ABS Control Module -J104- AND ABS Hydraulic Unit -N55- WITH 4-CYLINDER GASOLINE ENGINE AND ABS MARK 70 ABS/ASR: Removing

Fig 1: Configuration

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Installed location:

The ABS Control Module -J104- is attached to the ABS Hydraulic Unit -N55- and is located inside the engine compartment on the right side.

1. ABS Hydraulic Unit -N55- with ABS Control Module -J104-
2. Brake booster with tandem brake master cylinder

-- 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 Anti-Lock Brake System (ABS)/ASR Mark 70 
• Function 
• Check Coding in the Anti-lock Brake System (ABS) Control Module J104 

Vehicles with 2.0L Gasoline Engine and Turbocharger 

Fig 2: Identifying Engine Cover Attachment Points

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-- Remove the engine cover upward from the attaching points -arrows-. Refer to REMOVAL AND INSTALLATION ,REMOVAL AND INSTALLATION , REMOVAL AND INSTALLATION , Removal And Installation , Removal And Installation .

-- Open the clamp and remove the air guide hose from the air filter. Refer to REMOVAL AND INSTALLATION ,Removal And Installation ,REMOVAL AND INSTALLATION .

-- Press the release button to remove the air guide hose -1-.

Fig 3: Identifying Charge Air Pipe Bolt And Hose Clamp

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-- Remove the air guide hose -1- and move it aside.

-- Remove the screw -arrow- for the air guide pipe.

-- Remove the air guide pipe; to do this, loosen the hose clamp -2-.

-- Remove the intake hose between the intake hose and the turbocharger.

-- Seal the turbocharger with the Engine Bung Set VAS6122.

Continuation for All Vehicles 

Fig 4: Identifying Nuts And Heat Shield

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-- Remove the nuts -1- and remove the heat shield -2-, if equipped.

-- Disconnect the connector from the ABS Control Module -J104- -arrow-.

Fig 5: Identifying Direction To Release And Remove Connector From Control Module

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-- Install the Brake Pedal Actuator VAG1869/2.

Fig 6: Identifying Brake Pedal Depressor V.A.G 1869/2

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-- Remove front left caps -1-.

Fig 7: Identifying Bleeder Screw Cap

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-- Remove rear left caps -1-.

Fig 8: Identifying Vent Screw Cap

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Use suitable bleeder hose. It must fit tightly on bleeder valve so that no air gets into brake system.

-- Attach the bleeder bottle bleed hose -1- to the left front brake caliper bleed valve.

Fig 9: Identifying Bleed Valve

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-- Open the bleed valve.

-- Attach the bleeder bottle bleed hose -1- to the brake caliper bleed valve/left rear brake cylinder.

Fig 10: Identifying Bleed Valve

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-- Open the bleed valve.

-- Push the brake pedal with the Brake Pedal Actuator VAG1869/2 at least 60 mm.

-- Close left front and left rear bleeder valves.

Do not remove the Brake Pedal Actuator VAG1869/2.

-- Place a lint-free cloth under the ABS Control Module -J104- and the ABS Hydraulic Unit -N55-.

Make sure no brake fluid gets onto contacts.

-- Mark brake lines -A- and -B- from brake master cylinder.

Fig 11: Identifying Brake Lines

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-- Remove the brake lines -A- and -B- from the Anti-lock Brake System (ABS) Hydraulic Unit -N55-.

-- Close the brake lines and threaded holes immediately using Plugs 1H0 698 311 A.

-- Mark brake lines (brake calipers) -1- to -4-, unscrew and seal.

-- Remove the Anti-lock Brake System (ABS) Hydraulic Unit -N55- and the ABS Control Module -J104- in direction of -arrow- and pull upward out of the shock absorbers.

Fig 12: Identifying Hydraulic Unit With Control Module Upward Removed Out Of Shock Absorbers

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-- Turn the Anti-lock Brake System (ABS) Hydraulic Unit -N55- with the ABS Control Module -J104- upside down.

-- Remove the bracket. Refer to - 10- from the ABS Hydraulic Unit -N55- inside the engine compartment.

-- Remove the ABS Hydraulic Unit -N55- with the ABS Control Module -J104-.