I keep my 500 POP in the garage, but it was plenty cold last night (down to 15 outside, slightly warmer inside). Starting this morning was a little difficult, but it started. The "check engine" light came on. I did idle for a minute to get the juices flowing just like I do when I start it the first time each day. I figured it wasn't the battery because it had its own light. The problem was, while driving, the car was not accelerating well, and the indicator telling me to "shift" was not coming on. I was able to shift okay, but the car was definitely not going fast. Naturally I HAD to be somewhere and eventually got there. After I had done my business, and the car had been parked outside in the sun, I was contemplating calling the shop to see if I could hobble over there immediately. Instead, I started her up, everything was fine. The car is running normal now, the SHIFT notification is working and the acceleration is fine. Of course the "check engine" light is still on, but with the car running fine again, I'm thinking now the only problem is the Mussolini effect (something WAS wrong, but the shop won't be able to find the trouble). I expect the "check engine" light to go off in a day or so. Can cold affect the drive train like that? Or maybe it was something I did like go in reverse while putting on the brake? Anyone else have trouble like this ?