Oil Temperature Sensor/Switch: Service and Repair

Removing and installing oil temperature sensor
Removal





1. Undo fastening screw M6x34 on the air cleaner housing (A/f 13).
2. Undo hose clamp between the air cleaner housing and intake manifold.
3. Pull off electrical wire connector of the hot film mass air flow meter:
^ To do this, push the plug downwards and press on the grooved surface at the sides.
^ Then pull the connector up and off.
^ Open the omega clip on the left side of the air cleaner housing and take out the electrical wire of the hot film mass air flow meter.
^ Re-close the omega clip for the removal (risk of breakage)





4. Tilt the complete air cleaner housing 90° upwards and remove rearwards.





5. Pull off the connecting hoses between the charge air coolers and the pressure pipe. To do this, unclip the locking clips with a screwdriver. Then return the locking clips to installation position. Additionally undo a fastening screw on the right-hand pressure pipe side.





6. Undo pressure pipe -middle- by removing the spring clip -5-, hose clamp -3-, hexagon-head bolts -1 & 2- and electrical plug -4-. Pull off vacuum hose to the control valve.





7. Pull off electrical plug. Undo the fastening screws and remove the throttle body.





8. Pull off plug, unscrew oil temperature sensor by using a straight ring wrench, A/f 22.

Installation
1. Fasten oil temperature sensor with new sealing ring.
2. Check throttle sealing ring and replace it if necessary. Fasten throttle body. Push on electrical plug.
3. Install pressure pipe. Wet the connecting hoses between the charge air coolers and pressure pipe with water at the connecting points and fit the hoses. The hoses must audibly engage. Then re-check whether they are positioned properly by tilting and pulling on them.
4. Install air cleaner assembly.





Location Thread Tightening torque Nm (ft lbs.)
Oil temperature sensor 30 (22)