I have a very similar expereince. I was driving and started seeing a blinking wrench stating check manual. I checked the manual and the error said DriveTrain Fault. I then drove to the dealer and while I was diving, I get a red error message telling me to pull over safley. I stopped and then started the car again and was able to limp to the dealer. That was sunday night. It is now Friday and I still don't have the car. The dealer told me it is a transmission module and the mechanic needed to order the part, then drop the trans to install the part. It is supposed to be ready today, we'll see. It sounds like this issue might not be specific to me, maybe a mass issue with this module? I started seeing messages about Hill start and traction control not working before the pull over saftly message. Not a good feeling to have a car with 2900 miles spend 5 days in the shop....