Lexus ES350 2022 Rear Cross Traffic Alert User Manual
Produced by the Japanese carmaker Lexus, a branch of Toyota, the Lexus ES350 is a high-end sedan. The ES350 is renowned for its sophisticated styling, plush interior, and cutting-edge safety systems. Lexus Rear Cross Traffic Alert (RCTA), a major safety feature included in the 2022 model, is one such feature. A device called Rear Cross Traffic Alert is intended to increase the safety of the car when reversing out of a driveway or parking place. It makes use of sensors, often found in the rear bumper or side mirrors, to find oncoming cars or other objects that the driver would find challenging to see. The device warns the driver both visually and audibly when it senses a car coming from the side.
The Lexus ES350 2022 comes with a number of other cutting-edge safety systems in addition to Rear Cross Traffic Alert, including Forward Collision Warning, Automatic Emergency Braking, Lane Departure Warning, Adaptive Cruise Control, and Blind-Spot Monitoring. Together, these components offer a complete safety solution that puts the health of the driver and passengers first. Lexus ES350 2022’s inclusion of Rear Cross Traffic Alert adds a significant safety feature to an already outstanding lineup, enhancing the car’s standing as a dependable and secure luxury sedan option.
2023 Lexus ES Specs, Price, Features, Mileage and Review
Rear Cross Traffic Alert
The RCTA function uses the BSM rear side radar sensors installed on the inner side of the rear bumper. This function is intended to assist the driver in checking areas that are not easily visible when backing up.
WARNING
Cautions regarding the use of the system
There is a limit to the degree of recognition accuracy and control performance that this system can provide, do not overly rely on this system. The driver is always responsible for paying attention to the vehicle’s surroundings and driving safely.
To ensure the system can operate properly
System Components
- A Meter control switches Turn the RCTA function on/off. When the RCTA function is disabled, the RCTA OFF indicator illuminates.
- Outside rear view mirror indicators When a vehicle approaching from the right or left at the rear of the vehicle is detected, both outside rear view mirror indicators will flash.
- Center Display
If a vehicle approaching from the right or left at the rear of the vehicle is detected, the RCTA icon for the detected side will be displayed on the Center Display. This illustration shows an example of a vehicle approaching from both sides of the vehicle.
RCTA buzzer
If a vehicle approaching from the right or left at the rear of the vehicle is detected, a buzzer will sound.
Turning the RCTA function on/off
Use the meter control switches to enable/disable the RCTA function.
Vehicles without the Intuitive parking assist
- Press
or to select . - Press
or to select “RCTA” and then press “OK”.
Press
or to select “RCTA” and then press “OK”. - Vehicles with the Intuitive parking assist
- Press
- or to select .
- Press or to select “PKSA” and then press “OK”.
- Press
- or to select “RCTA” and then press “OK”.
When the RCTA function is disabled, the RCTA OFF indicator illuminates on the multi-information display. (Each time the engine switch is turned off then changed to IGNITION ON mode, the RCTA function will be enabled automatically.)
NOTICE
Before using the RCTA function
Do not place obstacles near the sensors.
Outside rearview mirror indicator visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to see.
Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system volume is high.
When “Rear Cross Traffic Alert Unavailable” is shown on the multi-information display
Ice, snow, mud, etc., may be attached to the rear bumper around the sensors Remove the ice, snow, mud, etc., attached to the rear bumper around the sensors to return the function to normal. Additionally, the sensors may not operate normally when driving in extremely hot or cold environments.
Rear Side Radar Sensors
2023 Lexus ES Specs, Price, Features, Mileage and Review
RCTA Function
Operation of the RCTA Function
The RCTA function uses rear-side radar sensors to detect vehicles approaching from the right or left at the rear of the vehicle and alerts the driver of the presence of such vehicles by flashing the outside rear-view mirror indicators and sounding a buzzer.
- Approaching vehicles
- Detection areas of approaching vehicles
RCTA Icon Display
When a vehicle approaching from the right or left at the rear of the vehicle is detected, the following will be dis-played on the Center Display. Example: Vehicles are approaching from both sides of the vehicle.
