Power door lock problem 2000 expedition

[brewrich]

Having an issue unlocking the doors when the weather is very cold, they unlock manually so arent frozen, i can see them move a bit but not all the way up. Once i drive for 15 mins, they work fine, this only happens in cold weather (-10c) any ideas??

 

[Thermo]

Lock solenoid is starting to go. Replace the solenoid on the side in question and then go from there.

 

[brewrich]

it is all four doors

 

[Thermo]

If it is all 4 doors, then you are having a problem with the relays inside the dash. If you remove the radio, you will see 3 relays lined up side by side (to the left of the radio as I recall). 2 of those relays need to be changed out as they are getting high resistances in them. I don't recall which ones are for the unlock feature (one does the driver's front door only, the other does all the other doors, the third relay locks all the doors).

 

[brewrich]

Thanks, will check that out... what confuses me is it only happens in very cold weather?!?

 

[walnuts4x4]

hmmm thought I was the only one... I'm just too lazy to fix it....lol

 

[Thermo]

Colder weather, the metal parts inside the relay have tighter tolerances, therefore don't move as easy. If there is any lubricant used inside the relay to help it move easier, the lubricant will get thicker with temperature, leading to more force needed to move the relay. There is a number of things that can cause the relay to operate funny at lower temperatures.

 

[tallsville]

sorry to jack thread but thermo. my passenger rear doesn't unlock with others. when you hit the button on door or remote the lock wiggles but doesnt pop up. what do i do to fix this. TIA

 

[Thermo]

tallsville, yours is definitely a lock solenoid. You will need to run to the auto parts store, get a new solenoid for the rear door (different than the front door ones) and then remove the door panel. From there, you will need a T-20(?) torx bit to remove the old solenoid and then the new one slide right in. Not that hard of a thing to do. Just a little cramped if you have big hands.

 

[DR3W]

Mine do that but all day everyday in any temp!!

 

[tallsville]

thanks thermo. sounds like i get a project next weekend.

 

[abnranger67]

Hey guys my truck was stolen a few years ago. They used a screw driver and pried the door lock (where I insert the key) out of the hole. I can still lock and unlock the door, but only with the remote or the keypad. What are my options? I still want to be able to use the keypad and the remote to lock and unlock the doors. I hope I can just buy a new "lock" and of course have a separate key just for that lock.

 

[bedrck46]

also spray all the lock hardware with either wd40 or silicone spray I prefer silicone as it doesn't have the odor that wd40 has

 

[ExpeditionAndy]

Hey guys my truck was stolen a few years ago. They used a screw driver and pried the door lock (where I insert the key) out of the hole. I can still lock and unlock the door, but only with the remote or the keypad. What are my options? I still want to be able to use the keypad and the remote to lock and unlock the doors. I hope I can just buy a new "lock" and of course have a separate key just for that lock.

I think you should be able to get a new lock from the dealer and have it pinned to match your existing key.

 

[apocaigue]

Brewich what did you do to fix it if? Mine is doing the same thing.