FixVault

Abs Control Module -J104- /Abs Hydraulic Unit -N55-, Removing And Installing: Installing

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2020 Audi S4, 2020 Audi A4 allroad, 2020 Audi A4 Quattro, 2020 Audi A4, and 2019 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
GWWA45-10349Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal and note the following:

-- If necessary, install the hydraulic control unit bracket.

-- Insert the hydraulic control unit just far enough into the vehicle in order to connect the connector -3-.

-- Carefully push the hydraulic control unit -1- into the pins -arrows-.

GWWA45-10354Courtesy of AUDI OF AMERICA, LLC

-- Remove the plug.

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

GWWA45-10349Courtesy of AUDI OF AMERICA, LLC

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

TIP:

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

-- Remove the Brake Pedal Actuator:VAG1869/2  .

-- Remove all cloths from the vehicle that were previously placed down.

-- 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:

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