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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Mechanical Components (Brake System) (2 Of 2) >> 46 Mechanical Components >> Rear Brakes >> Rear Brake Caliper, Removing And Installing >> Removing

Rear Brake Caliper, Removing And Installing: Removing

-- Loosen the parking brake.

-- Switch off the ignition.

NOTE:

Do not disconnect the connectors from the parking brake motors.

-- Remove the rear wheel. Refer to Wheels and Tires .

-- Carefully remove the contact -5- for the brake pad wear indicator sensor using pliers while paying attention to the clip -4-.

GWWA46-10526Courtesy of AUDI OF AMERICA, LLC
NOTE:

If the clips go missing, the brake pad wear indicator sensor wire must be replaced.

Pushing the inner brake pad slightly into the brake caliper with suitable pliers -1- makes it easier to remove the brake caliper from the brake rotor. To prevent damage to the paint coat on the brake caliper, place a piece of rubber -2- between the pliers and brake caliper.

-- Remove the brake carrier bolts -arrows-.

Fig 1: Brake Carrier Bolts
GWWA46-10506Courtesy of AUDI OF AMERICA, LLC

-- Remove the brake caliper with brake carrier and installed brake pads from the brake rotor.

NOTE:

If the brake rotor is so worn that the brake caliper cannot be removed, then the parking brake must be driven back. Refer to Removing - Drive back the parking brake motor: .

CAUTION:

Risk of damaging the brake hose, brake line and brake piston.

  • Do not let the brake caliper hang on the brake hose. Do not support the weight with the brake hose.
  • Replace the brake hose if damaged.
  • The brake line must not be bent.
  • A damaged brake line must be replaced.
  • Do not press the brake pedal when the brake caliper is removed.
  • Do not operate the parking brake when the rear brake caliper is removed.
  • A damaged brake piston must be replaced.

-- Hang the brake caliper with the brake carrier on the body using suitable wire.