Parking Brake
WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This test may set ABS and ASC warning lights on the instrument cluster. Lights are illuminated because the system sees an implausible speed differential between spinning rear wheels, and stationary front wheels. Vehicles equipped with Dynamic Stability Control (DSC3) will not set lights.
Parking brake must be tested on roller dynamometer as follows:
- With parking brake released wheel circumferential force is no more than 300 N.
- At first tooth, do not allow braking force to increase.
- At 2nd tooth, braking action can begin and indicator light may be lit.
- At 3rd tooth, braking action must begin and indicator light must be lit.
- At 4th tooth, braking action increases.
- At 5th tooth, wheel circumferential force must be at least 1100 N at one of the two rear wheels, and at least 1000 N at the other wheel. Wheel circumferential force differential (left to right) maximum 30 percent from highest value (shortly before wheel lockup). A readjustment must be carried out in event of larger deviations of wheel circumferential force. See PARKING BRAKE under ADJUSTMENTS.
- Braking with locked wheels must be possible with parking brake.
- The ABS/ASC warning lights, if on, will automatically switch off by switching off engine, waiting at least 30 seconds, restart engine and drive away. Warning lights will go out when speed exceeds 8 MPH. (Fault codes will be retained in memory.)