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2006 BMW M5 Question: After winter storage took my 2006 M5 out and quickly had COG &Transmission fail!

 

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Randy S., Lewiston, NY, April 14, 2012, 14:50
 Rookie

In drive SMG would not engage...engine would just rev.Suddenly it would catch and lurch forward.Then it would clear for several miles...then reappear again.Changed battery as it was suggested by dealer that 6 yr.old battery may not power all the onboard electronics.Red "COG" is now back with a vengeance
Yesterday RED COG again, would not engage in drive or reverse and then stalled and would not restart[middle of rush hour intersection]5 minutes later it started and ran without problems.What is going on?

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