Overview - Parking Brake
1 - Bolt
2 - Parking Brake Motor
3 - Electromechanical Parking Brake Control Module -J540-
4 - -AUTO HOLD- Button -E540-
5 - Electromechanical Parking Brake Button -E538-
6 - Instrument Cluster
7 - Nut
8 - Rear Brake Caliper
9 - Seal
Electromechanical Parking Brake Control Module -J540-, Removing and Installing
The Transverse Acceleration Sensor -G200-, the Rotation Rate Sensor -G202- and the Longitudinal Acceleration Sensor -G251- are also integrated in the Electromechanical Parking Brake Control Module -J540- housing.
Note
If the control module is replaced, select the "Replace" function in "Guided Functions" on the control module, refer to Vehicle Diagnostic Tester.
Removing
- Remove the center console, refer to → Body Interior; Rep. Gr.68; Center Console; Center Console, Removing and Installing.
- If installed: Remove the rear air guide channel, refer to → Heating, Ventilation and Air Conditioning; Rep. Gr.87; Air Routing; Air Distribution Channels, Removing and Installing.
- Disconnect the connector -1-.
- Remove the nuts -arrows- and then remove the Electromechanical Parking Brake Control Module -J540-.
Installing
Install in reverse order of removal. Note the following:
Caution
If the Electromechanical Parking Brake Control Module -J540- has fallen onto a hard surface or shows any signs of damage, it must not be installed.
- Make sure it is seated without tension on the bracket.
- Install the rear air guide channel, refer to → Heating, Ventilation and Air Conditioning; Rep. Gr.87; Air Routing; Air Distribution Channels, Removing and Installing.
- Install the center console, refer to → Body Interior; Rep. Gr.68; Center Console; Center Console, Removing and Installing.
Left/Right Parking Brake Motor -V282-/-V283-, Removing and Installing
Special tools and workshop equipment required
Removing
- Release the parking brake.
- Turn off the ignition.
Note
Ignition must be switched off for at least 30 seconds before disconnecting the connector.
- Disconnect the connector -1- from the parking brake motor.
- Remove the bolts -arrows- for the parking brake motor.
- Remove the parking brake motor from the brake caliper.
- Remove the seal.
- Clean the parking brake motor ring groove and contact surface.
Installing
Install in reverse order of removal. Note the following:
- Lightly coat the new seal with brake fluid and install it.
- Using an 8 mm internal multi-point socket -A-, turn the spindle back a little until the parking brake motor can be positioned correctly.
Caution
Do not remove the gasket when assembling the parking brake motor.
- Rotate the parking brake motor until the bolt hole and threads are aligned.
- Connect the Vehicle Diagnostic Tester to the vehicle Data Link Connector (DLC) with the ignition switched off -arrow-.
- Turn on the ignition.
- After entering the VIN, select Guided Functions.
- Basic Setting, Performing
- Continue to follow the instructions in the Vehicle Diagnostic Tester display.