My 6 series is turning off when it gets hot. It trurned off on my in the middle of the highway I had to tow it to my mechanic. He put it on his computer and couldn't find anything wrong with it and reset the computer. It's been in the garage cause I don't drive it in the snow, has anyone experieced this problem or can anyone tell me what's going on? I love the car and would hate to get rid of it.