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How to Replace Door Lock Actuator 2002-10 Mercury Mountaineer
How to Replace Door Lock Actuator 2002-2005 Ford Explorer
Created on:
Tools used
Flat Blade Screwdriver
T27 Torx Driver
6mm Socket
7mm Socket
Ratchet
1. Removing the Door Panel
Pry off the door handle bezel
Pry up the window switch panel
Disconnect the window switch wiring harnesses
Remove the 7mm bolt in the door pull
Remove the 7mm bolt on the bottom of the door panel
Pry out the door panel
Lift the door panel up and off
Carefully peel off the water shield
2. Removing the Door Handle
Pry off the door lock rod from the yellow clip near the lock assembly
Lift the yellow clip on the interior door handle
Remove the 6mm bolt from the door handle
Slide the door handle forward
Push the latch cable off the door handle
3. Removing the Door Lock Assembly
Disconnect the door handle latch cable from the clips on the door
Remove the three T27 Torx bolts from the lock assembly
Lift the assembly up and disconnect the door handle rod from the yellow clip
Pull the assembly out from the door
Disconnect the two wiring harnesses from the assembly
4. Removing the Door Lock Actuator
Pry the tab on the actuator with a flat blade screwdriver
Slide the actuator off
5. Installing the Door Lock Actuator
Align the slots on the actuator with the slots on the assembly
Align the arm on the actuator with the hole on the assembly
Slide the actuator in place
6. Reinstalling the Door Lock Assembly
Connect the two harnesses to the actuator
Push the door handle lock rod into the yellow clip
Push the lock assembly into place
Tighten the three T27 Torx bolts into the latch
Push the bracket into place
Tighten the two T27 Torx bolts to the bracket
7. Reinstalling the Door Handle
Clip the latch cable to the door handle
Hold the lock button in the unlocked position
Push the lock rod into the yellow clip
Clip the door handle rod in the yellow clip near the assembly
Slide the door handle back
Tighten the 6mm bolt to the door handle
8. Reinstalling the Door Panel
Put the water shield into place
Lift the door panel into place
Push in the door panel clips
Insert the 7mm bolt to the bottom of the door panel
Insert the 7mm bolt in the door pull
Connect the window switch wiring harness
Push in the window switch panel
Push in the door handle bezel
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace a rear door lock actuator on this 2003 Mercury Mountaineer. It's the same part and similar process on these Mountaineers from 2002 to 2010 and it's the same years on the Ford Explorer. We show you on the driver side but the passenger side is a similar procedure. The items you'll need for this is a new rear door lock actuator from 1AAuto.com, a flat blade screwdriver, a 6mm and 7mm socket and ratchet and a T27 Torx bit.
Start off by prying out on the bottom of this panel and then pulling out to release the clips. Then slide it towards the front of the car and off the door handle. Now roll this panel out while pulling up on the front. Slide it forward and then just push the tab on this harness and disconnect it. Then remove this 7mm bolt and this 7mm bolt right here. Now lift your door panel up and out and your door panel's free. Peel back your water shield in this top corner and you can see Mike uses a razor blade to help separate the adhesive.
Now, using a flat blade screwdriver, just pry this clip open and then pull the door handle rod free. To give you more room while you're trying to remove the exterior door handle, we recommend you just lift up this yellow clip on the back of the interior door handle and pull your lock rod free. Remove the 6mm bolt underneath your interior door handle. Slide the door handle forward and just push this cable out and disconnect the cable. Then just pull the cable through your water shield.
Using a flat blade screwdriver, push in the tabs on this clip and pull the cable from the door. Then remove these three T27 bolts. We'll just fast-forward as Mike does that. Pull the door lock actuator towards the opening and then just lift up on this yellow clip and pull the rod free. Push the tabs on these harnesses to disconnect them.
With your assembly out, the actuator just slides on here, so take your screwdriver and just pry a little bit to make sure it's moving some. There's actually a tab right in, put your screwdriver in and twist. While you're twisting, work the actuator off. Actually if you lock this back up, it gives you a little extra room and the actuator comes right off.
There's a tab here and a tab here on the actuator, so they go into this slot and into this slot. Then there's an arm here. You have to make sure that goes into here, so put it into place and start sliding it on. Then make sure that your actuator goes into where it should here. Let's see here, I don't have it down quite far enough to push it down on there. Make sure that arm's going in and squeeze it on and slide it on.
Make sure that's open and I'm going to reconnect my harnesses here. The grey one goes here and this one goes right here. Put this in the door and then take my door handle rod or my lock rod actually, oops, I got to put it into the door and lock it in place. Bring your assembly up, take, carefully, outside door handle rod, and make sure it doesn't get caught up in there. Let's see. There we go. We'll fast-forward as Mike finishes replacing those bolts and then tightens them up.
Pull the cable back through your water shield. Then take your interior door handle and reclip the cable into the handle. Then just push that cable back into the bracket and then push in the tabs on the door handle and then slide the door handle back. We'll just fast-forward as Mike replaces that 6mm bolt and tightens it up.
All right so you want to make sure that your door is in the unlocked position. Back is locked. This way is unlocked. Then you want to hold your lock and unlock switch. Basically, here because that's unlocked, that's locked so hold it in the unlocked position. Pull it forward, make sure it's unlocked, put into your clip, and you can see and just lock the clip down. Reclip the door handle rod and just close the yellow clip over it.
Now push your water shield back into place. The door handle is held in by all these hooks, so if you take the water shield for any reason just make sure that everything is lined up so the hooks can go in easily. You can actually hook the bottom ones on first, just push the panel up, you may have to move it up a little bit, make sure it goes against the door all the way, and slide it down. Now replace those two 7mm bolts and tighten them up. The top one helps if you feed it back into place with an extension. Reconnect the harness and this tab slides in first. Take this panel and just slide it behind your door handle. Push those tabs back into place. Push the clips back in on the front.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Tools used
T27 Torx Driver
5.5mm Socket
T27 Torx Socket
Trim Tool Set
Pocket Screwdriver
BSS00196
In Stock
Product Reviews
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Highly satisfied with Service
Larry
February 5, 2019
Ordered these door lock actuators for my ford and they work flawlessly. Was very satisfied with the quality, prompt service of receiving the items and the video of how to install them. I would highly recommend them for your automotive needs.
Lock actuators
J
April 27, 2020
Great service and the parts were per spec. I saved a lot of money doing it myself. Thanks 1aauto
Awesome
Wilfred
December 17, 2022
Worked like as advertised. Any DIYer can do it and the best part, it arrived quickly. Price was great too.
Great part and installation video
Michelle
July 22, 2023
Exactly what I needed. Video was a huge help with a quick link on the product package itself. Thank you.
2010 Explorer Door Lock Actuator
Tim
February 26, 2024
Great product and great help videos. I self installed this in the fall of 2023, on my 2010 Explorer (had approx 203k miles at the time). Still working like a charm, and hopefully I'll get another 200k miles out of this one! ??
Customer Q&A
Is this part for driver and passenger side?February 26, 2024
John D
10
Yes. I installed the set on my Explorer. Both sides.
February 26, 2024
Jacob B
10
There are two actuators in the package. One actuator will work on the driver side, and the other on the passenger side. They are not interchangeable.
February 26, 2024
Tim G
10
Yes, this listing is for the driver and passenger sides of the vehicle.
February 26, 2024
Meghan R
Customer service
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Mercury is a registered trademark of Ford Motor Company. 1A Auto is not affiliated with or sponsored by Mercury or Ford Motor Company.See all trademarks.
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