Help please!!! I am at the end of my rope. I have a 1990 525 with door lock issuses. The locks cycle when I either lock or unlock the doors, sometimes unlocking the car when I'm not around. The passenger side door lock tumbler cannot be actuated with the key and the trunk does not unlock with the central locking, only with the key. I have checked the wiring on the trunk arm and it visably looks fine. I have searched your arcives and have found mention of switches on the locks but am unable to locate them. I first noticed a problem with the trunk not unlocking the rest of the locks but it quickly progressed to the entire system. Where do I locate the switch? How can I test it? I have tried to syncronize the locks with your website instructions but it did not work, nor would the passenger door open with the emergency instructions. Any help is greatly appreciated as I have already started thinking of burning the car to the ground