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Engine coolant temperature sensor

Engine coolant temperature sensor

Warning

Be careful if the car is warm. The coolant is hot and there is a risk of burns from the intake manifold.


To remove


1. Carefully loosen the cap on the expansion tank (to release any pressure) and then screw it on again.


2. Unplug the connector and remove the sensor with a 19mm dog-leg spanner, for example.


To fit



1. Fit the sensor. Lubricate the threads with vaseline (part no. 30 20 271) or equivalent. Fit a new sealing washer if necessary. Spray the connector with Kontakt 61 (part no. 30 04 520) and plug it in.

Tightening torque 13 Nm (9.6 lbf ft).

2. Top up with coolant if necessary when fitting is completed.

Start the engine. Check for any leaks that may have arisen. Top up with coolant if necessary.