M3 locked the doors by itself???
I have a 03 M3 BMW, this morning I started the car before work to let it warm up. I Shut the door on the car and went inside when I come back out to leave the door was locked. I made sure before I got out of the car that the doors were unlocked. Now the car is running with the only key I have in the ignition..This is the second BMW I have had where the doors have locked on there own when the key was in the car. One time I even seen the door lock on its own when no one was around the car. Does any one know why this is happening???