I closed the cargo latch on the rear door to transport cargo using rope because I could not close the rear door all the way and now cannot release the latch to close the door now that the cargo has been unloaded

Is this a rear door to an apartment, a house, a fire house, a passenger train car, a school bus, a personal vehicle, or a military cargo transport?

It won't close or won't latch? Check to see that the latch isn't already in the "latched" position. You may have to release the latch and pull it at the same time.

Sounds like the latch is seized or the tension spring is broke.
You'll probably have to replace the latch.

you might have hit hard to close the door. open door pad n try to open the gate

the latch in the left rear door is either bad or stuck, open door, then with a screwdriver, rock latches in door to simulate closed. release with exterior handle. spray lubricant (WD40) into latches and continue to exercise the latch. if this quick fix does not work, then a new latch for this door may be needed.

DW Mylin

you may have to take off the inside panel and see if the inside latch is broken stop by your local nissan dealership in the parts department and they be able to print you off pictures and diagrams showing you how it comes a part.

try spraying them with a pb blaster and allowing them to sit for a few hours, respray every 25-30 minutes. Then when there done spray well with a brake cleaner to remove rust, then allow to dry spray with a wd-40 then a white lithium grease, should do it

use a large screwdriver,tire iron or a wooden spoon[?] inserted into the 'hole'between the latch levers,where the post should be.lift door latch as if to open door,pull/pry latch 'ears' open.if they don't stay in place when opened fully,latch may be broken.

push rear hatch to closed position to release locking mechanism

Try spraying some lubricant into the latch and handle assembly and pull it back and forth to work it in.. You may want to remove the rear trim to get better access to the internals of the latch cable....