Evaporator Temperature Sensor / Switch: Service and Repair

Temperature Sensors

=> [ Fresh Air Intake Duct ]

=> [ Left Vent ]

=> [ Right Vent ]

=> [ Evaporator Vent ]

=> [ Interior Temperature Fan ]

=> [ Center Outlet Temperature ]

=> [ Left/Right Rear Center Console Temperature ]

Fresh Air Intake Duct

- Remove left and right plenum chamber covers.

- Remove dust and pollen filter. Refer to => [ Dust and Pollen Filter ] Air Distributor Housing.

- Remove temperature sensor - A - from intake housing - B -





Left Vent

Removing

- Switch off ignition.

- Remove the driver side storage compartment. Refer to => Body Interior 70 Removal and Installation

- Remove left footwell vent driver's side.

- Disconnect harness connector - A - from temperature sensor.





- Turn temperature sensor - 1 - in direction of arrow approximately 90°.

- Take temperature sensor out of heating and A/C unit.

Installing

- Install in reverse order of removal.

Right Vent

Removing

- Switch off ignition.

- Remove glove box.

- Remove right footwell vent.

- Disconnect harness connector - A - from temperature sensor.





- Turn temperature sensor - 1 - in direction of arrow approximately 90°.

- Take temperature sensor out of heating and A/C unit.

Installing

- Install in reverse order of removal.

Evaporator Vent

Removing

- Switch off ignition.

- Remove glove compartment.

- Remove right footwell vent.

- Disconnect harness connector - A - from sensor.





- Turn sensor - 1 - in direction of arrow approximately 90°.

- Take temperature sensor out of heating and A/C unit.

Installing

- Install in reverse order of removal.

Interior Temperature Fan

- Remove front A/C control head Climatronic Control Module (J255). Refer to => [ Front A/C Control Head Climatronic Control Module ] Front A/C Control Head Climatronic Control Module.

- Remove bolts - A -.





- Pull Interior Temperature Sensor Fan (V42) - B - out of front A/C control head Climatronic Control Module (J255).

• When installing Interior Temperature Sensor Fan (V42), do not press on motor - C -, hold fan firmly at housing instead.

Center Outlet Temperature

- Switch off ignition.

- Remove the center console.

- Remove the compartment under the left instrument panel and the steering column support to the center tunnel.

- Disconnect connector - A -.





- Turn vent temperature sensor - B - approximately 90° in direction of arrow.

- Remove vent temperature sensor out of air guide.

• Depending on design of air duct, sensor may also be installed at different location in air duct.

Left/Right Rear Center Console Temperature

- Switch off ignition.

- Remove the rear center console cover. Refer to => 68 Removal and Installation.

- Disconnect connector from temperature sensor - A - or - B -.





- Rotate - A - (Left Rear Center Console Temperature Sensor (G311)) or - B - (Right Rear Center Console Temperature Sensor (G312)) approximately 90° in direction of arrow.

- Remove appropriate temperature sensor from air guide.

• Left Rear Center Console Temperature Sensor (G311) and Right Rear Center Console Temperature Sensor (G312) are installed only on vehicles with Rear A/C Control Head (Climatronic) (E265) (optional equipment). On vehicles without Rear A/C Control Head (Climatronic) (E265), openings in air guide are sealed with plugs.

• Observe connector arrangement to Left Rear Center Console Temperature Sensor (G311) and Right Rear Center Console Temperature Sensor (G312) and mark them if necessary to avoid possible interchange.

• If the correct connector pin assignment is not certain, disconnect a connector for example from a temperature sensor and check the DTC memory for the Rear A/C Control Head (Climatronic) (E265) vehicle diagnosis, testing and information system VAS 5051 in the "Guided Fault Finding" function.