I'm wondering if I have a shorted relay or module. Last Friday I discovered I had a dead battery. I went to a interstate battery shop where I purchased a battery to only inherit more problems. While I was changing out the battery, the kid at the store plugged a device into my OBD2 port with out my permission. This device was designed to trick a cars computer into thinking there is still a battery in the car so you wouldn't have to reset your cars radio settings...... Like I would care? When I finished installing the battery the car alarm was going off, I got every warning message BMW has to offer, none of my windows, key fob, door locks would work. It took me 2 hours of trouble shooting to finally find that the OBD fuse was blown and I reset the car by hold both terminals together (not attached to the battery) to drain all the capacitors on the car. I had to crawl over the seats into the trunk and manually open the hatch. It was a nightmare. I was furious! After everything was done the car worked fine. However by coincidence today I'm having this issue....