My 2005 Explorer door locks are making a screeching noise when they lock and unlock. It sounds like urnk. I recently had my whole back end repaired due to an accident so I am wondering if this is part of that problem or something else.

If it makes a weird screeching noise than it is possible the lock actuator has gone bad.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Check the door unlock relay located in the AUX relay box #2 .
Auxiliary Relay Box #2, 2 Door w/Electronics Group
Left rear of vehicle, above wheelwell Auxiliary Relay Box #2, 2 Door w/o Electronics Group
Left rear of vehicle, above wheelwell Auxiliary Relay Box #2, 4 Door w/Electronics Group
Left rear of vehicle, above wheelwell You need to take rear trim panel off to view this relay box. There is a seperate relay for lock

the lock actuator is going out. worse case scenario is you will have to lock it manually or replace the lock actuator inside the door panel. it may still be under warranty. call them and have the vin ready and they can look in their data base. if they prove to be unhelpful, please feel free to e-mail me and i will call. [email protected]

the door lock actuator is going bad.

Either 1) One of the door lock switches is stuck (the car is continuously trying to lock or unlock the doors, most likely in the "unlock" position); try to wiggle each door lock switch up and down (into the lock and then unlock position) to see if you can free the stuck switch. 2) More difficult to repair - the locking system's wiring harness has become damaged such that an exposed conductor is making contact with a metal part of the car (i.e. it's being grounded, which has the same effect as operating the door lock switch. Has any work been performed on this car recently, especially any door panels removed? Someone could have shot a screw through the wiring harness. If this is the nature of the problem, it may be a slow, tedious repair.

I have a 1999 Chrysler T&C 3.8 liter like yours and it sounds
like you are having the same the same problem I had.
Every time you hit the door unlock or lock button, it made a loud
buzz like you just missed a question on a game show. ;-)

It turned out the problem was the rear lift gate lock actuator. The part costs
about $40 from the dealer if I can recall correctly.

The repair involves: 1st removing the middle and rear seats to get
access from the inside to the rear gate
(obviously you will have to remove the seats from the side doors
since the rear gate won't open yet)

Remove the plastic inside rear gate panel and molding (phillips screws)
Once you remove the panel, you may see a way to manually
open the rear gate. As I recall, I think there was a access opening
covered from the inside with a black weather/insulation tape.
Carefully removing this out of the way gave access to a way to
manually open the gate, making the rest of the work easy.

Remove the electrical connector and the mounting bolts
to remove from the actuator. It is attached to the inside
rear gate with 2 or 3 bolts (10 mm?)

Remove the old one and replace the part, then put it all back
together, make sure you reconnect the electrical connector

Takes about an hour for the whole job (max)

Hope this helps,

Wes

the electric door lock actuators are failing replace the ones that are making the noise.

Check inside wiring by the driver's side door hinge. Remove the rubber boot and you will find broken wires. Make a splice and you are fixed!

The electric door actuators are bad/broken so they need to be replaced its a common problem