Rear Brake Caliper, Replacing

Rear Brake Caliper, Replacing

• Use new bolts, refer to the Parts Catalog.

• When replacing the rear brake caliper, the actuator must not be removed. The new brake caliper is delivered with a new actuator.

Removing

Special tools, testers and auxiliary items required

• Torque Wrench 5-50 Nm (V.A.G 1331)

• Box End Insert Tool (V.A.G. 1331/3)

• Brake Pedal Actuator (V.A.G 1869/2)

• Vehicle diagnostic tester (VAS 5051B) or (VAS 5052)

- Connect the vehicle diagnostic tester to the 16-pin diagnostic connector in the vehicle with the ignition switched off.






• Turn on the ignition.

• Release the parking brake.

• Coding check and reported if necessary.

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

- Select the parking brake with "address word" 53.

Displayed on the vehicle diagnostic tester display.






- Select function "053 - Parking brake".

- Select the function "006 - Basic setting".

Displayed on the vehicle diagnostic tester display.






• The request to enter a display group number appears in display field - 1 -.

• An entry keypad is shown in display field - 2 -.

- Using the entry keypad, enter in display field - 2 - the "7" for the display group number and confirm by pressing the "Q button". (Reset pistons).

- Switch off the ignition.

- Insert (V.A.G 1869/2) between the brake pedal and driver seat by pressing the brake pedal down at least 60 mm.






- Raise the vehicle.

- Remove the wheels.

- Connect the hose from a bleeder bottle to one of the bleeder screws on the rear caliper.

- Open a bleeder screw on the rear brake caliper to reduce the pressure from the brake system.

- Close the bleeder screw.

• Do not remove (V.A.G 1869/2).

- Disconnect the parking brake connector.

- Remove the brake hose and electrical wire from the bracket on the stub axle carrier

- Remove the rear brake pads, refer to => [ Rear Brake Pads ] Rear Brake Pads.

• When removing, mark brake pads that will be used again. Install in the same position, otherwise braking effect will be uneven!

• Operating the electromechanical parking brake again after a long drive is recommended.

• Brake pad play is automatically adjusted every 1000 km if the EPB is not operated in this distance.

- Remove the brake pressure line from the brake caliper.

- Remove the brake caliper from the vehicle.

• When replacing the rear brake caliper, the actuator must not be removed. The new brake caliper is delivered with a new actuator.

Installing

• Use new bolts, refer to the Parts Catalog.

- Install the brake line in the brake caliper and tighten.

- Install the rear brake pads, refer to => [ Rear Brake Pads ] Rear Brake Pads.

- Tighten the brake caliper with the new bolts - 4 -.






To tighten the bolts - 4 - use (V.A.G 1331) and (V.A.G 1331/3).

• Reconnect the parking brake connector only after tightening the bolts.

- Connect the electrical connector to the parking brake.

- Install the brake hose and electrical wire into the bracket on the stub axle carrier.

• Make sure the brake hose is correctly installed and secured inside the bracket on the stub axle carrier. So that the brake hose does not come out of the bracket on its own.

• After replacing the brake pads, press the brake pedal firmly several times while the vehicle is stationary so that the brake pads are seated properly in their normal operating position.

- Remove (V.A.G 1869/2).

- Bleed brake system, refer to => [ Brake System, Bleeding ] Service and Repair.

- Mount the wheels.

- Lower the vehicle.

- Turn on the ignition.

Displayed on the vehicle diagnostic tester display.






• The request to enter a display group number appears in display field - 1 -.

• An entry keypad is shown in display field - 2 -.

- Using the entry keypad, enter in display field - 2 - the "006" for the display group number and confirm by pressing the "Q button". (guide pistons together).

- To exit the entry template, press the green arrow button at the lower left.

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

- Disconnect the vehicle diagnostic tester from the 16-pin diagnostic connector in the vehicle with the ignition switched off.