Rear Brake Caliper, Replacing: Removing

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Special tools and workshop equipment 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 testerVAS 5051B or VAS 5052

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

Fig 1: Connecting Diagnostic Cable VAS 5051/5A To Diagnostic Connector

Courtesy of AUDI OF AMERICA, LLC

NOTE:

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.

Fig 2: Locating Control Module Identification With Code Indicated On Display

Courtesy of AUDI OF AMERICA, LLC

-- Select function "053 - Parking brake".

-- Select the function "006 - Basic setting".

Displayed on the vehicle diagnostic tester display.

Fig 3: Identifying Diagnostic Operation System VAS 5051A (Prompt For Entering Display Group Appears In Display Zone & Input Keypad Appears In Display Zone)

Courtesy of AUDI OF AMERICA, LLC

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.

Fig 4: Identifying Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat

Courtesy of AUDI OF AMERICA, LLC

-- 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.

NOTE:

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 .

NOTE:

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.

NOTE:

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