Electromechanical Parking Brake Actuator

Electromechanical Parking Brake Actuator

Special tools, testers and auxiliary items required

• Torque wrench (V.A.G 1331/)

• Vehicle Diagnosis, Testing and Information System (VAS 505x)

Removing

• Ignition on.

• Release the parking brake.

• Coding check and reported if necessary.

• DTC memory interrogated, errors shown corrected and DTC memory erased.

• Ignition off

- Set vehicle to vehicle lift mode.

- Raise vehicle.

- Remove wheels.

• Ignition must be switched off for at least 30 seconds when disconnecting connector!

• Clean entire area around connector and actuator/brake caliper.





- Press retainer on top side of connector (vehicle side) down (magnified area) and disconnect actuator connector.

- Remove connector (actuator side) from bracket.





- Remove both actuator securing bolts.





- Remove actuator.





- Remove sealing ring with a suitable tool.





• Make sure that ring groove of the seal and contact surface of parking brake actuator do not become damaged.

• Do not use any tools with sharp edges.

- Clean ring groove and contact surfaces if dirty. Only use brake cleaner.

Installing

- Install new seal.





- Pull brake caliper adjusting screw back a bit to make it easier to install actuator.

• This makes it easier to install the actuator.

- Item - 1 - Position actuator as shown.





• Make sure that seal is seated correctly

- Item - 2 - Then rotate actuator so bolt hole - a - and threads in brake caliper housing - b - are brought into alignment.

Make sure that parking brake actuator is seated flush against the brake housing.





- Install both screws on the actuator. Tightening specification: 12 Nm.


Position bolts by hand and screw in a few turns. If threads are damaged, entire brake caliper must be replaced!

- Slide actuator connector into bracket.





• Only insert connector by hand to avoid damaging it.

- Connect connector (vehicle side).

- Install wheels.

After replacing actuator, basic setting 10 must be performed with the (VAS 505x) in the EPB function.

Use (VAS 505x) for this.

- Select basic section 10 under "Function". Refer to => [ VAS 505x, Connecting and Selecting Functions ] VAS 505x, Connecting and Selecting Functions or

- Under chassis (Rep. Gr. 01:34-65)

- Brake system (Rep. Gr. 01:45-46)

- 01- On Board Diagnostic (OBD) capable systems

- 53 - Parking brake

- J540 - Electromechanical Parking Brake Control Module

- J540 - Basic setting (3 Electromechanical parking brake function test)


Make sure the brakes are working correctly before driving the vehicle for the first time.