I started my car at 5:30 am and it was about 14 degrees out. While letting the car warm up I noticed the clock display wasn't working. Didn't think much of it, thought it was a blown fuse. The car warmed up and I take off, turned the heat on and now the fan doesn't work. I restarted the car at a red light and still no heat. After 15 minutes of driving, the clock works again and so does the heater fan. Does anyone know what happened? I searched, but no results.