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post #1 of 20 Old 05-05-2017, 12:41 PM Thread Starter
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Door won't unlock

Hello all.
Just purchased a 2009 Versa hatchback for my daughter. The back door will not open and I can't get it inspected and registered until I get it fixed. I took off the door panel and the lock and door open cables are working by the handle so the problem has to be with the latch where the door connects with the frame (not the hinge side). I live way up in northern Canada and we don't have a dealer here and the garage I took it to wasn't sure how to get the door open to fix it. I've looked through the forums and it usually comes to bringing it to the dealer but I don't have that option so I'm wondering if anyone has suggestions on how to get it open?

I might try taking the door off at the hinges but I'm not sure if that'll release anything and I might be worse off.

Any suggestions are greatly appreciated.
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post #2 of 20 Old 05-05-2017, 02:26 PM
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Originally Posted by Labrador View Post
Hello all.
Just purchased a 2009 Versa hatchback for my daughter. The back door will not open and I can't get it inspected and registered until I get it fixed. I took off the door panel and the lock and door open cables are working by the handle so the problem has to be with the latch where the door connects with the frame (not the hinge side). I live way up in northern Canada and we don't have a dealer here and the garage I took it to wasn't sure how to get the door open to fix it. I've looked through the forums and it usually comes to bringing it to the dealer but I don't have that option so I'm wondering if anyone has suggestions on how to get it open?

I might try taking the door off at the hinges but I'm not sure if that'll release anything and I might be worse off.

Any suggestions are greatly appreciated.
If you have a locksmith nearby, you might decide to give him or her a call and see if they can get it open. You might want to check your insurance policy to see if they cover a lock out event. Good luck
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post #3 of 20 Old 05-05-2017, 04:32 PM
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Originally Posted by Labrador View Post
The back door will not open and I can't get it inspected and registered until I get it fixed. ... I live way up in northern Canada ...
In Canada they check the doors before registering a used car with a valid title?
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post #4 of 20 Old 05-05-2017, 05:36 PM Thread Starter
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In Canada they check the doors before registering a used car with a valid title?
Yes, I was surprised by it too. Inspections are provincial so it may not be in all of Canada but it is in Newfoundland and Labrador.
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post #5 of 20 Old 05-05-2017, 05:47 PM Thread Starter
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Originally Posted by pimperell View Post
If you have a locksmith nearby, you might decide to give him or her a call and see if they can get it open. You might want to check your insurance policy to see if they cover a lock out event. Good luck
Thanks for the help but no locksmiths here and no lockout assistance through insurance. Good suggestions though.
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post #6 of 20 Old 05-05-2017, 09:50 PM
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One explanation for the door being stuck is the car was in a collision. An alignment check may reveal it. If it is a case, then a proper body shop may be able to straight the body.
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post #7 of 20 Old 05-06-2017, 07:49 AM
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If not tried yet you could have somebody with some weight lean into the back end of door very firmly (without damage of course) to relieve the door latch to pin pressure while again somebody inside works handle and unlock cables. Shoot some WD40 down on top of latch assembly and into any crevices and maybe some will soak in to do some good.

Past that the latch is screwed and you may end up with damage getting it loose. Take a long slot screwdriver or other driver rod and put on the latch assembly to shock it with hammer hits while again working the cables, you may impact the latch to pop unlatched.

Look close at your cable action, they may be working but not quite enough, as in overaction there may produce the desired result. I'll leave OP to guess at how far to go with that.

Study how the unlock mechanism works, on Ford Focus cars I found the unlock cable still worked but an odd problem to where on opening the door with the handle if the unlock tab was palmed by accident to lock at the same time then the latch seized up in both an unlock and lock condition at the same time. To get those loose you had to work the unlock cable BACK INTO the cable housing with visegrips on the cable itself to unseize the latch and then latch back to normal until somebody does it again. Comparing the working door cable movement amounts to the unworking one may give some insight there. You may find yourself yanking the other side door panel for learning.

If by some odd chance car was wrecked you don't straighten the body for that, you simply refit the door latching assemblies to suit the new condition. That can involve 50 different things, the brain being the main tool there. I have shimmed, washered, realigned, bent, and ground on many parts to get what I wanted there. They hope not necessary on most of them on the assembly line but sometimes a car has to be pulled out of sequence for special work when all the points-in-space do not quite line up there and one off work needed for that particular car.

You do what's needed to make it work and forever. Garages won't touch that type of work past a simple 'replace the part to fix' as there is no return on it.

Last edited by amc49; 05-06-2017 at 07:59 AM.
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post #8 of 20 Old 05-06-2017, 08:03 AM
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Has anybody checked the opposite door for operation yet? They often have a child lock provision up front driver side that stops both back doors from unlocking.

If nobody has tried yet simply unplug the latch harness and see if anything happens. If OP can figure out the motor electrical leads for lock and unlock then simply apply 12 volt power and ground to the two pins and then reverse the power, the unlock motor in the latch simply reverses polarity to work both ways. Could simply be a bad unlock circuit there. Voltmeter time.............

Last edited by amc49; 05-06-2017 at 08:16 AM.
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post #9 of 20 Old 05-06-2017, 04:48 PM Thread Starter
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I don't think that it's been in an accident, at least not according to what the seller told me. And it seems more like the locking mechanism isn't working rather than the door being jammed. They said that it worked up until this year when they didn't use it for the winter then in the spring it wouldn't open.
I'll try leaning on the door, haven't tried that yet. I sprayed it with Deep Creep but didn't get a lot on it because the can was almost empty, I'll pick up some WD40 today and try that.
Hopefully the hammer trick will work, that's much more my diy capability than working the voltmeter.
I can get at the nuts for the hinges but I feel like that'll cause me more grief than I'm having now; has anyone tried that?
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post #10 of 20 Old 05-07-2017, 12:19 PM
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Worthless if the latch still doesn't come undone. If double latched correctly you will not get it to give, it's made to take an accident rollover and not come undone. If you got door panel off you've got the access you need to open it. Voltmeter issue is killing you here, the latch motor likely not getting power.
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