Rear Brake Caliper: Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Audi S4, 2013 Audi A4, 2012 Audi S4, 2012 Audi A4, and 2011 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Torque Wrench 5-50Nm VAG 1331
Box End Insert Tool VAG 1331/3
Brake Pedal Actuator VAG 1869/2
Vehicle Diagnostic Tester

-- 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:

Switch on the ignition.

Parking brake released

Coding check and reported if necessary.

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

-- Select function "053 - Parking brake".

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

Display on vehicle diagnostic tester:

Fig 2: Display On Vehicle Diagnostic Tester

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 "007" for the display group number and confirm by pressing the "Q button". (Reset pistons).

-- Press the green arrow button at the bottom on the left side to exit the entry template.

-- Switch off the ignition.

-- -Insert the brake pedal actuator VAG 1869/2 between the brake pedal and driver seat by pressing the brake pedal down at least 60 mm. By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.

Fig 3: 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 brake pedal loading device VAG 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.