Check your door lock for tampering. You probably never use it and would otherwise not look at it closely. I read previously that thieves can open up the windows and sun roof with a screwdriver hammerd into the lock and then turning it like a key. They can't steal the car, but do take anything of value they find within.

 

This happened one day while I actually washing the car. I was like WTF! Then I took my keys out my pocket, and it stopped. I really wish BMW had incorprated the ability to turn this, and the trunk auto open off on the i-Drive. Glad nothing happened to yor car.

I think the cop's just wanted doughnut!

 

In my E39, I'll find some of the windows and/or sunroof partially rolled down occasionally. It is actually quite easy to do with the key in your pocket!

 

This happened to me 4 times, in my own garage, while car was parked in front of my house, in a mall parking lot and the last time in the dealership whose service rep was insisting that there is nothing wrong with my car! I ended up using the "exchange program" and got a new car but at the time they blamed it on a faulty relay. But rest assured that its not you, or the buttons on the key and the rest of the lame bull crap they will try to feed you. Just remind them that if something happens to your car, if it is vandalized, stolen etc., you are holding them responsible.
Good luck.

 

This has happened to me once about 1 year ago. I also came off an aiplane and walked out to the parking garage and when I unlocked my car doors the radio came on real loud. My wife stated that it was my car and I didn't beleive her until we got closer. Neither of these have happened to me after reporting these probs and getting software updates. My car productions was 4/04. I also remember that tere were other people that posted this problem about 8-10 months ago.

 

I have experienced this problem on more than one occasion. Including the idrive resets, radio NOT turning off, etc.

THey are replacing my car as of yesterday. It has been to the dealer 3 times and I have only had it 2 months.

 

My trunk opened "by itself" twice. I blamed myself for sitting on the key in my back pocket. Now it is attached to my belt and it hasn't happened since but I'll mention it to the service deparment to check the relays!

 

They missed an opportunity to charge you with wasting Police time !!!

(ho ho only kidding)

Seriously though... this is another one of those "I thought i was going mad moments".. i have returned to my car to find the boot, (trunk), open .. and i never carry my keys in my trouser pocket.. at the time i put it down to personal stupidity.. maybe not...

Also have had radio unable to re-tune or turn off and on another occasion i-drive screen frozen in comms menu.. had to apply the BM version of the old Atl-Ctrl-Del Microsoft car reboot technique.. power off power on to clear those down !

David

 

Same here. Happens with the trunk and alarm too. Especially if you lean against a counter top or something.

 

I think when the window open by pressing the truck button, if you didn't unlock the door, the car's alarm will retain active, that mean the motion sensor still ON. try to put your hand through the window and the alarm will start making the noice. This function is very nice on summer when you want to open your window before getting your car, but not very useful anymore on the new BMW Because you can program the AC To turn on automatically.