Control Module, Installing On Hydraulic Unit

Special tools and workshop equipment required

Torque Screwdriver :VAG1624
ESD Work Surface :VAS6613
TORX^® insert T25

CAUTION:

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

Bolts - Control Module to Hydraulic Unit

Procedure

NOTE:

Use the complete repair kit when installing.

CAUTION:

There is a risk of destroying the ABS control module.

Protect the control module from bumps or impact. A control module that has fallen to the ground can no longer be used.

The hydraulic unit -4- with the pump motor and the connector -3- faces down.

Fig 1: Identifying Hydraulic Unit
Courtesy of AUDI OF AMERICA, LLC

-- Place the control module -2- carefully from above on the hydraulic unit without tilting.

-- Install the new bolts -1- by hand until the control module touches the hydraulic unit evenly.

NOTE:

If the bolts for the control module on the hydraulic unit are difficult to install or cannot be tightened to the tightening specification, then the hydraulic unit must be replaced.

-- Tighten the bolts in two stages in a diagonal sequence.

-- Install the hydraulic control unit. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .

-- After installing the hydraulic control unit and bleeding the brake system, select the function "Replacing" for the ABS Control Module -J104- /ABS Hydraulic Unit -N55- using the Vehicle Diagnostic Tester, Guided Functions .

WARNING:

Risk of accident!

Make sure the brakes are working correctly before driving the vehicle for the first time.

Tightening Specifications

Refer to OVERVIEW - CONTROL MODULE AND HYDRAULIC UNIT