Rear door lactch will not open but other doors do

You need to replace the rear latch assembly it sounds like the switch inside latch is going bad.

Found this wiring diagram for lift gate, if that is what we're talking about? Not only check the fuses, check fuse circuit for voltage. Use a testlite.

use a round bar ( a screw driver ) and place it under the latch and pull the latch out as you press the button to unlock as if you were opening the door.

use a round bar under the lock tongue and pull it back as you press the button to open the latch

Hotnurse37. I'd you fix your problem. I have same issue. Fuse is okay. Remote will open all doors but I can't even hear the rear attempting to unlock. Did get access to emergency release after trying for a long time. Lock and latch looked fine but back to same problem after closing lift.

Mine did this too....the latch kept getting stuck. If you put the key in the ignition and unlock the power doors, pull on the gate door (don't open it, just enough to release the latch), and it should come out so the hatch will latch.

It can be faulty switch or its issue with lift gate latch.Its got stuck up hard or cracked inside.It has to be inspected.-----------
There are few help links with proper solutions for these problem.I suggest you to refer the links.
Click the link below:----
2007 Mercury Mountaineer: Liftgate will not Unlock or Open? http://whoisbyme.blogspot.in/2012/06/2007-mercury-mountaineer-liftgate-will.html
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Adjust Hydraulic Lifters? http://schematicsdiagram.blogspot.in/2012/04/adjust-hydraulic-lifters.html
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How to open rear lift gate? http://repairhelpcenter.blogspot.com/2011/12/how-to-open-rear-lift-gate.html

--------- Power Liftgate Shuts Down http://whoisbyme.blogspot.in/2012/07/power-liftgate-shuts-down.html
------------ Power Lift Gate Will Not Remain Open http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-remain-open.html
----------- Power Lift-gate will not Operate http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-operate.html
------------- Liftgate will Not Stay Up Open? http://whoisbyme.blogspot.in/2012/07/liftgate-will-not-stay-up-open.html

---------------- Rear Door will not open http://whoisbyme.blogspot.in/2012/07/rear-door-will-not-open.html
------------ 2000 Toyota Corolla: Rear Door wont open from outside or inside? http://whatisbyme.blogspot.in/2012/05/2000-toyota-corolla-rear-door-wont-open.html

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These details will help.
Thanks.

Look at the door's locking mechanism. Is the Latch Gate in the down position? Is the Door Mechanism properly tightened to the door? These are Torx/Hex head bolts. Tighten these if needed.
If the Latch Gate is down:
1. Unlock the door.
2. Lift up/out on the Door Handle as if you were opening the door.
3. Use a screwdriver to lift the Latch Gate so it lifts the Gate up and out of the way.
Alot of these Gates have plastic coverings that sometimes split and stick or cause the door mechanism to jam. Inspect the Door Mechanism for anything that could be causing it to jam. Using a pair of needle nose pliers remove any of this split plastic (if so equipped) pulling as much of it off the Latch Gate.
Use WD40 with the red spraying hose on and stick it as many openings you can and lubricate as much of the Door Mechanism as you can.
Check the operations (plural) of the Door Mechanism, Opening and Closing the Gate using the screw driver to push in the Striker Gate causing the Latch Gate to rotate back down into position. Repeat... checking for the Latch Gate to Release Up (on it's own) when you "open" the door. If it doesn't, then there is either jammed or a return spring is broken.
Have you dented or distorted the Door and / or Door Mechanism in the process of trying to slam the door close? You will have to either bend the the door area back to as close to possible the original shape. Use the other door on the other sides as a guide on this. You may have to replace the Door Mechanism itself, as when they are malfunctioning and are slammed (over and over) it could break the Mechanism itself. If the Mechanism is broke, you will have to remove and replace the entire mechanism.
Let me know if this helped, or if you have additional information of questions. Feel free to conatct me at FixYa.com!

how to i open a stuck lift garte on a ford winstar 2000 lock broken too