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HOMESERVICE MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 32 (ANTILOCK BRAKE SYSTEM)45 ANTILOCK BRAKE SYSTEMCONTROL MODULE AND HYDRAULIC UNITABS CONTROL MODULE -J104- /ABS HYDRAULIC UNIT -N55-, REMOVING AND INSTALLINGINSTALLING
2018 Audi A5 Quattro Prestige, 2D Convertible

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

2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION 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
  • The hydraulic control module must rest in all pins.

-- 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.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.