ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING, WITH 5-CYLINDER GASOLINE ENGINE AND ABS MARK 60 EC ABS/EDL/ASR/ESP: Removing

WARNING: This page is about a different variant/trim than selected.

Fig 1: Configuration

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Component 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.

ABS Hydraulic Unit -N55- with ABS Control Module -J104-
Brake Booster with Tandem Brake Master Cylinder

WARNING:

Do not bend the brake lines near the ABS Hydraulic Unit -N55- !

-- Retrieve the coding from the ABS Control Module -J104- and write it down. Refer to Vehicle Diagnostic Tester.

NOTE:

The battery ground cable must be disconnected for the following procedure. Check if a coded radio is installed. If necessary, obtain anti-theft code beforehand.

CAUTION:

Danger of causing damage to electronic components when disconnecting the battery.

Follow the steps for disconnecting the battery.

-- Open clamp -2- and disconnect intake hose.

Fig 2: Disconnecting Connector And Intake Hose

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-- If equipped, disconnect the connector -1- and remove.

-- Remove the bolts -3- and the intake hose.

-- Pull the engine with a jerk out of the fasteners first at the front in direction of -arrows 1-, then at the right rear in direction of -arrows 2- and finally at the left rear in direction of -arrow 3-.

Fig 3: Identifying Removal Of Engine Cover With Jerk Out Of Mount First

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-- Carefully swivel engine cover out of rear area.

Fig 4: Identifying Nuts And Heat Shield

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-- If equipped, remove the nut -1- and remove the heat shield -2-.

-- Disconnect and remove the connector from the ABS Control Module -J104- in direction of -arrow-.

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

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-- Insert the : 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 Bleeder Screw Cap (Rear)

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Use a suitable bleeder hose

It must fit tightly on the bleeder valve so that no air can get into the brake system

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

Fig 9: Identifying Bleed Valve

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-- Open the breather valve.

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

Fig 10: Identifying V.A.G 1869/2

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-- Open the breather valve.

-- Push the brake pedal at least 60 mm using the : VAG1869/2 .

-- Close the left front and left rear bleeder valves.

Do not remove the : VAG1869/2 .

-- Place enough lint-free cloths under the ABS Control Module -J104- and the ABS Hydraulic Unit -N55-.

Make sure no brake fluid gets on the contacts

CAUTION:

Do not confuse the brake lines when connecting them to the ABS Hydraulic Unit -N55-. Mark the lines in their installed position before removing them.

-- First label both brake lines from the brake master cylinder -A and B-.

Fig 11: Identifying Brake Lines (Brake Caliper) -1- To -4- And Brake Lines (Master Cylinder) -A To B-

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-- Remove the brake lines -A and B- from the ABS Hydraulic Unit -N55-.

-- Immediately seal the threaded holes with the plugs from the assembly repair kit.

-- Close brake lines immediately using Sealing Plugs or with suitable plugs from the : VAS6122 .

-- Label brake lines -1 through 4- and then remove them.

-- Immediately seal the threaded holes with the plugs from the assembly repair kit.

-- Close brake lines immediately using Sealing Plugs or with suitable plugs from the : VAS6122 .

-- Remove the hex fitting bolt from the bracket -arrow-.

-- Remove the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- and the bracket sideways in direction of -arrow- from the rubber bushings on the bracket.

-- Turn the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- upside down.

-- Remove the bracket in the vehicle from the hydraulic unit -arrows- (only on engines with too little clearance between the cross panel and engine).

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