Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Replacing coolant temperature sensor (M52TU, M54)

Turn off ignition.

Installation location:







Coolant temperature sensor (1) is fitted below intake air manifold in cylinder head of cylinder 6.
Remove intake air manifold.








Disconnect plug connection (1).
Unscrew temperature sensor.


Installation:
Tightening torque, 13 Nm.
Check coolant level, top up coolant if necessary.

NOTE:
Read out fault memory of DME control unit.
Check stored fault messages.
Rectify faults.
Then clear fault memory.