ABS Mark 60, ABS, EDL, ASR and ESP, From 06.08

Control Module and Hydraulic Unit

Sealing Plug Repair Set, Part No. 1H0 698 311 A





1 Transport protection for valve domes (foam)
2 Sealing plug M10
3 Sealing plug M12

After separating the control module from the hydraulic unit, always install the transport protection - 1 - on the hydraulic unit for the valve domes.

Warranties will not be granted for hydraulic units without transport protection.

Component Location

The control module is bolted to the hydraulic unit and is located on the right side in the engine compartment.

Removing

CAUTION!
Do not bend the brake lines near the hydraulic unit.

- Read and note the present control module coding.

- Note or request radio code on vehicles with a coded radio, if necessary.

- Disconnect the battery.

- Remove the engine cover.

- If equipped, remove the heat shield.

- Release the control module connector in - direction of arrow 1 - and pull off in - direction of arrow 2 -.





- Install the brake pedal actuator (VAG 1869/2).

- Attach the bleeder hose of the bleeder bottles to the left front and left rear brake caliper bleeder valves and open the bleeder valves.

- Press the brake pedal at least 60 mm using the brake pedal actuator (VAG 1869/2).

- Close the left front and left rear bleeder valves.

- Do not remove the brake pedal actuator (VAG 1869/2 ).

- Place sufficient lint free cloths under the control module and hydraulic unit.

Make sure that brake fluid does not come in contact with the electrical terminals.

- First, mark both brake lines - A and B - from the master cylinder and remove them from the hydraulic unit.





- Plug the brake lines and threaded holes immediately with sealing plugs from the repair kit part no. 1H0 698 311 A.

- Mark the brake lines - 1 to 4 - (from the brake caliper), and remove them from the hydraulic unit.

- Remove the bolt from the bracket.

- Remove the hydraulic unit, the control module and the retainer from the bracket rubber insulator and turn it on its head.

- Remove the retainer from the hydraulic unit in the engine compartment.

- Remove the hydraulic unit and the control module.

Removing Control Module from Hydraulic Unit

- Set the hydraulic unit with control module upward on to a clean, level surface.

- Remove the inner Torx bolt from the control module.

- Pull the control module off from the hydraulic unit in - direction of arrow - without tilting.





- Carefully pull off all sealing rings from the valve domes of the hydraulic unit.

CAUTION!
• On a disconnected control module, circuit board is laid open.

• No moisture or particles of dirt must penetrate in interior of control module.

• Avoid buildup of static electricity!

- Cover control module magnetic coils with a lint free cloth.

After separating the control module and hydraulic unit, use the transport protection for valve body.

Installing New Control Module

CAUTION!
Excessive shaking (e.g. dropping, impact) may destroy the control module. Control module must then no longer be used.

• Surface must be cleaned before assembling.

- Slide all the sealing rings - A - on slightly over the valve domes.





- Place the control module without tilting it onto hydraulic unit.

Sealing rings are then brought into their end position.

- Install the hydraulic unit and control module with the new inner Torx bolts diagonally according to the tightening specification.

• A new control module may be installed a max. of two times to a used hydraulic unit, to ensure that the elastic gasket seals sufficiently.

• A control module which was once in driving operation must not be installed a second time.

Installing Control Module and Hydraulic Unit

• Do not remove the sealing plugs from the new hydraulic unit until the corresponding brake line is about to be installed.

• If the sealing plugs are removed too early, brake fluid can escape. If this occurs, unit may not be sufficiently filled or adequately bled.

- Installation is performed in the reverse order of removal.

CAUTION!
When installing the mount, make sure the rubber insulator does not push out of the bracket. After installing, make sure the hydraulic unit and the control module are secure, otherwise malfunctions will register.

- Remove the brake pedal actuator (VAG 1869/2).

- Bleed the brake system. Refer to => [ Brake System Bleeding General Information ] Brake System Bleeding General Information.

- Enter radio code.

- Code the Anti-lock Brake System (ABS) control module using the in "Guided Fault Finding".

A steering angle sensor, transverse acceleration sensor and brake pressure sensor basic setting must be done.