We have a Premium Lux XT4. This may be a similar issue but we had a dead battery after the car sitting for a week. Seems as though the CUE system did not go off after doing a remote start and letting the car idle until the remote start timed out. I also experienced the CUE system not going off after turning off the car (maybe 3 times). The dealer did a service bulletin 1922121 and reprogrammed the Engine Control Module. No issues since. I think our issue is merely software related and we haven't taken it in to the dealer yet. We love the XT4. We've had other cars that have experienced more issues than this. I believe its the 'first year' bugs that have to be worked out. Always an issue with buying the first year model.