Sunroof blowing up [Archive] - Bimmerfest - BMW Forums

: Sunroof blowing up

05-21-2010, 08:11 PM
has anyone heard of sunroof blowing up while driving with windows open?
I did some search on the net and found that there are occurrences of that on 3-series, but has anyone heard about it on e60?

I was driving on highway today with window slightly open and a guy in e39 pulls up next to me and points at my window. I closed it, but had no clue what he was talking about(80mph its hard to hear). We got stuck in traffic and he pulls up again and tells me that his sunroof blew up when he was driving with window open and sunroof closed and that its a known bimmer problem. He said it cost him $5500 to get it fixed and bmw wouldn't cover it.

Pretty scary story and drive with window slightly open very often.....

05-22-2010, 06:54 AM
I never heard of that.
It must have been a VERY loose mechanism. I know that I would NEVER spend $5500 to fix it. Either I would get it tightened at much less cost or silicone sealer it shut!!.

05-22-2010, 07:04 AM
blown up and glass shattered
i.e. check it out here (

05-22-2010, 07:43 AM
I thought "blown -up" meant that it went upwards. We have a crazy language.
It did seem to go upward - albeit smashed. It most likely is caused buy the combination of temp and pressure, but since this is tempered glass it is under great internal stress. If it had a small scratch, the other factors will put it over the edge. Either way it shouldnt cost $5500, and should be covered.
Did the paint get scratched??
Most cars have a small vent in the body to relieve pressures of door closing etc.

05-22-2010, 10:02 AM
Mine exploded with windows up and sunroof closed going 30 mph.

05-22-2010, 07:07 PM
yeah i've heard of this as well on the 3 series.

05-22-2010, 07:13 PM
Mine has not blown up and i have definitely heard a loud ass POP in cold mornings!

05-22-2010, 10:28 PM
Mine has not blown up and i have definitely heard a loud ass POP in cold mornings!

I thought my car was unique. Hasn't happened since it has been warm. But my car would make a very loud POP...sounded like somebody threw a rock at my car, yet I would be at a red light. Only happened after work. It was cold when I drove to work but would warm up during the day. It made me cringe the first couple of times it happened.