General Information

ABS System, General Information

The new Audi A6 is equipped with the Bosch 5.3 ABS/EDL system as standard equipment. A traction control system (ASR) may also be installed as optional equipment on vehicles with front-wheel drive.
The ABS hydraulic system is divided diagonally (two circuits). The vacuum brake servo unit boosts the brakes pneumatically.





Hydraulic unit -a- and control module -b- are combined as a single unit which is referred to as the hydraulic control unit. The direct connection between these components reduces possible sources of malfunctions. The hydraulic control unit is not serviceable and must be replaced if necessary.
Do not remove the bolts connecting the individual components of the hydraulic control unit.