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-   -   1999 C280 external air temperature sensor (http://www.peachparts.com/shopforum/tech-help/241047-1999-c280-external-air-temperature-sensor.html)

vsnyder 12-24-2008 04:08 PM
1999 C280 external air temperature sensor
 
Where is the external air temperature sensor on 1999 C280?

What color wires lead to it? It's not shown on the wiring diagrams I have for the A/C.

The climate control diagnostics report the external air temperature sensor as OPEN. The temperature indicator below the speedometer reports -36F.

The heater doesn't work unless the temperature is set to HI, one step above 92. I think the reason is that the external air temperature sensor is defective or disconnected.

mbdoc 12-29-2008 08:21 AM
In the front bumber on the drivers side.

Has a green wire & a brown wire.


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