as soon as I got out of my neighborhood, a message pop up on the screen said "front motor temporary disengage" and by the time I got to work put it in park another massage popped up "vehicle may not restart, service is required ". Put in my service request and by lunch time the car was totally dead, the tow guy came by and said it's a 12v battery, but even with his back up battery he can't even reboot the car. After a week in service center, I got an email said that my front drive motor assy. have to be replace. My car been in service center for 3 weeks now and still waiting for parts, luckily they loan me a model X to drive back and forth to work.