Several Electical Problems w/2004 Navigator

There is a fuse on back of the radio , but I’d check all fuses because you’ve got several problems.

You may have a wire broken between the drivers door

Bad power lock in door.

I have one doing the same thing right now you have to pull the inside cover off and free up the latch system it is probably the locking part of the latch

The lock assy

You can buy replacement key fobs for it on the Internet. It is the only way I can open my hatch. Mine broke where the keychain went so I ordered a couple off of Ebay. They are pretty inexpensive and you can get different colors. You just have to order ones specifically made for your car. They will give you directions on how to program it to use with your car. My dealer emailed them to me. It mainly involves pressing buttons on the fob and taking your key in and out of the ignition. Very easy to do. Hope this helps. The remote was the only way I could open my hatch as the touch pad dosen't work. I found a place to order one and will be replacing it along with the hatch strap.

Did these doors quit at the same time or over a period. It seems that the actuators for the locks have gone bad. With the mentioned doors, that's a lot weight for the actuators to unlock and pop open. With the remotes and console not working , that's more reason to think the actuators are the problem.

I have a problem the back door will not open with key remote or just by the touch pad. That I know of is there a release button or something to open the back hatch.

First, on the rear hatch, there is an actuator. On FX, when you close the trunk, it kind of **** the hatch closed all the way. When you press lock on the remote, this same actuator locks it as well.
Now,
1) when you unlock the car from the inside, go back there and press the button to open the hatch door manually, do you here any noises?
2) Close all doors, go back close to the hatch button and using the remote , lock the car and then unlock the car. you should hear a sound from the actuator locking and unlocking the lock on the rear hatch!

If you don't hear this, your actuator is inop.
Next step would be to check the fuses inside the car, on the left bottom driver side, and outside on the battery compartment.
It might be just a fuse.
If all fuses check ok, your actuator is most likely gone! Not ea expensive fix, just time consuming!

NOW, if you can hear the noises, then something is either broken inside the actuator or one of the cables is loose!
Hope that helps.
Also, what year and miles on your fx?

Do the power window buttons and lock/unlock buttons work on your drivers door? If not you probably have a broken wire in the black boot going from the chassis to the drivers door. Pull the boot back from the door and you'll find a wire broken. Add a piece of wire and solder back together and wrap in black tape or heatshrink and replace boot. Then your unlock button should open rear hatch. Hope this is your problem because it is an easy fix.

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