AC Fan Stays On

2002 BMW 540I
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JAMES F
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2002 BMW 540i, recently the AC Fan just starts up and keeps running when car is cool and everything is off?

Once I had it parked at the airport and when I returned the AC Fan must have kept running and drained out the battery completely.
Aug 3, 2011 at 10:00 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Check and test the Auxiliary Fan Normal Speed Relay (K21)Right rear of engine compartment.

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Aug 3, 2011 at 10:11 PM
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JAMES F
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Thanks for the help, really appreciate the help...
Aug 4, 2011 at 6:58 PM
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