Anyone else had pan roof open on its own?

[Ribbs27]

Good evening,

After leaving my 2014 E400 with pan roof in the work car park during todays storms I was horrified to return to my car this evening and find all 4 windows down and the roof open......as you can probably imagine the interior is drenched:-(

Has this ever happened to anyone else? Its going back to the dealer on Weds but worried it'll happen again.

Very unimpressed!

[Ribbs27]

I don't think it would be possible to accidentally hold the unlock button long enough to open all 4 windows, it requires a fairly deliberate action.....its awkward to do when you want to do it! I carry the keys in my hand (I hate things in my trouser pockets!) and leave them on my desk all day......I just cannot imagine it would be possible to depress the key accidentally for a sustained period.