Fault situations

A prerequisite for the function of the ACC is that the engine/transmission control unit and the DSC are operating without faults. For this reason, there is a continuous check as to whether the acceleration or braking requests are carried out without faults. In the event of a fault, the ACC is switched off.

Heavy dirt contamination of the ACC sensor can mean that the function cannot be activated or the ACC is deactivated.

The ACC sensor must be adjusted horizontally and vertically in the installation position so that objects can be picked up without faults. This ACC sensor setting must be made on a special setting bay using special tools approved by BMW.

The service function "Set ACC sensor" is available for the setting.

A poorly adjusted ACC sensor is detected. A fault is stored in the ACC fault memory. The ACC cannot be activated until the sensor is correctly set.