I found out the hard way. But then realised that the car gave me a discreet hint a few months ago and I didnt take notice of it. When the battery is running low, while your exiting the vehicle at your arrived destination and open the door, to get out and lock, the windows get stuck in up position all the way to the point where you can not shut door as it will break the glass if you do on frameless cars like e92.. I had to get in, put key in ignition, put window down, then back up and then it allowed me to push door in and lock it. Hapenned twice. I thought it was a system glitch. 2 months later my battery died while driving and went into psycho mode with lights and bulbs flashing etc. And then I realised a month later that the window not adjusting it self a few months ago when entering and exiting the vehicle was indeed a sign. What a car!
