My update failed too. Did any of you get the "Software update required. Schedule service" message, on the screen behind the steering wheel? The update installed, but it broke my car. I can drive it, but there is no TACC or anything. Probably no automatic breaking either. This is at least the 4th time I've had this problem with an update. About a year ago they wouldn't push any new firmware to me. They just said to bring it in and gave me an $1800 estimate. I thought **** that and just waited for the next update. The next update fixed everything. It sucks not having at least TACC though. I'm glad I don't have any road trips coming up.