Rear Hatch lock actuator problems - Nissan Armada Forum: Armada & Infiniti QX56 Forums
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post #1 of 78 Old 04-15-2008, 08:36 PM Thread Starter
grogzero
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Rear Hatch lock actuator problems

Hi all, I've searched the forums and found a couple of hints at this problem but no solution. My 04 Armada is keeping me locked out of the back. I guess now that the brake judder problem has gone on vacation it's time for electrical fun and games. The problem appears to be in the door lock actuator for the rear lift gate. The problem manifested slowly, over time missing only occasionally on the unlock/engage handle for the rear door. Now it does it constantly.

I can crawl into the back and push the little emergency access lever to the bottom in the rear door access panel and then open the door from outside but this gets somewhat more challenging when the car is full of groceries or plants or dogs and kids.

The rear door latch is tight and not the problem. The door locks OK but the door lock actuator isn't pulling the lever down far enough each time. I took the door panel off and lubricated all the parts I could find. This fixed the problem for about a month. I would replace the electrical actuator but I can't find a part number for it or a replacement on the 'net. I guess I could try and pull the thing out and open it up to lubricate the guts.

Anyone else have this problem? Oh yeah, the rear door glass wouldn't open either but that was because the cable clip was detached from the lock. I think it's a result of the door lock being semi-disengaged when the glass was opened.

Thanks for any input (and great forum BTW)

GZ
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post #2 of 78 Old 04-15-2008, 09:52 PM
cruciangeneral
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I had that problem. so what i would do is lift the rear glass lever first and then the lift the liftgate lever and it would open. It beats jumping in the back and pushing the emergency latch down which i did for a while myself. But mines havent done that in awhile thank God. so try the glass liftgate lever first then lift the liftgate lever after. Let m know if it works for u.
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post #3 of 78 Old 04-15-2008, 11:35 PM
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post #4 of 78 Old 04-16-2008, 10:52 AM Thread Starter
grogzero
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I tried the glass lever first just a few minutes ago and it didnt' work either. Thanks for the suggestion though. I was able to get it open by locking and unlocking the car five or six times. It's a little irritating. I wonder if I used the wrong lubricant. I had some silicone lube for the treadmill that I put on it. It's supposed to be good for stuff like bicycle chains and lawnmower wheels (if you can beleive the little pictures on the can). I'm going to open it all up again and spray it with something different.

GZ
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post #5 of 78 Old 04-19-2008, 03:54 PM Thread Starter
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I pulled it all apart and the back door glass lock was disconnected. What is happening is that the electrical actuator isn't pulling the lock lever all the way down. It's stopping about 15% short of where it needs to be. This puts the rear door glass lever in between the swing position and the unlock position--which happens to be a hard place. So when you try to open the back door glass when the lock is 15% short of where it needs to be, sometimes it pops into the open position but in my case the little plastic clip popped out of the lever and left the glass stuck in the locked position.

So now on to the real problem. My back door lock actuator isn't able to pull the lever down 100% into the unlocked position. Even with the electrical actuator taken out of the system with no load on it the plastic lever is hit-or-miss on completing the unlock swing. The unit is sonic welded and appears to be maintenance free. So I want to replace this part but I can't find it. The part number on the actuator is:

905507S000
0892068-A
B/D ACTR
03 09 26 12V

Anyone know where I can find this online? Thanks.

GZ
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post #6 of 78 Old 04-24-2008, 03:50 AM
mich05
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Quote:
Originally Posted by grogzero
Hi all, I've searched the forums and found a couple of hints at this problem but no solution. My 04 Armada is keeping me locked out of the back. I guess now that the brake judder problem has gone on vacation it's time for electrical fun and games. The problem appears to be in the door lock actuator for the rear lift gate. The problem manifested slowly, over time missing only occasionally on the unlock/engage handle for the rear door. Now it does it constantly.

I can crawl into the back and push the little emergency access lever to the bottom in the rear door access panel and then open the door from outside but this gets somewhat more challenging when the car is full of groceries or plants or dogs and kids.

The rear door latch is tight and not the problem. The door locks OK but the door lock actuator isn't pulling the lever down far enough each time. I took the door panel off and lubricated all the parts I could find. This fixed the problem for about a month. I would replace the electrical actuator but I can't find a part number for it or a replacement on the 'net. I guess I could try and pull the thing out and open it up to lubricate the guts.

Anyone else have this problem? Oh yeah, the rear door glass wouldn't open either but that was because the cable clip was detached from the lock. I think it's a result of the door lock being semi-disengaged when the glass was opened.

Thanks for any input (and great forum BTW)

GZ
Yes my 2004 had bad sensors in the rear hatch twice now since 2004. The motor worked fine. It would not close or when it did close then it wouldn't open..
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post #7 of 78 Old 12-26-2008, 11:30 PM
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Howdy, folks. I'm having the *EXACT* same problem as Grogzero did. Started a week ago, when the hatch would refuse to open. I could pop the rear glass open, and that alone would "loosen" up the hatch so that it would unlock. today, when I tried to open the glass, it had some resistance, then I heard a "pop" sound. Doh.

Ended up having to crawl in and move the little white plastic locking lever from inside, as Grogzero described. Now I can open the rear hatch, but it requires crawling in each time. And the rear glass seems to be permanently locked.

Any advice would be greatly appreciated. Anyone have any guides/DIYs/step-by-steps on how to take the rear hatch apart? part #s?

Grazie,

--Dennis
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post #8 of 78 Old 12-27-2008, 07:42 AM
madafan
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Garage
I too am having that exact ame issue! The cold weather seems to have the most effect on the lcok. Now that it is not freezing cold the hatch seems to unlock OK but the glass will not open any more.


Steve

04 Silver SE

Current mods: QX56 rims, running board lights, billet grilles, stainless side moldings, CF Exterior Pillars, interior LEDS, CF console and door handles, bug deflector, HALO Projector Headlights, Pioneer AVIC F700BT, Pioneer Amps, RE Audio Sub in custom enclosure, 2* timing advance, CAI, and Flowmaster dual exhaust
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post #9 of 78 Old 12-28-2008, 03:33 PM Thread Starter
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Hi guys, I did manage to fix the problem. I removed the actuator from the door, drilled a small hole in the gear area of the actuator plastic (just large enough for the sprayer straw to fit in) and sprayed a couple of shots of lubricant into the gear section. I connected the actuator to the wiring harness and ran through a series of lock/unlock pushes from the driver's door lock switch. I squirted a couple more shots into the hole for good measure and covered the hole with a small square of tape.

I put everything back together and it hasn't acted up since then. I didn't post back here right away because I wasn't sure the problem was fixed. It's been long enough now that I can say it's a mostly successful fix--8 months without a lock-out.

The lubricant I used was either liquid wrench or silicone spray.
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post #10 of 78 Old 01-05-2009, 05:20 PM
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can you post pictures of what you did because I have this problem all the time and it is quite irritating. I also am not able to open the glass as the cable has come off again. Thanks.

2006 Galaxy Armada SE 4x4, Tow package, DVD system

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