See also:

Operation and Maintenance
GENERAL INFORMATION You are responsible for ensuring that your Lexus is operated and maintained according to the instructions in the Owner’s Manual and the “Maintenance Information” section ...

Vehicle exterior
CAUTION  - If the engine is running Turn off the engine and ensure that there is adequate ventilation before performing maintenance checks. ...

Radar sensor
The radar sensor detects vehicles or other obstacles on or near the road ahead and determines whether a collision is imminent based on the position, speed, and heading of the obstacles. ...