All-Wheel Drive Clutch Valve -N445- OR All-Wheel Drive Clutch Valve 2 -N446-, REMOVING AND INSTALLING: Removing

The ignition is off.

-- Place the vehicle on a hoist.

-- Lower the back section of the exhaust system just a little and secure it.

-- Remove the wiring harness bracket from the rear final drive. Refer to ) If equipped, remove the screws -arrows- and remove the wiring harness bracket -1- from the rear final drive.

-- Mark the connectors -1 through 4- for the Oil Pressure/Temperature Sensor -- and for the Clutch Valves --.

Fig 1: Identifying Oil Pressure/Temperature Sensor Connectors

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors -1- and -2-.

-- Disconnect the connector -3- from the All-Wheel Drive Clutch Valve 2 -N446- or the connector -4- from the All-Wheel Drive Clutch Valve -N445-.

-- Place the Drip Tray under the rear final drive.

-- Remove the bolts -1- from each of the Clutch Valves -- using the Hex Socket - 4mm :T10370 .

Fig 2: Identifying Clutch Valves

Courtesy of AUDI OF AMERICA, LLC

-- Carefully pry out the Clutch Valve -- with a flat blade screwdriver -3-. Be careful of the pressure spring when doing this. The pressure spring could fall out of the opening in the hydraulic control unit -6-.

All-Wheel Drive Clutch Valve 2 -N446-, identification color: brown
All-Wheel Drive Clutch Valve -N445-, identification color: black