2024 Toyota Corolla Engine Compartment Guidelines

The 2024 Toyota Corolla features an engine compartment that exemplifies meticulous engineering and inventive design. Contained within its streamlined structure is a robust machine designed for optimal functionality, effectiveness, and dependability. The engine compartment of the 2024 Corolla is a combination of well-organized parts and advanced technology, representing Toyota’s dedication to producing high-quality vehicles.

Engine compartment

Components

• Washer fluid tank
• Engine coolant reservoir 
• Fuse boxes 
• Engine oil filler cap 
• Engine oil level dipstick 
• Battery 
• Brake fluid reservoir 
• Radiator 
• Condenser 
• Electric cooling fan

Checking the engine oil
With the engine at operating temperature and turned off, check the oil level on the dip-stick.

1. Park the vehicle on level ground. After warming up the engine and turning it off, wait about 5 minutes for the oil to drain back into the bottom of the engine.
2. Holding a rag under the end, pull the dipstick out.
   
3. Wipe the dipstick clean.
4. Reinsert the dipstick fully.
5. Holding a rag under the end,
   Low level mark
   The shape of the dipstick may differ depending on the type of vehicle or engine.
6. Wipe the dipstick and reinsert it fully.

NOTICE
To prevent serious engine damage
Check the oil level on a regular basis.

Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following situations, oil consumption may increase, and engine oil may need to be refilled in between oil maintenance intervals.

• When the engine is new, for example directly after purchasing the vehicle or after replacing the engine
  If low quality oil or oil of an inappropriate viscosity is used
• When driving at high engine speeds or with a heavy load, or when driving while accelerating or decelerating frequently
• When leaving the engine idling for a long time, or when driving frequently through heavy traffic

Engine oil level rise
If the vehicle is repeatedly driven without the engine warmed up, moisture caused by dew condensation inside the engine or fuel which did not burn mixes into the engine oil, resulting in a rise in engine oil level. However, this is not a mal-function. For example, the engine become difficult to be warmed up in the following situations.

• When driving a short distance
• When driving at a low speed
• When the outside temperature is low
  Make sure that the oil level does not exceed the refill upper limit mark and is between the low level mark and refill upper limit mark.
  Low level mark Refill upper limit mark
  The shape of the dipstick may differ depending on the type of vehicle engine.
•  Install the oil filler cap by turning it clockwise.

WARNING
Used engine oil

• Used engine oil contains potentially harmful contaminants which may cause skin disorders such as inflammation and skin cancer, so care should be taken to avoid prolonged and repeated contact. To remove used engine oil from your skin, wash thoroughly with soap and water.
• Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and filters in household trash, in sewers or onto the ground. Call your Toyota dealer, service station or auto parts store for information concerning recy-cling or disposal.
• Do not leave used engine oil within the reach of children.

Adding engine oil

Checking the oil type and preparing the item needed
Make sure to check the oil type and prepare the items needed before adding oil.

• Engine oil selection
• Oil quantity (Low level mark
• Refill upper limit mark) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
• Item
  Clean funnel

Adding engine oil
If the oil level is below or near the low level mark, add engine oil of the same type as that already in the engine.

1. Remove the oil filler cap by turning it counterclockwise.
2. Add engine oil slowly, checking the dipstick.

NOTICE
When replacing the engine oil

• Be careful not to spill engine oil on the vehicle components.
• Avoid overfilling, or the engine could be damaged.
• Check the oil level on the dip-stick every time you refill the vehicle.
• Be sure the engine oil filler cap is properly tightened.

Checking the engine cool-ant
The coolant level is satisfactory if it is between the “MAX” and “MIN” lines on the reservoir when the engine is cold.

• Reservoir
• “MAX” line
• “MIN” line

If the level is on or below the “MIN” line, add coolant up to the “MAX” line. 

Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid organic acid technology.
For the U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water. (Minimum tem-perature: -31°F [-35°C])
For Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Minimum tem-perature: -44°F [-42°C])
For more details about coolant, con-tact your Toyota dealer.

If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for leaks in the cooling sys-tem.

WARNING
When the engine is hot
Do not remove the engine coolant reservoir cap.
The cooling system may be under pressure and may spray hot cool-ant if the cap is removed, causing serious injuries, such as burns.

