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

-- Read and note the present control module code.

-- On vehicles with a coded radio, note the code. Retrieve it if necessary.

-- Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

Diesel Engine with Particulate Filter:

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Remove the drive axle heat shield -arrows-, if equipped. Refer to DRIVE AXLE HEAT SHIELD, REMOVING AND INSTALLING .

Fig 1: Drive Axle Heat Shield

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-- Remove the front exhaust pipe. Refer to OVERVIEW - MUFFLER [DGXA, DJXA] or OVERVIEW - MUFFLER [DKFA] .

-- Disconnect the connector -1-.

Fig 2: Identifying Clamping Sleeve

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-- Loosen the clamping sleeve -2- and slide it toward the rear.

-- Remove the bolts -1-.

Fig 3: Identifying Bolts

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-- Loosen the bolt -2- and remove the clamp.

-- Remove the front exhaust pipe.

For Vehicles with Parking/Auxiliary Heater:

-- Remove the front exhaust pipe. Refer to OVERVIEW - MUFFLER [DGXA, DJXA] or OVERVIEW - MUFFLER [DKFA] .

-- Remove both nuts -arrows- from the brackets for the coolant line -1- on the longitudinal member and the bulkhead.

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-- Remove the bracket from the pins.

-- Pull the coolant line as far downward as possible.

Continuation for All Vehicles:

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-- If equipped, remove the heat shield -1-.

-- To do so, unclip the heat shield -1- from the bracket -2- -arrow-.

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-- For vehicles with a heat shield, remove the heat shield -item ) OVERVIEW - CONTROL MODULE AND HYDRAULIC UNIT - List Item: Heat Shield.

-- Unclip the wiring guide.

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

-- Release the locking mechanism in the -direction of arrow B-.

-- Remove the connector -1-.

-- Insert the Brake Pedal Actuator: VAG1869/2 .

Fig 4: Identifying Brake Pedal Depressor V.A.G 1869/2

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

Fig 5: 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 6: Identifying V.A.G 1869/2

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-- Open the breather valve.

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

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

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

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

NOTE:

Make sure no brake fluid gets on the contacts.

-- Remove the cover from the bulkhead and unclip the brake lines.

-- First label both brake lines -5- and -6-.

Fig 7: Brake Lines, Attaching To Hydraulic Unit Sequence

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-- Remove the brake lines -5- and -6- from the ABS Hydraulic Unit -N55-.

-- Immediately seal off the brake lines and threaded holes with the plugs from repair kit 1H0 698 311 A.

-- Mark, remove and seal off the remaining brake lines (brake calipers).

-- Pull the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- upward from the shock absorbers -arrow-.

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-- Carefully place the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- at the bottom of the engine compartment.

NOTE:

Position the ABS Hydraulic Unit -N55- with the ABS Control Module -J104- so that it cannot fall down.

-- Raise the vehicle.

For Vehicles with Parking/Auxiliary Heater:

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-- Remove the bracket in the vehicle from the ABS Hydraulic Unit -N55- -arrows-.

Continuation for All Vehicles:

-- Guide the ABS Hydraulic Unit -N55- out of the vehicle.