This would be (in order of likelihood) a burned-out unlock solenoid on the passenger door, a bad relay in the lock control box (what happens when you try it from the passenger side??) a broken wire in the wiring loom between the body and the door, or a bad lock switch on the driver door. Probably "Zilla-time", unless you are really handy rewinding solenoids and/or fixing small under-rated electronic circuits. Dave Swingle --- In dmcnews@xxxx, "Mike Allred" <mallred@xxxx> wrote: > I've just purchased a 1981 DeLorean and have a few problems I hope someone can help me with. > --- > I also have a problem with the door locks. Both doors will lock with the key from the drivers side but the passenger side will not unlock when you unlock the driver side door. >