Anybody have a good understanding of the electrical door lock system in
an 89 XJ40?
I (personally) installed new front door handles a couple of years ago
when the passenger door handle started feeling like it might be
My electric door locks started misbehaving a few months back, going "out
of sync" occasionally where some doors would lock/unlock when the key is
turned and some wouldn't, etc. Recently the driver door lock stopped
unlocking the door when the key was turned in the lock; I had to use the
passenger door keylock to unlock the doors, and to lock the doors I had
to either reach across and push the passenger side lock knob down or
walk around to use the key on the passenger side. The lock panic switch
on the dash stopped working at some point, but I rarely used it so I'm
not sure when.
I had the car in the shop this week for other work and I asked them to
look at the driver side lock, since it's a pain to have to walk around
to the passenger side to unlock the door... they disassembled the door
and said a worn lock lever was causing the problem, and by using some
parts I had left over from my prior handle replacement, they were able
to repair that lock so that the drivers door lock can now be used to
unlock the car (unlocks all 4 doors). Apparently I must have used the
old lever when I replaced the drivers door handle.
BUT, now when the driver door is locked with the key, the rest of the
doors remain unlocked, so I still have to either stretch across the car
to push the lock knob down or walk around and use the passenger door to
lock the rest of the car doors. So, the shop only fixed a part of my
problem. The switch on the dash still will not lock or unlock the doors.
I can hear a faint click in the forward area of the passenger door when
I attempt to lock the doors using the driver's side lock.
Any ideas as to what the problem is? Is there a relay or solenoid in the
front passenger door that is failing (ie, a relay actuated by the driver
side lock but not by the passenger side lock)? Is the control for all 4
door locks located in the front passenger door? Or what? ...ie, how are
the door locks supposed to work?