Ouch. Best of luck to you on this one. I would suggest a call to BMWNA to see if they can push for some warranty help on your behalf. That being said, I would not hold my breath in anticipation of any help.

4 years ago I had a problem outside of warranty with a BMW dealer that essentially destroyed the motor on my 740IL, by dropping a motor cover clip into one of the exposed valves while doing a repair to the car. Engine was shot. Dealer claimed they did not do the damage and that the motor did the damage itself by hyrdolocking. Bottom line BMWNA did nothing for me other than saying they were sorry this happened and that they could not force a dealer to do anything for me. Yes, I ended up suing the dealer and settling out of court.

Good luck.

__________________
Scott

2011 BMW X5-35d
2009 Volkswagen Jetta Sportwagen TDI
1972 Mercedes 350 SL