Originally Posted by juddholland
I was told that with comfort access or keyless start, if someone steals your BMW while it's running and you have the key, the car will power down and lock out the thief from accessing any of the electronics after it's been driven 50 feet from the key.
Utter nonsense. There is no electronic detection system for thieves. Once started, the car will run as far and as long without the key inside as the fuel holds out.