Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus LS 500. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When checking for DTCs, make sure that the pre-collision system is turned on.
After replacing the front side radar sensor, make sure to perform ECU writing.
Refer to ECU CONFIGURATION [10/2023 - ]
If the bumper is damaged or the vehicle has a history of body repair, there is a possibility that the installation area of the front side radar sensor may be deformed and the front side radar sensor system may not operate correctly, so visually inspect the front side radar sensor installation area (frame, stud bolt) to make sure it is not dented or bent.
If the visual inspection finds a problem, check the installation condition of the front side radar sensor, and adjust the installation position of the front side radar sensor as necessary.

Refer to INSTALLATION [10/2023 - ]
After replacing the front side radar sensor, make sure to perform front side radar sensor beam axis alignment and clear all stored vehicle control history of each system.
HINT:

Front side radar sensor beam axis alignment can be performed by using "Triangle Target", "Driving Adjustment" or "ECU DATA SAVE/WRITE".

Triangle Target: Refer to TARGET ADJUSTMENT (TRIANGLE TARGET) [10/2023 - ]

Driving Adjustment: Refer to DRIVING ADJUSTMENT [10/2023 - ]

ECU DATA SAVE/WRITE: Refer to ECU DATA SAVE/WRITE [10/2023 - ]

HINT:

If a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer is used with the pre-collision system on, the front side radar sensor may store this DTC by mistake.
When mud, snow, ice, a sticker, etc. is covering the sensor or its surrounding area on the front bumper, the front side radar sensor may store this DTC by mistake.