General notes

WARNING: The Anti-lock Brake System (ABS) and the Electronic Stabilization Program (ESP) system are fundamentally maintenance-free.
Checking, removing, installing and servicing may ONLY be performed by qualified personnel.

Ignoring points listed in the repair manual can cause damage to the system and greatly reduce driving safety.

NOTE:

Before carrying out repairs, determine malfunction cause using On Board Diagnostic (OBD).
See ON BOARD DIAGNOSTIC (OBD) .
Only use parts in their original packing.
Only unpack replacement parts immediately prior to installation.
Only use lint-free cloths.
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.
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.
Make sure that brake fluid does not enter harness connectors.
Bleed brake system if connections in system have been opened (e.g. using VAS 5234 brake filler and bleeder unit). See BLEEDING BRAKE SYSTEM .
When working with brake fluid, observe relevant safety precautions and notes.
Place parts that have been removed on a clean surface and cover.
Carefully cover opened components or seal, if repairs are not carried out immediately. (use sealing plugs from repair kit 1 H0 698 311 A)
Do not work with compressed air and do not move vehicle while the system is open.
When painting, electronic control module can be exposed to a maximum temperature of. 95 °C only briefly, and to a maximum of 85 °C for longer periods (approx. 2 hours).