ABS Control Module -J104-, SEPARATING FROM THE ABS Hydraulic Unit -N55-, MARK 70 ABS/ASR

2012 Volkswagen Jetta TDI, 4D Wagon, Standard TransSECTION ABS Control Module -J104-, SEPARATING FROM THE ABS Hydraulic Unit -N55-, MARK 70 ABS/ASR
WARNING: This page is about a different variant/trim than selected.

Removing 

-- Get the coding from the ABS Control Module -J104- and write it down.

Use the Vehicle Diagnostic Tester.

  • Chassis 
  • Brake System 
  • Anti-lock braking system ABS/ASR Mark 70 
  • Function 
  • Check coding in the ABS control module J104 

Remove the ABS Hydraulic Unit -N55- and ABS Control Module -J104-, refer to ABS Control Module -J104- AND ABS Hydraulic Unit -N55-, WITH ABS MARK 70 ABS/ASR .

Fig 1: Identifying Sealing Plug Repair Set, Part No. 1H0 698 311 A
GWWN45-0039Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Install the transportation protection for the valve domes on the ABS Control Module -J104- after separating the ABS Hydraulic Unit -N55- from the ABS Hydraulic Unit -N55-.

The warranty on the ABS Hydraulic Unit -N55- will not be honored if the transportation protection is missing.

  1. Transport protection for valve domes (foam)
  2. M10 plug
  3. M12 plug

-- Place the ABS Hydraulic Unit -N55- and the ABS Control Module -J104- on a clean level surface facing upward.

-- Remove bolts -arrows-.

Fig 2: Locating Control Module Torx Bolts
GWWN45-10043Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the ABS Control Module -J104- from the ABS Hydraulic Unit -N55- in -direction of arrow- without tilting it.

Fig 3: Removing Control Module From Hydraulic Unit Without Angling
GWWN45-10044Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Carefully remove all the seals from the valve domes on the ABS Hydraulic Unit -N55-.

WARNING:
  • The circuit board is exposed when the ABS Control Module -J104- is removed.
  • Protect the ABS Control Module -J104- from moisture and dirt particles from getting inside.
  • The pump must not be separated from the ABS Hydraulic Unit -N55-.
  • Avoid build-up of static electricity!

-- Cover ABS Control Module -J104- solenoid coils with a lint-free cloth.

After disconnecting from ABS Control Module -J104- and ABS Hydraulic Unit -N55-, use transportation protection for valve body.

Installing, refer to ABS Control Module -J104-, ATTACHING TO ABS Hydraulic Unit -N55-, MARK 70 ABS/ASR .

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.