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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.