What changes
The rear caliper motors retract the pistons so the calipers can be removed and the pads replaced. Workshop only.
Details
Service mode of the electromechanical parking brake: routine 03A1 in the ABS unit. Afterwards the pistons are retracted and the brake does not work — the car must not be moved. After replacing the pads, run “close after pad replacement” and then “test”.
Before you start
Takes about 1 min.
- Car on a lift or secure stands, front wheels chocked
- Ignition on, engine off
- Parking brake released
- Pedals not pressed, nobody near the rear wheels