volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Notes for repair work on anti-lock brake system > < If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roll

Golf Mk5

  • Brake systems
  • ABS, ADR, TCS, EDL, ESP
  • General notes on anti-lock brake system

General notes on anti-lock brake system
General notes on anti-lock brake system
The ABS brake system is divided diagonally. The servo-assistance is effected pneumatically by the vacuum brake servo unit.
Vehicles with ABS are not fitted with a mechanical brake pressure regulator. Specially matched software in the control unit regulates the brake force distribution on the rear axle.
Faults in the ABS do not influence the brake system and servo assistance. The conventional brake system remains functional even without ABS. A change in braking behaviour is to be reckoned with. After the ABS warning lamp comes on, the rear wheels may lock prematurely during braking!
   
ABS layout in left-hand drive vehicle.
1 - Hydraulic unit and control unit
2 - Brake servo
  N45-0277
The hydraulic unit -2- and control unit -1- form one component. They can be separated only when removed. Hydraulic pump -3- must not be separated from hydraulic unit.
With ABS/EDL/TCS/ESP - separation is not possible in vehicles with hydraulic brake servo or hill hold assist.
  N45-10048

  • Brake systems
  • ABS, ADR, TCS, EDL, ESP
  • General notes on anti-lock brake system

Notes for repair work on anti-lock brake system > < If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roll