years old. All tires, including the spare*, should be removed from service after 10 years from the date of manufacture, regardless of their condition or state of wear.

Tire and Wheel Replacement
Replace your tires with radials of the same size, load range, speed rating, and maximum cold tire pressure rating (as shown on the tire’s sidewall). Using tires of a different size or construction can cause certain vehicle systems such as the ABS and Vehicle Stability AssistTM (VSA®) system to work incorrectly.
It is best to replace all four tires at the same time. If that isn’t possible, replace the front or rear tires in pairs.
Whenever you have a tire replaced or reset, make sure that the rubber valve stem is replaced and that the TPMS sensor is transferred from the old valve stem to the new one.
If you replace a wheel, make sure that the wheel’s specifications match those of the original wheels.

WARNING
Installing improper tires on your vehicle can affect handling and stability. This can cause a crash in which you can be seriously hurt or killed.
Always use the size and type of tires recommended in this owner’s manual.

Tire Rotation
Rotating tires according to the maintenance messages on the driver information interface helps to distribute wear more evenly and increase tire life.

• Tires without rotation marks
  Rotate the tires as shown here.
  
• Tires with rotation marks
  Rotate the tires as shown here.
  

Tires with directional tread patterns should only be rotated front to back (not from one side to the other). Directional tires should be mounted with the rotation indication mark facing forward, as shown below.

Winter Tires
If driving on snowy or frozen roads, mount all season marked M+S tires, snow tires, or tire chains; reduce speed; and maintain sufficient distance between vehicles when driving.
Be particularly careful when operating the steering wheel or brakes to prevent skidding.
Use tire chains, snow tires, or all season tires when necessary or according to the law.
When mounting, refer to the following points.

For winter tires:

• Select the size and load ranges that are the same as the original tires.
• Mount the tires to all four wheels.
  For tire chains:
• Install them on the front tires only.
• Because your vehicle has limited tire clearance, we strongly recommend using the chains listed below:

Cable-type: QCC Cobra 1046

• Follow the chain manufacturer’s instruction when installing. Mount them as tightly as you can.
  Check that the chains do not touch the brake lines or suspension.
  Drive slowly.
• WARNINGU
  Using the wrong chains, or not properly installing chains, can damage the brake lines and cause a crash in which you can be seriously injured or killed.

Follow all instructions in this owner’s manual regarding the selection and use of tire chains.

NOTICE
Traction devices that are the wrong size or improperly installed can damage your vehicle’s brake lines, suspension, body, and wheels. Stop driving if they are hitting any part of the vehicle.
When tire chains are mounted, follow the chain manufacturer’s instructions regarding vehicle operational limits.
If your vehicle is equipped with summer tires, be aware that these tires are not designed for winter driving conditions. For more information, contact a dealer.

Battery

Checking the Battery
The condition of the battery is monitored by a sensor located on the negative terminal of the battery. If there is a problem with this sensor, the driver information interface will display a warning message. If this happens, have your vehicle inspected by a dealer.
Check the battery terminals for corrosion monthly.If your vehicle’s battery is disconnected or goes dead:

• The audio system is disabled.
  Audio System Theft Protection P. 257
• The clock resets.
  Clock P. 154

Canadian models only

• The immobilizer system needs to be reset. 2 Immobilizer System Indicator P. 99

WARNING
The battery gives off explosive hydrogen gas during normal operation.
A spark or flame can cause the battery to explode with enough force to kill or seriously hurt you.
When conducting any battery maintenance, wear protective clothing and a face shield, or have a skilled technician do it.

WARNING: Battery post, terminals, and related accessories contain lead and lead compounds.
Wash your hands after handling.
When you find corrosion, clean the battery terminals by applying a baking powder and water solution. Clean the terminals with a damp towel. Cloth/towel dry the battery. Coat the terminals with grease to help prevent future corrosion.
When replacing the battery, the replacement must be of the same specifications.
Consult a dealer for more information.

