Engine - Coolant Temperature Sensor/Switch: Service and Repair

Engine Coolant Temperature Sensor

Removing

• Engine cold.

- Briefly open the coolant reservoir cap to reduce the residual pressure in the coolant system.

- Loosen the hose clamps - arrows - and remove the air guide tube.






• Ignore - 1 -.

- Disconnect electrical connector - 1 - on throttle valve control module (J338).






- Remove the bolts - arrows - and the throttle valve control module.

- Remove the intake manifold support; to do so, remove the nut - 2 - and bolt - 1 -.






• Different engine coolant temperature sensor (G62) may be installed, depending on the version.

Inserted Version

- Disconnect the connector - 1 - from the engine coolant temperature sensor.






• Lay a cloth below to catch escaping coolant.

- Remove the clamp, to do so, press the latches - arrow -.

- Remove the engine coolant temperature sensor - 2 -.

Threaded Version

- Disconnect the connector - 2 - from the engine coolant temperature sensor.






• Lay a cloth below to catch escaping coolant.

- Remove the bolts - arrows - and the retaining plate - 1 -.

- Remove the engine coolant temperature sensor.

Installing

• Tightening specifications, refer to => [ Coolant Pump and Thermostat Overview ] Coolant Pump and Thermostat Overview.

Installation is performed in reverse order of removal, noting the following:

• Replace O-rings.

• To prevent coolant loss, install the engine coolant temperature sensor immediately.

• The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing.

• Secure all hose connections with hose clamps appropriate for the model. Refer to the electronic parts catalog ETKA.

• In order to be able to securely mount the air guide hoses on their connectors, spray the screws on the previously used clamps with a rust remover.

- Install the intake manifold support.

- Install the throttle valve control module.

- Check coolant level => [ Check coolant level. ] Service and Repair.