Outside Air Sensor 122 F - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 12-28-2005, 01:13 PM
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Question Outside Air Sensor 122 F

Yesterday my outside temperature indicated 65 F and the next time I looked down it said 122 F. All of the information I have looked at usually shows a unusually low temperature like - 40 F. The sensor does not show any exterior damage. Do I just replace the sensor ?
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#2 (permalink) Old 12-28-2005, 08:56 PM
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Check to see if there is any dirt in the connection. Check your wiring as well. If everything seems fine, I would recommend that you replace the sensor.

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#3 (permalink) Old 12-28-2005, 09:54 PM
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Sounds like the sensor is shorted. As said above, try pulling it out, check for any damaged and or dirty connections, and reinsert. Replacing the sensor should fix the problem.

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#4 (permalink) Old 12-29-2005, 10:17 AM
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Thanks for the information. I will take it apart, clean the terminals and reassemble it today.
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#5 (permalink) Old 01-02-2006, 10:28 AM
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I removed the sensor and found some water at the pin connectors. I dried it out, cleaned the pins and reasembled. With an outside temperature of about 65, it started indicating at 80 and over about 5 minutes climed back to the 122. I cleaned again but got the same results.

I ressembled everything but left the sensor out of the connector and covered it with electrical tape. Bought a new sensor for $30 at the local BMW dealer. They said that this sensor is a common falure.

I removed the tape, replaced the sensor and tested it in parking lot and it worked fine. Thanks for the help.

Note that the sensor can be removed and replaced without removing the fender well behind the fog light. Its a shame that some repair shops have charged above $100 for the sensor replacment.

Thanks again.
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