Issue 2: When exiting the car, the iDrive stays on even after closing the door; manually turning off the radio doesn't turn off the iDrive. The only way this seems to turn off is by locking the door, which if you forget to do this runs the battery down. Have seen (ancient - 3+ years) posts on forums for other models saying it could be a Bluetooth issue (am going to test this with phones' bluetooth off). If it's a matter of proximity, this is still a bad deal: parked the car in my basement garage, left my key in its normal place in the kitchen, and noticed my Blackberry still flashing blue indicating it was still connected via Bluetooth to the car, which had not been locked. I locked it remotely from the kitchen & the BB stopped flashing blue, indicating to me the iDrive was thus shut down. Am not particularly good about locking the car when it's locked in the garage, so this is a concern when it comes to inadvertently draining the battery.