Brake Booster

1 - Brake Booster

2 - Brake Light Switch

• To brake booster.

6 - Nut

• Always replace after removal.
• 25 Nm

8 - Brake Pedal

Special tools and workshop equipment required 

• Torque wrench V.A.G 1331
• Brake filler/bleeder unit V.A.G 1869
• Brake filler/bleeder unit suction adapter V.A.G 1869/4
• Brake filler/bleeder unit VAS 5234
• Sealing plugs repair kit, Part no. 1H0 698 311 A
• Vehicle Diagnosis, Testing and Information System VAS 505x

Removing 

-- Remove the vacuum in the brake booster by pressing the brake pedal repeatedly.

-- Depending on the engine installed, remove the noise amplifier. Refer to NOISE AMPLIFIER, TFSI .

-- Remove brake light switch. Refer to BRAKE LIGHT SWITCH .

-- Remove brake master cylinder. Refer to BRAKE MASTER CYLINDER .

-- Unclip and remove the vacuum line from the brake booster.

-- Remove driver side compartment. Refer to Removal and Installation .

-- Disconnect brake pedal from brake booster. Refer to BRAKE PEDAL AND BRAKE BOOSTER, SEPARATING .

-- Remove the nuts -6-.

-- Remove the brake booster from the vehicle.

Installing 

Installation is the reverse of removal, with special attention to the following:

-- Observe torque: 25 Nm

-- Clip brake pedal together with brake booster. Refer to BRAKE PEDAL AND BRAKE BOOSTER, SEPARATING .

-- Install brake master cylinder. Refer to BRAKE MASTER CYLINDER .

-- Install brake light switch. Refer to BRAKE LIGHT SWITCH .

-- Depending on the engine installed, install the noise amplifier. Refer to NOISE AMPLIFIER, TFSI .

-- Install driver side compartment. Refer to Removal and Installation .

-- Brake system bleeding, refer to BRAKE SYSTEM BLEEDING .

-- Initiate brake pressure sensor basic setting.

-- Perform ESP driving and system test.

Vehicle Diagnostic Tester 

-- Under chassis

-- Brake system (Repair Group 01; 45)

-- 01- On Board Diagnostic (OBD) capable systems

-- 03- Brake electronics ABS/ESP Mark 60si

-- J104- ABS/ASR/ESP Control Module, Functions

-- On vehicles with ABS/ESP, initiate brake pressure sensor basic setting.

-- Perform ESP driving and system test.