Audi Workshop Service and Repair Manuals

Renewing rear brake caliper Use new bolts → ETKA.   Note The actuator motor does not have to be removed when renewing the rear brake caliper. The new brake caliper is supplied complete with a new actuator motor. Removing Special tools and workshop equipment required t  Torque wrench -V.A.G 1331- t  Ring spanner insert -V.A.G. 1331/3- t  Brake pedal actuator -V.A.G 1869/2- t  Vehicle diagnosis and service information system -VAS 5051B- or -VAS 5052-

–  With ignition switched off, connect vehicle diagnostic, testing and information system -VAS 5051B- or -VAS 5052- to 16-pin diagnostic connector in vehicle.   Note t  Switch on ignition. t  Parking brake released t  Coding checked and rectified if necessary t  Fault memory interrogated, indicated faults eliminated and fault memory erased. –  Enter „address word 053“ for parking brake.

Display on vehicle diagnosis and service information system –  Select function „053 - Parking brake“. –  Select function „006 - Basic setting“.

Display on vehicle diagnosis and service information system t  The prompt to enter a display group appears in display zone -1-. t  Display zone -2- shows a keypad. –  Enter „7“ as „display group number“ via the keypad in display zone -2- and confirm entry with the "Q key". (resetting piston). –  Switch off ignition.

–  Insert brake pedal actuator -V.A.G 1869/2- between brake pedal and driver's seat (depress brake pedal at least 60 mm). This closes the valves in the brake master cylinder and stops the brake fluid reservoir from running empty. –  Raise the vehicle. –  Remove wheels. –  Connect the hose of a bleeder bottle to one bleeder screw of rear brake caliper. –  Open bleeder screw on rear brake caliper to release pressure from brake system. –  Close bleeder screw.   Note Do not remove brake pedal actuator -V.A.G 1869/2-. –  Unplug electrical connector for parking brake. –  Unclip brake hose and electrical wire from retainer on hub carrier. –  Remove rear brake pads → Chapter.   Note t  Mark brake pads when removing them if they are to be reinstalled. Fit in same position when installing otherwise uneven braking will be caused. t  It is recommended to apply the electronic parking brake again after driving long distances. t  The clearance between brake disc and brake pad is adjusted automatically approx. every 1000 km, unless the EPB is operated while covering this distance. –  Disconnect brake pressure line from caliper. –  Remove brake caliper from vehicle.   Note The actuator motor does not have to be removed when renewing the rear brake caliper. The new brake caliper is supplied complete with a new actuator motor. Installing Use new bolts → ETKA. –  Connect brake pressure line to caliper and tighten connection. –  Install rear brake pads → Chapter.

–  Secure brake caliper with new bolts -4-. Use torque wrench -V.A.G 1331- with ring spanner insert -V.A.G 1331/3- to tighten bolts -4-.   Note Do not attach electrical connector for parking brake until after tightening bolts. –  Plug in electrical connection for parking brake. –  Clip brake hose and electrical wire into retainer on hub carrier.   Note Make sure that brake hose is properly clipped into retainer on hub carrier and securely seated. Otherwise, there is a risk that the brake hose will not remain in the retainer.   Note After each brake pad change firmly depress brake pedal several times with vehicle stationary, so that the brake pads are properly seated in their normal operating position. –  Remove brake pedal actuator -V.A.G 1869/2-. –  Bleed brake system → Chapter. –  Fit wheels. Tightening torque for wheel bolts → Rep. gr.44 –  Lower vehicle. –  Switch on ignition.

Display on vehicle diagnosis and service information system t  The prompt to enter a display group appears in display zone -1-. t  Display zone -2- shows a keypad. –  Enter „006“ as „display group number“ via the keypad in display zone -2- and confirm entry with the „Q“ key. (Moving piston to original position). –  Press the green arrow button (bottom left) to exit from the input mask.   Note Fault memory interrogated, indicated faults eliminated and fault memory erased. –  With ignition switched off, disconnect vehicle diagnostic, testing and information system -VAS 5051B- or -VAS 5052- from 16-pin diagnostic socket in vehicle.