My nissan murano back door won't open? It used to unlock and lock but now does either. Whether I use the keyless entry and try to lock/unlock doors or manually in the car try to lock/unlock doors---neither seem to unlock the back door anymore?!

How about a year, make, model????? Not all cars are the same

does your unlock button work in car? If it does, do you have another keyless entry key fob? If so does it work? If you just replaced the battery you can try removing battery and cleaning contacts within remote. I know some of the nissan altimas had the same issue and the only solution was a new key fob. Good Luck

Disconnecting the battery erases stored memory,after you connect the battery put the key in the ignition cylinder and turn the driver door switch on(open) and off (closed), on (open),the entry,exist function then becomes complete, and the return operation can be operated,

can you manually unlock the lock and open the door?? Is it more than one door or just one specific door? If its just one door, yourcactuator inside the door may be bad or you have a wire issue. If its all the doors, more than likely you blew a fuse or a relay(id say fuse)

Open drivers door, locate plastic plug on inside of door, near latch, across from door lock cylinder. Pop it out. There is a set screw that retains lock cylinder. Tighten set screw.

this acctualy a saftey feature on most vehicles. if you want to deactivate this feature you can pull the fuse for the power locks. the downfall to this is, if you have keyless entry it will not work nor will your power locks

The keyless entry is designed to work with the doors closed (closed - not locked). If the door ajar sensor thinks the door is open the keyless entry is disabled. When you manually lock the door it might tighten the door just enough to activate the keyless entry. I would try slamming all the doors closed and then see if the keyless entry works. If it still wont work have the wiring checked on the front door lock.

check the room 10a fuse that is the problem

have you tryed and reprogram it? if you have the fault lies in the the system and you need to replace it because it is a factory error.

Close all vehicle doors, LOCK doors using drivers side switch.

Insert key all the way into the ignition, (do not turn) remove key.

Repeat this step 5 times. (6 total)

Hazards should flash to indicate program mode.

Press any button on transmitter to be programmed, hazards should flash to indicate successfull program.

*For additional remotes, cycle drivers door lock UNLOCK, LOCK, press any button on remote, hazards should flash. Repeat step as necessary.

Ignition ON, (engine off) ignition OFF, UNLOCK using drivers side switch, test remotes.

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