Control Module, Installing On Hydraulic Unit

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Special tools and workshop equipment required

Torque Screwdriver: VAG1624
ESD Work Surface: VAS6613
Screwdriver Insert, T25 Torx Bit: VAS5377

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

-- 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 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 the brake system is bled select the function "Replacing" for the ABS Control Module -J104- /ABS Hydraulic Unit -N55-. Refer to 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