General Notes

WARNING: The Anti-lock Brake System (ABS) and the Electronic Stability Program (ESP) system are fundamentally maintenance-free.
Checking, removing, installing and servicing may ONLY be performed by qualified personnel.
Ignoring points listed in this repair information can cause damage to the system and greatly reduce driving safety.

Note: Before carrying out repairs, determine malfunction cause using 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 US1116 bleeder).
^ 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 over opened components or seal, if repairs are not carried out immediately. (use sealing plugs from repair kit 1 HO 698 311 AJ
^ 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 (approximately 2 hours).
^ Before carrying out welding work with an electric welding unit:
Refer to the appropriate Safety instructions