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Home >> Audi >> 2009 >> S4 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake System >> 45 - Anti-lock brake system >> Anti-lock brake system (ABS) Bosch 5.7 >> Anti-lock brake system (ABS) Bosch 5.7

Anti-lock brake system (ABS) Bosch 5.7

Anti-Slip Regulation (ASR) is offered as optional equipment on front wheel drive vehicles.

The ABS brake system is divided diagonally. The brake booster assist is provided pneumatically by the vacuum brake booster unit.

Fig 1: Anti-Lock Brake System (ABS) Bosch 5.7
GW00019674Courtesy of VOLKSWAGEN UNITED STATES, INC.

The hydraulic unit and control module form a single unit, which is referred to as the hydraulic control unit.

Malfunction sources are reduced by direct connection of components named. Hydraulic control module is serviced by replacing it.

The bolts which connect the individual components of the hydraulic control unit must not be loosened.