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Distinguishing features of the ABS system > < Antilock braking system (ABS)
General instructions for ABS
General instructions for ABS
The brake system of the ABS is split diagonally. The brake servo assistance is provided pneumatically by the vacuum brake servo unit.
Vehicles fitted with ABS do not have a mechanical brake pressure regulator. Specifically matched software in the control unit regulates the brake pressure distribution on the rear axle.
Problems related to the ABS affect the braking system and the amplifier. The conventional braking system remains fully functional also without ABS. One must reckon with a somewhat changed braking characteristic. The rear wheels can block quite early on after the ABS warning light lights up!
   
Arrangement of the ABS in the left-hand drive vehicle.
1 - Hydraulic unit and control unit
2 - Brake servo unit
  S45-0151
Arrangement of the ABS in the right-hand drive vehicle.
1 - Hydraulic unit and control unit
2 - Brake servo unit
  N45-10162
The hydraulic unit -2- and the control unit -1- form one component. It is only possible to separate the units in the removed condition.
The hydraulic pump -3- must not be separated from the hydraulic unit -2-.
  N45-10048

Distinguishing features of the ABS system > < Antilock braking system (ABS)