NOTICE
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and antifreeze must be used to provide proper lubrication, corrosion protection and cooling. Be sure to read the antifreeze or coolant label.

If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

Checking the radiator and condenser
Check the radiator and con-denser and clear away any for-eign objects. If either of the above parts is extremely dirty or you are not sure of their condi-tion, have your vehicle inspected by your Toyota dealer.

WARNING
When the engine is hot
Do not touch the radiator or con-denser as they may be hot and cause serious injuries, such as burns.

Checking and adding the brake fluid
Checking fluid level
The brake fluid level should be between the “MAX” and “MIN” lines on the tank.

Adding fluid

1. Slide and lift up the rubber strip to partly remove it as shown.
2. Disconnect the claws and remove the service cover.
3. Remove the reservoir cap.
4. Add brake fluid slowly while
   checking the fluid level.
   Make sure to check the fluid type and prepare the necessary item.

• Fluid type

FMVSS No.116 DOT 3 or SAE J1703 brake fluid
FMVSS No.116 DOT 4 or SAE J1704 brake fluid

• Item Clean funnel

Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of brak-ing efficiency. Use only newly opened brake fluid.

WARNING
When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean water immediately.
If you still experience discomfort, see a doctor.

NOTICE
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear out or when the fluid level in the accumulator is high. If the reservoir needs frequent refilling, there may be a serious problem.

Battery
Check the battery as follows.

Battery exterior
Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps.

• Terminals
• Hold-down clamp

Before recharging
When recharging, the battery pro-duces hydrogen gas which is flam mable and explosive. Therefore, observe the following precautions before recharging:

• If recharging with the battery installed on the vehicle, be sure to disconnect the ground cable.
• Make sure the charger is off when connecting and disconnecting the charger cables to the battery.

After recharging/reconnecting the battery (vehicles with a smart key system)

• Unlocking the doors using the smart key system may not be possible immediately after reconnecting the battery. If this happens, use the wireless remote control or the mechanical key to lock/unlock the doors.
• Start the engine with the engine switch in ACC. The engine may not start with the engine switch turned off. However, the engine will operate normally from the second attempt.
• The engine switch mode is recorded by the vehicle. If the battery is reconnected, the vehicle will return the engine switch mode to the status it was in before the battery was disconnected. Make sure to turn off the engine before disconnecting the battery. Take extra care when connecting the battery if the engine switch mode prior to discharge is unknown.

If the system will not start even after multiple attempts, contact your Toyota dealer.

WARNING
Chemicals in the battery
The battery contains poisonous and corrosive sulfuric acid and may produce hydrogen gas which is flammable and explosive. To reduce the risk of death or serious injury, take the following precautions while working on or near the battery:

• Do not cause sparks by touching the battery terminals with tools.
• Do not smoke or light a match near the battery.
• Avoid contact with eyes, skin and clothes.
• Never inhale or swallow electrolyte.
• Wear protective safety glasses when working near the battery.
• Keep children away from the battery.

Where to safely charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or closed room where there is insufficient ventilation.

Emergency measures regarding electrolyte

• If electrolyte gets in your eyes Flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the nearest medical facility.
• If electrolyte gets on your skin Wash the affected area thoroughly. If you feel pain or burn-ng, get medical attention immediately.
• If electrolyte gets on your clothes
  It can soak through clothing on to your skin. Immediately take off the clothing and follow the procedure above if necessary.
• If you accidentally swallow electrolyte
  Drink a large quantity of water or milk. Get emergency medical attention immediately.

When disconnecting the battery
Do not disconnect the negative (-) terminal on the body side. The disconnected negative (-) terminal may touch the positive (+) terminal, which may cause a short and result in death or serious injury.

NOTICE
When recharging the battery

Never recharge the battery while the engine is running. Also, be sure all accessories are turned off.

Adding the washer fluid

Add washer fluid in the following situations:

• A washer does not work.
• The warning message appears on the multi-information display.

WARNING
When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid contains alcohol and may catch fire if spilled on the engine, etc.

NOTICE
Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid. Doing so may cause streaking on the vehicle’s painted surfaces, as well as damaging the pump leading to problems of the washer fluid not spraying.

Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bottle.

FAQs

Useful Link

View Full PDF: 2024 Toyota Corolla Owners Manual| Auto User Guide
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