RCTA Function Detection Areas
The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example:
| Approaching Vehicle Speed | Approximate Alert Distance |
| 18 mph (28 km/h) (fast) | 65 ft. (20 m) |
| 5 mph (8 km/h) (slow) | 18 ft. (5.5 m) |
The RCTA function is operational when
The RCTA function operates when all of the following conditions are met:
- The engine switch is in IGNITION ON mode.
- The RCTA function is on.
- The shift lever is in R.
- The vehicle speed is less than approximately 5 mph (8 km/h).
- The approaching vehicle speed is between approximately 5 mph (8 km/h) and 18 mph (28 km/h).
Setting the buzzer volume
The buzzer volume can be adjusted on the multi-information display. Use the meter control switches to change settings.
Vehicles without the Intuitive parking assist
- Press or to select .
- Press to select “RCTA”, then press “OK”.
- Press to select and then press “OK”.
Each time the switch is pressed, the volume level will change between 1, 2 and 3.
- Vehicles with the Intuitive parking assist
- Muting a buzzer temporarily
Vehicles without the Intuitive parking assist A mute button will be displayed on the multi-information display when an object is detected. To mute the buzzer, press “OK”.
- When the shift lever is changed.
- When the vehicle speed exceeds a certain speed.
- When the operating function is temporarily canceled.
- When the operating function is disabled manually.
- When the engine switch is turned off.
- Vehicles with the Intuitive parking assist
Conditions Under which the System will not Detect a Vehicle
The RCTA function is not designed to detect the following types of vehicles and/or objects:
- Vehicles approaching from directly behind
- Vehicles backing up in a parking space next to your vehicle
- Vehicles that the sensors cannot detect due to obstructions
- Guardrails, walls, signs, parked vehicles and similar stationary objects*
- Small motorcycles, bicycles, pedestrians, etc.*
- Vehicles moving away from your vehicle
- Vehicles approaching from the parking spaces next to your vehicle*
- The distance between the sensor and approaching vehicle gets too close. Depending on the conditions, detection of a vehicle and/or object may occur.
Situations in which the System may not Operate Properly
Situations in which the system may not operate properly
- When the sensor is misaligned due to a strong impact to the sensor or its surrounding area.
- When mud, snow, ice, a sticker, etc., is covering the sensor or surrounding area on the rear bumper.
When driving on a road surface that is wet with standing water during bad weather, such as heavy rain, snow, or fog. - When multiple vehicles are approaching with only a small gap between each vehicle.
- When a vehicle is approaching at high speed.
- When equipment that may obstruct a sensor is installed, such as a towing eye-let, bumper protector (an additional trim strip, etc.), bicycle carrier, or snow plow.
- When backing up on a slope with a sharp change in grade.
- When backing out of a sharp angle parking spot.
- When towing a trailer.
- When there is a significant difference in height between your vehicle and the vehicle that enters the detection area.
- When a sensor or the area around a sensor is extremely hot or cold.
- If the suspension has been modified or tires of a size other than specified are installed.
- If the front of the vehicle is raised or lowered due to the carried load.
- When turning while backing up.
When a vehicle turns into the detection area.
Situations in which the system may operate even if there is no possibility of a collision
Instances of the RCTA function unnecessarily detecting a vehicle and/or object may increase in the following situations:
- When the parking space faces a street and vehicles are being driven on the street.
- When the distance between your vehicle and metal objects, such as a guardrail, wall, sign, or parked vehicle, which may reflect electrical waves toward the rear of the vehicle, is short.
- When equipment that may obstruct a sensor is installed, such as a towing eye-let, bumper protector (an additional trim strip, etc.), bicycle carrier, or snow plow.
- When a vehicle passes by the side of your vehicle.
- When a detected vehicle turns while approaching the vehicle.
- When there are spinning objects near your vehicle such as the fan of an air conditioning unit.
- When water is splashed or sprayed toward the rear bumper, such as from a sprinkler.
- Moving objects (flags, exhaust fumes, large rain droplets or snowflakes, rain water on the road surface, etc.).
- When the distance between your vehicle and a guardrail, wall, etc., that enters the detection area is short.
- Gratings and gutters.
