2015 Audi S7FACTORY OEM SERVICE PROCEDURE

Hydraulic Unit With Control Module, Removing And Installing: Removing

The DTC memory must be read with the Vehicle Diagnostic Tester before removing.

-- Connect the Vehicle Diagnostic Tester to the vehicle data link connector with the ignition switched off.

NOTE:

Switch the ignition on.

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

-- Start the program "Replace steering column" in Guided Functions.

WARNING: Brake lines must not be bent.

-- Turn off the ignition.

-- Insert the Brake Pedal Actuator VAG 1869/2 between the brake pedal and driver seat. Press the brake pedal 60 mm.

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat
GWWA44-0020Courtesy of AUDI OF AMERICA, LLC

-- Raise the vehicle.

-- Connect the bleeder bottle hose to the bleeder screws on the left front and left rear brake calipers and then open the bleed screw.

NOTE: This reduces the pressure in the hydraulic unit.

-- Close the left front and left rear bleed screw.

-- Lower vehicle.

-- Do not remove the Brake Pedal Actuator VAG 1869/2.

-- Remove the coolant reservoir bolts.

-- Remove the coolant reservoir with the attached coolant hoses upward from the bracket.

NOTE: Do not open the coolant hoses.

-- Disconnect the connector from the coolant reservoir.

-- Tie to the side the coolant reservoir with attached hoses.

-- To protect against escaping brake fluid, place a lint-free rag in the area under the control module and hydraulic unit.

WARNING: When working with brake fluid, observe relevant safety precautions and notes. Refer to BRAKE FLUID .

-- Mark the brake lines.

-- Remove the brake lines from the mounts.

-- Remove all brake lines form the hydraulic unit -2-.

Fig 2: Identifying Hydraulic Unit And Control Module
GWWA45-10138Courtesy of AUDI OF AMERICA, LLC
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.