GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

2008 GL450 climate control won't work when ambient sensor says 185°f

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Old 07-08-2014, 08:58 PM
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2008 gl450
2008 GL450 climate control won't work when ambient sensor says 185°f

While driving home with the ac on The ambient temperature reading went from 75f to 185f on the dash and the check engine light came on when this happen the fans automatically came on and caused the climate control not able to turn back on I thought it would of been the sensor problem located in the front bumper but i changed it and it still reads 185f.. my ac allways worked fine before this happend any suggestions I need help!
Old 07-08-2014, 11:10 PM
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alx
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Originally Posted by prezgully21
While driving home with the ac on The ambient temperature reading went from 75f to 185f on the dash and the check engine light came on when this happen the fans automatically came on and caused the climate control not able to turn back on I thought it would of been the sensor problem located in the front bumper but i changed it and it still reads 185f.. my ac allways worked fine before this happend any suggestions I need help!
185 means sensor is open or shorted. Check wiring.
Old 07-08-2014, 11:14 PM
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Can I trace and replace the sensor wire or it could be anything on the harness
Old 07-08-2014, 11:19 PM
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You will have to visually inspect harness.

If you have das you can get more detail as troubleshooting tree will guide you to the source of the problem.

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