It has unreliable electrons --- all par for course for a German car. Good luck!
edit: This reminds me of funny thing I saw at an autocross once. A Ferrari 360 driver was doing donuts or something else stupid, and stalled his car. He couldn't start it up again, so he got out, and, just like fixing a stubborn laser printer, opened the engine compartment, and slammed it shut. He got back in, and the car started right up. Apparently, for his car, that's kind of SOP.