All Wheel Drive Control Module

Special tools and workshop equipment required

Torque wrench 5-50 Nm VAG 1331
Drip tray for VAS 6100 VAS 6208

Removing

NOTE:

When removing control module -1-, cover -2- and plate spring -5- are removed together. Pressure sensor -4- and valve -3- are removed separately.

Fig 1: Identifying Control Module Remove/Install Components

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-- Switch ignition off.

-- Separate connectors -1- and -2- on control module.

Fig 2: Identifying Connector To Upper Control Module

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-- Place drip tray under final drive.

-- Remove screws -arrows-.

Fig 3: Identifying All-Wheel Drive Control Module J492

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Ensure no parts fall below when removing control module.

-- Carefully remove control module -A-.

-- Carefully grasp Haldex clutch control valve -N373- -A- with pliers on metal housing -arrow- and remove.

Fig 4: Identifying Haldex Clutch Control Valve N373, Metal Housing & Pressure Sensor

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-- Remove pressure sensor -B-.

-- Remove Haldex clutch control valve -N373- seal -arrow- from housing.

Fig 5: Identifying Haldex Clutch Control Valve N373 Seal From Housing

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Installing

Install in reverse order, paying attention to the following:

-- Coat the new Haldex clutch control valve -N373- seal -arrow- with high performance Haldex clutch oil and insert it in the housing.

Fig 6: Identifying Haldex Clutch Control Valve N373 Seal From Housing

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-- Replace O-rings -1- and -2-.

Fig 7: Identifying O-rings

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-- Note different diameter:

Inner diameter O-ring -1- = 11 mm
Inner diameter O-ring -2- = 12 mm

-- Replace O-ring -arrow A- at pressure sensor.

Fig 8: Identifying O-Ring, Marking, Plate Spring & Pressure Sensor

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NOTE:

The marking -arrow B- on the convex side of the plate spring -2- faces up and toward the pressure sensor -1- in installation location.

-- Place plate spring -2- with convex side on pressure sensor -1-.

-- Place the new cover -5- on the control module -6-.

Fig 9: Identifying Cover, Control Module, Pressure Sensor, New Cover, Valve, Control Module & O-rings

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-- Insert pressure sensor -4- with plate spring in new cover -5- and press onto connector. Convex side of plate spring faces toward pressure sensor.

-- Lightly coat new pressure sensor -4- O-ring with high performance Haldex clutch oil.

-- Insert valve -1- in new cover -5- and control module -6- and press onto connector.

-- Lightly coat new O-rings -2- and -3- with high performance Haldex clutch oil.

-- Carefully position the control module -A- and tighten the screws -arrows- to the specified tightening specification, see "Bolt" in item 2.

Fig 10: Identifying All-Wheel Drive Control Module J492

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-- Check the oil level in the Haldex clutch HALDEX CLUTCH OIL LEVEL, CHECKING .