Brake Pedal And Brake Booster, Disconnecting And Connecting

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Release Tool for Brake Light Switch T40168A
Brake Servo Release Tool T40136

Disconnect the brake pedal from the brake booster.

WARNING: If possible, leave the brake pedal stop installed; it could break the mount for the Brake Lamp Switch -F- if the brake pedal is released too quickly.

-- Move the seat all the way back as far as it will go.

-- Turn off the ignition.

-- Remove the footwell vent.

-- Disconnect the connector to the Brake Lamp Switch -F-.

-- Remove the Brake Lamp Switch -F-. Refer to Brake Lamp Switch -F-, REMOVING AND INSTALLING .

1 -

Brake Pedal

2 -

Pressure rod

3 -

Retaining tabs.

-- First move the brake pedal toward the brake booster and the hold it in this position.

Fig 1: Identifying Retaining Device T40136

Courtesy of AUDI OF AMERICA, LLC

-- Insert the Brake Servo Release Tool T40136 and pull in the direction of the driver seat as shown. When doing this, counter-hold at the brake pedal (the pedal must not be allowed to move backward at this time). The mounting retaining lugs -3- will thereby be pressed off the ball head of the push rod -2-.

The process of separating the brake pedal from the brake booster is shown with the pedal assembly removed.

-- Pull the Brake Servo Release Tool T40136 and brake pedal together toward the driver seat. (This will pull the brake pedal off the push rod ball head).

NOTE: If possible, leave the brake pedal stop installed; it could break the mount for the Brake Lamp Switch -F- if the brake pedal is released too quickly.

Connect the brake pedal to the brake booster.

-- Hold the ball head of push rod in front of the mount and push the brake pedal in direction of brake booster, so the ball head locates audibly.

Fig 2: Brake Pedal, Joining To Brake Booster

Courtesy of AUDI OF AMERICA, LLC

-- Install the Brake Lamp Switch -F-. Refer to Brake Lamp Switch -F-, REMOVING AND INSTALLING .

-- Install the footwell vent.

-- Install the storage compartment under the instrument panel on the driver side. Refer to Interior Equipment .

Check the function of the Brake Lamp Switch -F- after installing it and before driving the vehicle.

CAUTION: Make sure the brakes are working correctly before driving the vehicle.