Abs Control Module -J104- /Abs Hydraulic Unit -N55-, Removing And Installing: Removing

-- Insert the :VAG1869/2 between the brake pedal and driver seat. Press the brake pedal down at least 60 mm (2.4 in.).

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat

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NOTE:

By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.

WARNING:

Risk of skin irritation.

To prevent skin contact with brake fluid, wear chemical resistant safety gloves.

-- Remove the protective cap -3- from the bleeder screw -1- on the left front caliper.

Fig 2: Identifying Protective Cap, Bleed Screw And Container Bleeder Hose

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-- Connect the bleeder bottle hose -2- as shown.

-- Open the bleeder screw to reduce the pressure in the brake system.

-- Close the bleeder screw and remove the bleeder bottle.

-- Repeat the procedure on the left rear brake caliper.

NOTE:

Do not remove the :VAG1869/2 .

NOTE:

To protect against escaping brake fluid, place enough lint-free cloths in the area below the hydraulic control unit.

-- Mark the brake lines for reinstallation.

-- Remove the brake lines -1 and 2- from the ABS Hydraulic Unit -N55-.

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CAUTION:

There is a risk of damaging the brake lines.

-- Immediately seal brake lines and threaded holes with a clean plug from the Assembly Part Set :5Q0 698 311 .

CAUTION:

There is a risk of damaging the brake lines.

-- Remove the ABS Control Module -J104- with ABS Hydraulic Unit -N55- -2- carefully from the pins -arrows- on the bracket -1-

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-- Remove the ABS Control Module -J104- with the ABS Hydraulic Unit -N55- just enough from the vehicle to disconnect the connector.

-- Release the connector for the ABS Control Module -J104- -3- and disconnect it from the control module.

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NOTE:

Make sure that no brake fluid enters the control module connector housing.

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

-- Turn the ABS Control Module -J104- with ABS Hydraulic Unit -N55-

CAUTION:

The ABS Hydraulic Unit -N55- may not run empty. Seal all holes with Assembly Part Set :5Q0 698 311 .

Remove the bolt -arrow- and the bracket -1-.

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NOTE:

The ABS Control Module -J104- can be replaced separately if faulty. Refer to CONTROL MODULE, SEPARATING FROM HYDRAULIC UNIT .

The ABS Hydraulic Unit -N55- must be replaced together with the ABS Control Module -J104- if faulty.