Crankshaft Position Sensor: Service and Repair

Crankshaft Position Sensor

WARNING: The exhaust pipe from the turbo can be extremely warm, so exercise extreme care.

To remove
1. Undo the exhaust manifold heat shield.







2. Undo the screw securing the heat shield and sensor.
3. Detach the sensor and O-ring.







4. Follow the sensor connecting cable and undo the clip on the water pipe.
5. Detach the connector from the holder.
6. Unplug the connector.
7. Change the sensor.

To fit
1. Fit the sensor provisionally so that the cable runs along the water pipe. Change the O-ring if necessary and lubricate it with engine oil.







2. Spray the connector with Kontakt 61 (part no. 30 04 520), press together the connector and fit it in the holder.
3. Secure the cables with the retaining clip. Take care not to pinch or damage the cables with the clip.
4. Press in the sensor and screw it on with the O-ring fitted together with the heat shield. Make sure the O-ring is positioned correctly so that the sensor bottoms in the engine block. Otherwise, there is a risk of the sensor mounting lug breaking off.







5. Lubricate the screw for the exhaust manifold heat shield with Molykote 1000 or equivalent (part no. 30 20 271) and fit the heat shield.
6. Start the engine and check for oil leaks.
Tightening torque 50 Nm (36 lbf ft)