Abs Repair Instructions

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

The anti-lock brake system (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.

Before performing repair work on the anti-lock brake system, determine the cause of the malfunction using On-Board Diagnostics (OBD).
When installing a new hydraulic control unit, use the Vehicle Diagnostic Tester to check the coding.
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.
When working with brake fluid, observe relevant safety precautions and notes. Refer to BRAKE FLUID GENERAL INFORMATION .
Bleed the brake system with the Brake Charger/Bleeder UnitVAS5234 for all work that requires opening the hydraulic system. High and low pressure testing should also be performed on the brake system. Refer to HIGH AND LOW PRESSURE TESTING .
During the final road test, ensure that a ABS-controlled brake test is performed at least once (pulsation must be felt at the brake pedal). Refer to the Vehicle Diagnostic Tester.
Absolute cleanliness is required when working on the anti-lock brake system. Do not 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 repairs are not performed immediately (use the repair kit plugs 1H0 698 311 A).
Only use lint-free cloths.
Only unpack replacement parts immediately prior to installation.
Only use Original Parts still in their original packaging.
If system is open, do not work with compressed air and do not move the vehicle.
Make sure brake fluid cannot get into the connector.