How do you disable door locks on a 1991 BMW 5 series?

Answer 1

Not sure exactly what you mean, but this information could be helpful to you or others checking this question/answer. I left my headlights on all day once, so- of course- the battery died. With the manual doors locked and the battery dead, I couldn't get the doors to unlock! Everything manual on this car and the locks seem to, for some odd reason, be electrical. No worries, though! I figured out that if you turn the key in the driver's side door TOWARD the lock (rear of the car) and then back to the "unlock" position, the doors will finally unlock. The tricky part is getting the key to TURN at all! It will take some strength, but it is possible. Of course, be careful not to bend or break the key. Especially if you are like me and only have the ONE key (with no "clicker"). Sorry that I can't answer the "disable door locks" question, but hope this answer helps someone else that happens upon this question hoping for help in the Dead Battery, Locked Door Department.