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Old 11-28-2012, 04:53 PM   #2
BMWCaptain
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Join Date: Sep 2011
Location: TEXAS - Where I give Real World advice and don't just criticize others. People here need to RESPECT other's opinions!
Posts: 1,586
My Ride: 03 325iT SportWagon
Check you temp sensor in the lower hose. If you disconnect it when the ac is on, it should cause your fan to go into high speed.

There is no seperate relay. It is all contained in the fan controller attached to the fan itself.
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