- When a sensor or the area around a sensor is extremely hot or cold.
- If the suspension has been modified or tires of a size other than specified are installed.
If the front of the vehicle is raised or lowered due to the carried load.
FAQs
What is Rear Cross Traffic Alert (RCTA)?
When backing out of a driveway or parking space, the Lexus ES350 2022’s Rear Cross Traffic Alert (RCTA) safety feature aids the driver in spotting oncoming traffic. It monitors the sides of the car with sensors and radar technology and warns the driver if another car is seen.
How does Lexus Rear Cross Traffic Alert work?
The RCTA system uses radar sensors to scan the area behind the vehicle while it is in reverse gear. It will give the driver a visual and/or audible warning if it notices a car coming from the side. This aids the driver in backing out safely and preventing potential collisions.
Can Rear Cross Traffic Alert detect pedestrians or objects other than vehicles?
The main purpose of Rear Cross Traffic Alert is to identify approaching vehicles. While it might be able to spot some large objects, it might struggle to reliably spot pedestrians or smaller obstacles. When using this system, it’s crucial for drivers to use caution and keep an eye out for pedestrians and other objects.
What is the range of the Rear Cross Traffic Alert system?
Depending on the specific vehicle model and configuration, the Rear Cross Traffic Alert system’s range may differ. It usually extends several meters behind the vehicle in general.
Does Rear Cross Traffic Alert work at all speeds?
When backing out of driveways or parking spaces, for example, the functionality of Rear Cross Traffic Alert is typically optimized. At faster speeds, the system might not be as efficient.
Can Rear Cross Traffic Alert be turned off?
Rear Cross Traffic Alert can typically be enabled or disabled through the settings of the car or the infotainment system. For detailed instructions on how to activate or deactivate this feature, consult the owner’s manual for your vehicle.
Does Rear Cross Traffic Alert replace the need to look over my shoulder when reversing?
No, rear cross traffic alert is designed to help the driver by giving them an extra warning of oncoming traffic. It does not, however, take the place of the driver’s visual inspection of their surroundings, which still requires them to look over their shoulder or to use the side and rearview mirrors.
Can Rear Cross Traffic Alert prevent all collisions?
Although Rear Cross Traffic Alert can greatly lower the risk of collisions, it cannot ensure that all accidents will be avoided. To ensure safe maneuvering, the driver must still use caution, their mirrors, and look for approaching vehicles.
Does Rear Cross Traffic Alert work in all weather conditions?
Rain and fog are both acceptable operating environments for Rear Cross Traffic Alert. Extreme weather, though, like a lot of snow or a lot of fog, can have an impact on how well the system works. In difficult weather conditions, it’s crucial to use caution and rely on your own observations.
Can Rear Cross Traffic Alert be retrofitted to older Lexus ES350 models?
It might not be possible or might require significant modifications to retrofit Rear Cross Traffic Alert to older vehicle models. To find out if such retrofits are offered and suitable for your particular vehicle, it is best to speak with an authorized Lexus dealership or service center.
Is Rear Cross Traffic Alert standard on the Lexus ES350 2022?
Depending on the Lexus ES350 2022’s trim level and optional packages, Rear Cross Traffic Alert might not be available. It is advised to check the car’s specifications or speak with a Lexus dealer to make sure it is included in the desired setup.
Are there any limitations or considerations to keep in mind when using Rear Cross Traffic Alert?
Although Rear Cross Traffic Alert is an important safety feature, there are a few restrictions to be aware of. When a vehicle is moving quickly or is too far away, the system might not be able to detect it. It’s crucial to use the system as a tool rather than relying solely on it. When reversing, always keep an eye on your surroundings and use your mirrors to ensure a safe manoeuvre.
what is RCTA on Lexus?
RCTA stands for “Rear Cross-Traffic Alert” in Lexus vehicles. It’s a safety feature that uses sensors to detect approaching vehicles from the sides when you’re reversing, providing warnings to help you avoid potential collisions while backing up.
Useful Link
View Full User Guide: Lexus ES350 2022 User Manual | Auto User Guide
Download Manuals: Resources | Manuals & Guides | My Lexus