NHTSA Complaint #11520456 — 2017 BUICK ENVISION

I had just left the driveway at my in-laws house, which is approx. an hour and 45 minutes from my home. Within moments, randomly, the sun roof popped open, as if someone had hit a remote. It would not close, and after trying for a bit, decided to drive home and we would address it there. When I hit the open road, the roof went the rest of the way open and then about two miles from the house, I starting choking on the smell of burning plastic. I immediately pulled over on to the shoulder of a side road, turning off the car. My husband was in a vehicle behind me and came over and we were both very concerned the vehicle was going to catch on fire. He tried to pull the fuse in the panel, but when we turned the vehicle back on, there was smoke coming from the sunroof motor area, and the smell was atrocious. The inside hood liner was very warm near the rear of the vehicle with the motor. At that point, we decided to call a tow truck, because it was obvious there was an electrical short. Because the sun roof was stuck open, we had to get a car cover to protect it from the rain coming in. The dealership investigated the next day, and confirmed there was an electrical short that was throwing high-voltage power in to the sunroof. It had melted the motor and wires around it, and had we gone any further, the voltage would have caused a more significant fire. They had to do significant repairs, costing $1400, as well as some clean-up of the interior to try and ensure we weren't continuing to breathe burnt-plastic fumes.