Refer to how to proceed with troubleshooting .

This system uses ultrasonic sensors to detect any obstacles at the corners and the rear of the vehicle. The system then informs the driver of the distance between the sensors and the obstacles as well as their positions by indicating them on the multi-display or multi-information display and by sounding a buzzer.

Lexus IS250 IS220d GSE20 ALE20 PARK ASSIST / MONITORING

Lexus IS250 IS220d GSE20 ALE20 PARK ASSIST / MONITORING

Under the following conditions, the detection function may not function properly:

Install the navigation antenna with the 2 screws.

Turn the shift lever knob counterclockwise and remove the shift lever knob sub-assembly.

Lexus IS250 IS220d GSE20 ALE20 NAVIGATION

Install the navigation ECU with the 4 bolts.

Turn the engine switch on (ACC).