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Coolant temperature sensor

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 unscrew the expansion tank filler cap (to release the pressure, if any) and then screw it back into place.


2. Unplug the connector and remove the sensor using a 19 mm dog-leg spanner or the like.


To fit

Fit in reverse order.

Spray the connector with Kontakt 61 contact cleaner (part no. 30 21 763).

Fit a new sealing washer as necessary.

Lubricate the threads with Molykote 1000 (part No. 30 20 271) or the equivalent.

Tightening torque: 13 Nm (9.6 lbf ft)

After fitting, top up with coolant as necessary. Dilute the coolant with water to a mixture of 1:1 (equal parts water and coolant).

Start the engine and warm it up. Check that there is no leakage.

Top up with coolant as necessary.