Volkswagen Workshop Service and Repair Manuals

• ◆ Before carrying out repair work on the anti-locking system, determine the cause of the fault using self diagnosis.

=> Running gear - self diagnosis; Repair group 01

• ◆ Before working on the ABS, ABS/EDL system, disconnect the battery earth strap. On vehicles with coded radio, obtain coding.
• ◆ Before carrying out welding work with an electric welding unit.

=> Special information; Body No. 19

• ◆ When working with brake fluid, observe the valid, relevant safety precautions and notes => Repair group 47.
• ◆ Bleed the brake system with brake filling and bleeding unit VW 1238/1 or V.A.G 1238 B after work for which the brake system had to be opened => Repair group 47.
• ◆ During the final road test, ensure that a controlled brake test is performed at least once (pulsations must be felt at the brake pedal).
• ◆ Absolute cleanliness is required when working on the anti-locking 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, petrol, thinners or similar.
• ◆ Place removed parts on a clean surface and cover.
• ◆ After separating the control unit/hydraulic unit use the transportation protection for the valve dome.
• ◆ Carefully cover or seal open components if repairs cannot be carried out immediately.
  (Use sealing plugs repair kit 1 H0 693 311 A).
• ◆ Do not use fluffy cloths.
• ◆ Only remove replacement parts from packaging immediately prior to installation.
• ◆ Only use genuine packed parts.
• ◆ When the system is open do not work with compressed air and do not move the vehicle.
• ◆ Ensure that no brake fluid enters plug connectors.