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HOMESERVICE MANUALSAUDI2019S5 PRESTIGE, 2D COUPEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 187 (ANTILOCK BRAKE SYSTEM)45 ANTILOCK BRAKE SYSTEMCONTROL MODULE AND HYDRAULIC UNITABS CONTROL MODULE -J104- /ABS HYDRAULIC UNIT -N55-, REMOVING AND INSTALLINGINSTALLING
2019 Audi S5 Prestige, 2D Coupe

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

2019 Audi S5 Prestige, 2D CoupeSECTION Installing
WARNING: This page is about a different car, the 2019 Audi S5 Sportback, 2019 Audi RS 5 Sportback, and 2018 Audi S5 Sportback. 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:

Faulty brakes increase the risk of an accident.

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

RENDER: 1.0x

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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.