Hello, I noticed the following for the first time today: during the night we had minus temperatures and the car was frozen. After driving about 30 km to work (motorway), I took a kind of crackling from the glass roof as soon as you drove over uneven places on the road. Hard to describe, but a crackling comes to the noise closest – it is no flap or similar. At the beginning of the journey the noise was not there, only after the 30 km, when the car partly thawed. D The roof was partly covered with frost when I parked the car in the underground garage. Let’s see if the noise is gone when the car is frost-free again and I’m going home tonight. Did anyone experience something like that?