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      05-12-2012, 01:48 AM   #2
Mike Benvo
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Drives: 08 E90 M3 / 400whp Turbo 7
Join Date: Apr 2008
Location: SoCal

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1990 BMW 735i Turbo  [5.00]
2004 BMW M3  [0.00]
2008 BMW M3  [5.00]
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I've seen this happen before on an E60, it was a defective CCC unit. In your case, if it's not a wiring/power/ground problem, it's likely a defective unit.

The dealer should try an update, and if this fails, there is likely something else going on with the car.
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