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

NOTE:

If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to NOISE AMPLIFIER, TFSI .
The noise amplifier is inside the engine compartment in front of the brake booster.

NOTE:

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 and workshop equipment required

Vehicle diagnostic, testing and information System VAS 5051

NOTE:

The brake booster vacuum sensor does not require calibration after replacing.
The electrical test is described in Guided Fault Finding.

Removing

NOTE:

If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to NOISE AMPLIFIER, TFSI .
The noise amplifier is inside the engine compartment in front of the brake booster.

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

Fig 1: Identifying Brake Booster Vacuum Sensor G483 Harness Connector

Courtesy of AUDI OF AMERICA, LLC

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

Fig 2: Identifying Brake Booster Vacuum Sensor G483 And Securing Ring

Courtesy of AUDI OF AMERICA, LLC

Installing

NOTE:

If the vehicle has a TFSI engine, then the noise amplifier must be removed and installed. Refer to NOISE AMPLIFIER, TFSI .
The noise amplifier is inside the engine compartment in front of the brake booster.

Installation is performed in the reverse sequence.