Using Brake Test Stands
| IMPORTANT | Switch off the Hill Descent Control (HDC) before operating the brake test stand and do not switch it on again. |
The HDC indicator lamp must not be illuminated! It is possible that the HDC indicator lamp will go out or will not light up, even if the HDC mode has been activated. One possible reason for this is that the HDC is temporarily unavailable because of a high brake temperature.
Cars With xDrive And Automatic Transmission
| IMPORTANT | Only check the brakes when the select position is "N" (Neutral) and do not accelerate when the rollers start up. |
This keeps the multi-plate clutch separated in the transfer case and the car cannot be driven out of the brake test stand.
Cars With xDrive And Manual Transmission
| IMPORTANT | Do not engage a gear and do not accelerate on the brake test stand. |
Applying throttle leads to the multi-plate clutch closing in the transfer case, even in if a gear is not engaged. As a result, the stationary axle is also activated, and the car is pushed out of the brake test stand.