Antilock Brakes / Traction Control Systems: Service Precautions

Anti-lock Brake System (ABS), Bosch 5.3
A traction control system (TCS/ASR) is available as optional equipment for front-wheel-drive models.
The brake system of the ABS is split diagonally. The brake servo assistance is provided pneumatically by a vacuum brake servo unit.





Hydraulic unit -a- and ABS control module -b- form a single unit. The combination of these two components is termed the hydraulic control unit.
Sources of malfunctions are reduced as a result of the direct link between the two components.

CAUTION:
- It is not possible to repair the hydraulic control unit. If faulty, it should be replaced
- The bolts which connect the individual components of the hydraulic control unit must not be loosened.