Ambient temperature sensor?

2005 BMW 325
166,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BHAMDOC1973
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Can this sensor, if bad or cut affect engine temperature or cluster needle in any way?
Apr 15, 2025 at 1:53 PM
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JACOBANDNICKOLAS
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Hi,

If you are referring to the outside ambient air temperature sensor, no, it wouldn't affect the engine temperature or cluster gauge. The outside ambient temperature sensor is connected with a separate ground (analog ground) and a sensor line (analog positive) to the instrument cluster and functions in an on/off every minute.

What is happening with the vehicle? Are you having an overheating issue?

Let us know.

Take care,

Joe
Apr 15, 2025 at 6:24 PM
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BHAMDOC1973
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turned out one of the upper hoses going to the expansion tank wasn't fully in and leaking. Thanks
Apr 18, 2025 at 11:38 AM
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STRAILER
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JACOBANDNICKOLAS is one of our best! Glad you could get it fixed, thanks for letting us know.
Apr 21, 2025 at 9:36 AM