• Charging the AGM Battery

AGM labeled batteries like those installed in your vehicle require a compatible charger to be properly charged. Damage to the battery can result if the battery is charged improperly or with the wrong equipment. For more information on how to charge your vehicle’s AGM battery, consult a dealer.

The battery installed in this vehicle is specifically designed for a model with Auto Idle Stop.
Using a battery other than this specified type may shorten the battery life, and prevent Auto Idle Stop from activating. If you need to replace the battery, make sure to select the specified type and size. Ask a dealer for more details.
The indicators for the Vehicle Stability AssistTM (VSA®) system, Adaptive Cruise Control (ACC) with Low Speed Follow, safety support, and low tire pressure/TPMS may come on after reconnecting the battery. Drive a short distance at more than 12 mph (20 km/h). The indicators should go off. If they do not, have your vehicle checked by a dealer.

Remote Transmitter Care

Replacing the Button Battery
Models without two-way keyless access remote
If the indicator does not come on when the button is pressed, replace the battery.

Battery type: CR2032

1. Remove the built-in key.
   
2. Pry on the edge of the cover using a flat-tip screwdriver to remove the cover.
   • Wrap the flat-tip screwdriver with a cloth to prevent scratches.
     
3.  Make sure to replace the battery with the correct polarity.

WARNING
CHEMICAL BURN HAZARD
The battery that powers the remote transmitter can cause severe internal burns and can even lead to death if swallowed. Keep new and used batteries away from children.
If you suspect that a child has swallowed the battery, seek medical attention immediately.

NOTICE
An improperly disposed of battery can damage the environment. Always confirm local regulations for battery disposal.
Replacement batteries are commercially available or at a dealer.

Models with two-way keyless access remote
If the indicator does not come on when the button is pressed, replace the battery.
Battery type: CR2032

1. Remove the built-in key.
   
2. Pry on the edge of the cover using a flat-tip screwdriver to remove the cover.
   1. Wrap the flat-tip screwdriver with a cloth to prevent scratches.
3. Make sure to replace the battery with the correct polarity

NOTICE
The Remote transmitter is equipped with two batteries: A standard replaceable CR2032 coin button battery and an integral non-replaceable rechargeable battery. To prevent permanent damage to the rechargeable battery, replace the CR2032 battery every three to four years.

Climate Control System Maintenance

Air Conditioning
To ensure proper and safe operation, the Society of Automotive Engineers (SAE J2845) recommends that the refrigerant system only be serviced by trained and certified technicians.
Never repair or replace the air conditioning evaporator (cooling coil) with one removed from a used or salvaged vehicle.
New replacement mobile air conditioning evaporators must be certified (and labeled) as meeting SAE Standard J2842.

NOTICE
Vented refrigerant is harmful to the environment. To avoid refrigerant from venting, never replace the evaporator with one removed from a used or salvaged vehicle.
Refrigerant in your vehicle’s air conditioning system is flammable and can be ignited during servicing if proper procedures are not followed.
The air conditioner label is found under the hood:
Safety Labels P. 78
Specifications P. 690

Canadian models

Dust and Pollen Filter
The climate control system is equipped with a dust and pollen filter that collects pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let you know when to replace the filter.
We recommend that you replace the dust and pollen filter sooner when using your vehicle in areas with high concentrations of dust.

If the airflow from the climate control system deteriorates noticeably, and the windows fog up easily, the filter may need to be replaced. Please contact a dealer for replacement.

Cleaning

Interior Care
Use a damp cloth with a mixture of mild detergent and warm water to remove dirt. Use a clean cloth to remove detergent residue.

Cleaning Seat Belts
Use a soft brush with a mixture of mild soap and warm water to clean the seat belts. Let the belts air dry. Wipe the openings of the seat belt anchors using a clean cloth.

