Took my Wife's 2006 650 convertible in for its final service under warranty last week to BMW of Pembroke Pines, FL. Car was indicating the need for a brake fluid flush and micro filter change. I asked my service advisor, David Bushing, to have the techs give it a good going over, as I knew the warranty was about up. He researched the car, and said, "Yes, the Warranty expires at midnight." He then proceeded to try to sell me a 2 year extension to the warranty agreement for about $2200, which I passed on. The car was ready about six hours later. He told me that "All looked good", and I took the car a few miles to my residence. The next morning, I started the car up at 6 am, noting it seemed labored to start. Drove it the mile to my office and parked it. Came out at noon to go to lunch, and it barely started. I noted the clock was all zeros, and the car was very difficult to steer (adaptive steering is electrically powered), so I drove it back to the dealer, and spoke with David. He went out to the car, and couldn't get it to start. As the car was now out of warranty, David told me "He'd do what he could", which turned out to be a discount from about $525 for a new battery, installed, to $400.15. How does BMW NA do this? How'd they throw the switch? Satellite downlink? Should I have put aluminum foil around my Radio antenna? Not weeks or days out of warranty, but twelve hours! I'm going to try to get relief from NA. Will update on how it went.