Abs Repair Information

WARNING:

The ABS is generally maintenance-free.

Testing, assembly, and repair work may only be performed by qualified personnel.

By not observing the points described in the repair information, the system can be damaged and vehicle safety could be compromised.

WARNING: When working with brake fluid, observe relevant safety precautions and notes. Refer to BRAKE FLUID .

When installing a new hydraulic control unit, the coding must be checked using the Vehicle Diagnostic Tester.
Switch ignition off before installation work. If the radio in the vehicle is coded, find out the radio code before disconnecting the battery ground cable.
With all work that requires hydraulic system to be opened, brake system should be bled (for example with Brake Charger/Bleeder Unit VAG 1869/ or VAS 5234) → repair group 47. High and low pressure testing should also be performed on the brake system. Refer to HIGH AND LOW PRESSURE TESTING .
During final road test, make sure an ABS-controlled braking is performed at least one time (pulsing must be felt in brake pedal) using the Vehicle Diagnostic Tester.
Absolute cleanliness is required when working on the anti-lock brake system, it is not permitted to use any products which contain mineral oil, such as oils, greases etc.
Thoroughly clean all unions and the adjacent areas before loosening. Do not use aggressive cleaning agents such as brake cleaner, fuel, thinners or similar chemicals.
Place the removed parts on a clean surface and cover them.
Carefully cover or seal opened components if the repair will not be done immediately. (Sealing plugs, use repair kit 1 H0 698 311 A)
Only use lint-free cloths.
Only unpack replacement parts immediately prior to installation.
Only use parts in their original packaging.
If system is open, do not work with compressed air and do not move the vehicle.
Make sure that brake fluid does not enter harness connectors.