Do not spill liquids inside the vehicle. Electrical devices and systems may malfunction if liquids are splashed on them.
Do not use silicone based sprays on electrical devices such as audio devices and switches. Doing so may cause the items to malfunction or cause a fire inside the vehicle.
If a silicone based spray is inadvertently used on electrical devices, consult a dealer.
Depending on their composition, chemicals and liquid aromatics may cause discoloration, wrinkles, and cracking to resin-based parts and textiles.
Do not use alkali solvents or organic solvents such as benzene or gasoline.
After using chemicals, make sure to gently wipe them away using a dry cloth.
Do not place used cloths on top of resin based parts or textiles for long periods of time without washing.

Cleaning the Window
Wipe using a glass cleaner.

Wires are mounted to the inside of the rear window. Wipe along the same direction as the wires with a soft cloth so as not to damage them.
Be careful not to spill fluids, such as water or glass cleaner, on or around the cover of both the front sensor camera and the rainfall/light sensor*.

Floor Mats
The front and second row passenger’s floor mats hook over floor anchors, which keep them from sliding forward. To remove a mat for cleaning, turn the anchor knobs to the unlock position. When reinstalling the mat after cleaning, turn the knobs to the lock position.
Do not put additional floor mats on top of the anchored mats.

Wires are mounted to the inside of the rear window. Wipe along the same direction as the wires with a soft cloth so as not to damage them.
Be careful not to spill fluids, such as water or glass cleaner, on or around the cover of both the electrical components around the rearview mirror.

If you use any floor mats that were not originally provided with your vehicle, make sure they are designed for your specific vehicle, fit correctly, and are securely anchored by the floor anchors. Position the rear seat floor mat properly. If not properly positioned, the floor mat can interfere with the front seat functions.

Maintaining Genuine Leather
To properly clean leather:

1. Use a vacuum or soft dry cloth first to remove any dirt or dust.
2. Clean the leather with a soft cloth dampened with a solution comprised of 90%water and 10% neutral soap.
3. Wipe away any soap residue with a clean damp cloth.
4. Wipe away residual water and allow leather to air dry in the shade.

It is important to clean or wipe away dirt or dust as soon as possible. Spills can soak into leather resulting in stains. Dirt or dust can cause abrasions in the leather. In addition, please note that some dark colored clothing can rub onto the leather seats resulting in discoloration or stains.

Exterior Care
Dust off the vehicle body after you drive. Regularly inspect your vehicle for scratches on painted surfaces. A scratch on a painted surface can result in body rust. If you find a scratch, promptly repair it.

Washing the Vehicle
Wash the vehicle regularly. Wash more frequently when driving in the following conditions:

• If driving on roads with road salt.
• If driving in coastal areas.
• If tar, soot, bird droppings, insects, or tree sap are stuck to painted surfaces.

Do not spray water into the air intake vents. It can cause a malfunction.

Do not spray water onto the fuel fill door directly. A high-pressure spray may cause it to open.
Do not spray water onto the capless unit when the fuel fill door is open. It can cause damage to the fuel system or engine.
If you need to lift the wiper arms away from the windshield, first set the wiper arms to the maintenance position.
Changing the Front Wiper Blade Rubber  P. 609

Using an Automated Car Wash

• Make sure to follow the instructions indicated on the automated car wash.
• Fold in the door mirrors.
• For models equipped with automatic intermittent wipers, turn the wipers off.

When using an automated car wash that pulls the vehicle through with a conveyor, make sure the transmission in (N position.
If you want to keep the transmission in (N position [car wash mode] P. 455

Using High Pressure Cleaners

• Keep sufficient distance between the cleaning nozzle and the vehicle body.
• Take particular care around the windows. Standing too close may cause water to enter the vehicle interior.
• Do not spray high pressure water directly into the engine compartment. Instead, use low pressure water and a mild detergent.
• Do not spray water directly onto the camera or the area around it. Water may enter the lens and cause the camera to malfunction.

When using an automated car wash that pulls the vehicle through with a conveyor, make sure vehicle is in car wash mode.
If you want to keep the transmission in (N
position [car wash mode] P. 455
Always wash the vehicle by hand with a mild car wash detergent and plenty of water.

Applying Wax
A good coat of automotive body wax helps protect your vehicle’s paint from the elements. Wax will wear off over time and expose your vehicle’s paint to the elements, so reapply as necessary.

