Parking ultrasonic sensor

In front and rear bumpers on equipped cars.

Short sound pulses and returning echoes estimate nearby distances within the system’s limits.

An echo finder around the bumper.

False warnings can involve dirt, paint damage, moisture, wiring or a sensor.

Inspect and service using model-specific guidance, especially after a collision; warning lights require diagnosis.

Calibration, matched modules and post-collision work may dominate cost. An illuminated warning does not identify a replaceable part.

BMW safety systems according to market, model year and option package.