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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > A/C comes on by itself?

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      05-28-2010, 01:47 AM   #1
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Drives: E90 manual 335i
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A/C comes on by itself?

I was driving tonight and I noticed the windshield fogging up a bit. I looked down to see that the a/c has turned itself on, to the weakest setting of 1 bar. I turned it off. I thought that my hand may have hit the button while shifting.

I parked the car to run errands and come back an hour or so later. The same thing happened again.

In both instances, it happened only once. After I turned off the a/c, it never came on again for the duration of the drive.

Has this happened to anyone before?

As luck would have it, I'm at 57,xxx miles now and warranty is expired.
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      05-28-2010, 01:01 PM   #2
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Drives: E90 330i
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Location: Arcadia, California

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check if your temperature knob is stuck. it happened to me once.
1. E90 325i/328i/330i Eisenmann Race Exhaust 2 x 76mm (Used for 30000 miles) $680 OBO
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