How can you fix the lock on a 1989 BMW convertible that is stuck down and the key will not work to open it?

Start with the electric motor. Use a jumper wire on the positive wire of the motor and a hot wire. Does it work? If so, then you have to test the wiring harness back to the relay/fuse, the activation...

Lift passenger side handle, insert door-key, turn to unlock and then turn a little harder, this will activate a lever which will bypass the deadlocks.

Either destroy the lock or pick it using a bobby-pin and screwdriver

there are some keys out there...Sorry, absolutely not.

Good question. If it is stuck because you spilled water or something on it, turn it upside down and let it dry out. That usually works for me, but this time two keys remained stuck, and it was only...