Replacing the Control Module for ABS and Dynamic Stability and Traction Control (DSTC)

Replacing the control module for ABS and dynamic stability and traction control (DSTC)

Preparation

Disconnect the battery lead
See Battery, disconnecting Battery Disconnecting.

Preparations for replacement

Remove the air cleaner (ACL) housing
See Brake pipe master cylinder / ABS unit, replacing, B5254T2 Brake Pipe Master Cylinder / ABS Unit, Replacing.

Remove the integrated relay / fusebox. Remove the connector for the ABS unit
See Replacing the brake pipe between the hydraulic unit, front wheel and junction , B5254T2 .

Removal

Remove the control module





Remove:
- the pump motor connector
- the four screws. Use a 6 mm torx external socket.
Carefully lift the control module.

Check the control module





Check:
- that the control module is of the correct type (this depends on whether the car is equipped with STC or not)
- that none of the pins or sockets on the connector are damaged
- that there are no contaminants on the mating surfaces between the control module and the ABS hydraulic modulator
- that no part of the control module seals remain on the ABS hydraulic modulator valves.

Installation

Install the control module on the ABS hydraulic modulator




Center the control module on the ABS hydraulic modulator valves before the valves are pushed into place.

Install:
- the control module. Tighten to 1.8 Nm
- the connectors for the pump motor and the control module
- the air cleaner (ACL) housing. See Brake pipe master cylinder / ABS unit, replacing, B5254T2 Brake Pipe Master Cylinder / ABS Unit, Replacing
- the integrated relay / fusebox. See Hydraulic unit, replacing Service and Repair.

Function test
See Wheel sensor, front, replacing Wheel Sensor Front, Replacing.
Use VIDA vehicle communication to calibrate the control module.