Brake Booster Vacuum Sensor: Service and Repair

Brake Booster Vacuum Sensor, with Optimized Hydraulic Brake Vacuum (OHBV) Boosting

• If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to => [ Noise Amplifier, TFSI ] Service and Repair.

• The noise amplifier is inside the engine compartment in front of the brake booster.

• Vehicles that draw the vacuum for the brakes from the intake manifold and vehicles with mechanical vacuum pumps do not have a Brake Booster Vacuum Sensor (G483).

Special tools, testers and auxiliary items required

• Vehicle diagnostic, testing and information system (VAS 5051)

• The brake booster vacuum sensor does not require calibration after replacing.

• The electrical test is described in Guided Fault Finding.

Removing

• If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to => [ Noise Amplifier, TFSI ] Service and Repair.

• The noise amplifier is inside the engine compartment in front of the brake booster.

- Disconnect electrical connector - 1 - on vacuum sensor - 2 -.






- Pull back OHBV circlip - 1 - and remove sensor - 2 - from brake booster.






Installing

• If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to => [ Noise Amplifier, TFSI ] Service and Repair.

• The noise amplifier is inside the engine compartment in front of the brake booster.

Installation is performed in the reverse sequence.