LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 2021 >> Atlas SE R-Line, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> 45 Antilock Brake System >> Control Module And Hydraulic Unit >> ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING >> Abs Control Module And Abs Hydraulic Unit, Removing And Installing, Gasoline Engine >> Installing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Abs Control Module And Abs Hydraulic Unit, Removing And Installing, Gasoline Engine: Installing

Install in reverse order of removal and note the following:

NOTE:

Only remove the plugs on the new hydraulic unit if the corresponding brake line is installed.

If the plugs are removed too early from the hydraulic unit, brake fluid can escape and the unit may not be sufficiently filled or adequately bled.

When installing the hydraulic unit, make sure that the rubber bushings are not pushed out of the bracket.

-- Before assembling the holder for the ABS Hydraulic Unit -N55- in the bracket, spray the rubber bushings with Silicone Lubricant Spray: D 007 000 A2  .

-- Install the brake lines carefully with the : VAG1410/8  .

Fig 1: Identifying Torque Wrench - Assembly Tool
GWWW00-11660Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Brake Line Tightening Sequence: 

Fig 2: Brake Line Tightening Sequence
GWWN45-10263Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the : VAG1869/2  .

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

-- Code the radio.

-- Code the ABS Control Module -J104- using the Vehicle Diagnostic Tester in "Guided Fault Finding"  .

While doing so, a basic setting for the Steering Angle Sensor -G85-, Transverse Acceleration Sensor -G200-, Longitudinal Acceleration Sensor -G251- and Brake Pressure Sensor 1 -G201- must be performed.