ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING: Installing

Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal and note the following:

-- Carefully press the hydraulic control unit -2- in the pins -arrows- on the bracket -1-.

The hydraulic control module must rest in all pins.

-- Insert the brake lines -1 and 2- into the ABS Hydraulic Unit -N55- and then install the union bolts by hand and tighten.

Fig 1: Hand Tightening Union Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Connect the connector -3-.

-- After securing the brake lines to the hydraulic unit, perform output diagnostic test mode using the Vehicle Diagnostic Tester.

It can be determined in output diagnostic test mode, if the line connections were switched.

-- Remove the : VAG1869/2 .

-- Bleed the brake system. Refer to HYDRAULIC SYSTEM, BLEEDING .

-- If the ABS Control Module -J104- /ABS Hydraulic Unit -N55- is being replaced, select the "Replace" function for the ABS Control Module -J104- /ABS Hydraulic Unit -N55- on the Vehicle Diagnostic Tester, Guided Functions .

CAUTION:

Faulty brakes increase the risk of an accident.

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

-- Install the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .