[ersin]

Bluetooth should definitely work in the cold. That's what it was designed for. After all, they don't call it bluetooth for nothing.

Seriously, fill up the tires with a bit more air then wait and see if the problems persist. Germans love their technology and this car is full of it. Little gremlins will show up every now and then. If they persist, or if you think it's a dangerous situation then take it in to your SA. I wish I could offer more encouragement, but I wouldn't worry about it too much.