NOTICE
Chemical solvents and strong cleaners can damage the paint, metal, and plastic on your vehicle. Wipe away spills immediately.

Maintaining the Bumpers and Other Resin Coated Parts
If you get gasoline, oil, engine coolant, or battery fluid on resin coated parts, they may be stained or the coating may peel. Promptly wipe it away using a soft cloth and clean water.

Cleaning the Window
Wipe using a glass cleaner.

NOTICE
Chemical solvents and strong cleaners can damage the paint, metal, and plastic on your vehicle. Wipe away spills immediately.

Ask a dealer about the correct coating material when you want to repair the painted surface of the parts made of resin.

Maintaining Aluminum Wheels
Aluminum is susceptible to deterioration caused by salt and other road contaminants. When necessary, as early as possible use a sponge and mild detergent to wipe away these contaminants. Do not use a stiff brush or harsh chemicals
(including some commercial wheel cleaners). These can damage the protective finish on aluminum alloy wheels, resulting in corrosion. Depending on the type of finish, the wheels also may lose their luster or appear burnished. To avoid water stains, wipe the wheels dry with a cloth while they are still wet.

Fogged Exterior Light Lenses
The inside lenses of exterior lights (headlights, brake lights, etc.) may fog temporarily if you have driven in the rain, or after the vehicle has been run through a car wash. Dew condensation also may build up inside the lenses when there is a significant enough difference between the ambient and inside lens temperatures (similar to vehicle windows fogging up in rainy conditions). These conditions are natural processes, not structural design problems in the exterior lights.
Lens design characteristics may result in moisture developing on the light lens frame surfaces. This also is not a malfunction.
However, if you see large amounts of water accumulation, or large water drops building up inside the lenses, have your vehicle inspected by a dealer.

Accessories and Modifications

Accessories
When installing accessories, check the following:

• Do not install accessories on the windshield. They can obstruct your view and delay your reaction to driving conditions.
• Do not install any accessories over areas marked SRS Airbag, on the sides or backs of the front seats, on front or side pillars, or near the side windows. Accessories installed in these areas may interfere with proper operation of the vehicle’s airbags or may be propelled into you or another occupant if the airbags deploy.
• Be sure electronic accessories do not overload electrical circuits or interfere with proper operation of your vehicle.
  Fuses P. 678
• Before installing any electronic accessory, have the installer contact a dealer for assistance. If possible, have a dealer inspect the final installation.
  It is recommended to use genuine Acura roof bicycle racks for carrying bicycles. Do not install load-carrying (strap-type) accessory racks to the tailgate, as they may interfere with normal operation, which may result in damage to the tailgate.

WARNING
Improper accessories or modifications can affect your vehicle’s handling, stability, and performance, and cause a crash in which you can be seriously hurt or killed.
Follow all instructions in this owner’s manual regarding accessories and modifications.

Acura Genuine accessories are recommended to ensure proper operation on your vehicle.

Modifications
Do not modify your vehicle in a manner that may affect its handling, stability, or reliability, or install non-genuine Acura parts or accessories that may have a similar effect.
Even minor modifications to vehicle systems can affect overall vehicle performance. Always make sure all equipment is properly installed and maintained, and do not make any modification to your vehicle or its systems that might cause your vehicle to no longer meet federal, state, province, territory, and local regulations.
The on-board diagnostic port (OBD-II/SAE J1962 connector) installed on this vehicle is intended to be used with automobile system diagnostic devices or with other devices that Acura has approved. Use of any other type of device may adversely affect the vehicle’s electronic systems or allow them to be compromised, possibly resulting in a system malfunction, drained battery, or other unexpected problems.
Do not modify or attempt to repair any of the electrical components.

Reference Links

View Full User Guide: ACURA RDX 2023 User Manual
Download Manuals: Acura | Owner’s Manual & Warranty | Acura Owner’s Site

2023 Acura RDX Specs, Price, Features, Mileage (Brochure)

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