BMW X3 Owners Manual: The concept
Two radar sensors below the rear bumper monitor the area behind and next to the vehicle at speeds above approx. 30 mph/50 km/h.
The system indicates whether there are vehicles in the blind spot, arrow 1, or approaching from behind on the adjacent lane, arrow 2.
The lamp in the exterior mirror housing is dimmed.
Before you change lanes after setting the turn signal, the system issues a warning in the situations described above.
The lamp in the exterior mirror housing flashes and the steering wheel vibrates.
Hints
Personal responsibility
The system does not serve as a substitute for the driver's personal judgment of the traffic situation.
Be aware of the traffic situation and the vehicle's surroundings at all times, otherwise accidents are still possible despite all warnings.
At a glance
Button in the vehicle
Intelligent Safety button
Radar sensors
The radar sensors are located under the rear
bumper. ...
Other materials:
BMW X3 Service & Repair Manual > Electronic switching or control units: Removing/replacing knock sensors (N55)
Necessary preliminary tasks:
Read out the fault memory of the DME control unit.
Switch off ignition.
Remove INTAKE PLENUM .
Vehicles with the Bosch high pressure pump only :
Remove HIGH PRESSURE PUMP .
Unlock connector (1) and remove.
Feed out connector (1) behind feed line, remove ...