^+1 this.High pitched whine at that temperature is the grill shutter servo motors. Tomorrow morning when you start your car (because I'm sure it will be that cold again) immediately run to the front and look through your grill and you'll likely see the sound coincides with the movement of the grill shutters.
Wow I get it every time it's about 5°F or colder. Only first thing in the morning though.^+1 this.
However, for me, it didn't happen only twice in the life of the car. I had wash the car before the night and in the morning it was cold. It never happened to my car even when it was -31°C outside (-24°F).
Yes. Either that 5 minutes was exaggerated or he has a completely different issue. You can 100% prove it is or isn't the grill shutters by watching them move and how the noise coincides exactly with their movement. I've 100% proven it on my own car anyway.Mine does this on very cold mornings as well. The consensus is grill shutters but I don't think anyone has been able to 100% prove it. It just makes the most sense. It usually doesn't last longer than a minute tops. Not 5 by any means though.