Transmission Speed Sensor: Service and Repair

Transmission Input Speed Sensor (G182) and Clutch Oil Temperature Sensor (G509)

Both sensors are a single component and can only be replaced together. They are coated with fluid in the transmission near multi-plate clutch. Before removing, the Direct Shift Gearbox (DSG) transmission Mechatronic unit must be removed.

Often, the sensor wire is pulled. It will get damaged. If the wire was pulled, the sensor must be replaced.

Removing

- Remove the DSG transmission Mechatronic unit. Refer to => [ DSG Transmission Mechatronic (J743), Transmission Installed ] DSG Transmission Mechatronic (J743), Transmission Installed.

Do not pull on the wire.

- Remove the bolt and carefully pry out the sensor with a screwdriver or pliers.






Installing

Install an old sensor only if:

• The sensor is working correctly.

• The wire was not pulled out during removal.

If this is not the case, you should install a new sensor.

- Lubricate the sensor with DSG transmission fluid and then install it.

- Tighten the bolt to 10 Nm.

- Install the DSG transmission Mechatronic unit. Refer to => [ DSG Transmission Mechatronic (J743), Transmission Installed ] DSG Transmission Mechatronic (J743), Transmission Installed.

Do not pinch the wire when installing the Mechatronic unit!