I had to take my C-Max in today for service when the check engine light came on. The code according to the ScanGauge is P0456 (evap emission system leak?). Hopefully it's not too serious. The car seemed to be operating normally. I had to leave the car and they will look at it in the morning. I found out while I was there that the MFT 3.5.1 upgrade is now available. This will be good news to anyone with a C-Max who has problems with the original version of MFT. Mine goes blank from time to time, or freezes. It also has problems making calls with my iPhone every once in a while. MFT 3.5.1 also has a nice power flow screen overlaid on an image of the car. If your engine is on, it will also list the reason (low charge, engine warm up, etc). I'm also getting an issue fixed that I have had with my hands-free lift gate. Sometimes (usually when the car is locked) it takes 2 kicks to open instead of 1. Here is the TSB for the fix if anyone else is having this problem: TSB 13-5-6 2013 C-MAX Hands Free LiftgateI'll report back with the results.