ABS Control Module -J104- AND ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING, VEHICLES WITH DIESEL ENGINE AND AWD: Removing

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-- Insert the Brake Pedal Actuator: VAG1869/2 between the brake pedal and driver seat. Press the brake pedal down at least 60 mm (2.36 in.).

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 bleed screw -1- on the left front caliper.

Fig 1: Identifying Protective Cap, Bleed Screw And Container Bleeder Hose

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

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

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

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

NOTE:

Do not remove the Brake Pedal Actuator: VAG1869/2 .

-- Remove the engine cover. Refer to the appropriate Engine Assembly article - Engine Cover, Removing and Installing .

-- Remove the noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

-- Remove the front exhaust pipe. Refer to the appropriate Exhaust System article - Front Exhaust Pipe, Removing and Installing .

-- Remove the right drive axle. Refer to DRIVE AXLE, REMOVING AND INSTALLING .

-- If equipped, release the retainer in the direction of -arrow-, pull the cover -1- off to the left and remove it.

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-- Unclip the wiring guide.

-- Press the locking mechanism downward in the direction of -arrow A-.

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-- Release the connector in the direction of -arrow B-.

-- Remove the connector -1-.

NOTE:

Make sure that no brake fluid enters the control module connector housing. This could lead to contact corrosion and thereby cause the system to fail.

Clean a dirty connector housing thoroughly with compressed air.

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

Fig 2: Brake Line Tightening Sequence

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CAUTION:

There is a risk of damaging the brake lines.

Do not change the shape.

-- Mark the brake lines on the hydraulic control module.

-- Remove the union bolts for the brake lines in the sequence -6 through 1- and push the brake lines slightly to the side.

-- Immediately seal the open connection points with clean plugs from the Assembly Part Set: 5Q0 698 311 .

-- Remove the hydraulic control module -1- upward in the direction of -arrow-.

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-- Place the hydraulic control unit at the bottom of the engine compartment and secure it from falling down.

-- Remove the bolts -arrows- and remove the mounting bracket from the hydraulic control unit.

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-- Move the suspension strut -1- to the side and to the rear and secure it in this position with a suitable wooden block -2-.

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-- Guide the hydraulic control unit -3- out through the wheel housing.

CAUTION:

Risk of destroying.

Do not remove the pump motor.