What fuse is it for rear hatch actuator 99envoy

Based on the information provided, it seems that the issue could be with the actuator or the wiring between the switch and the actuator. The fact that the dash message recognizes the hatch is open when the actuator is in the open position indicates that the sensor is working properly. You may want to check the wiring and connections to ensure that there are no breaks or loose connections. If the wiring appears to be intact, it may be necessary to replace the actuator.

It is definately the locking mechanism. .same issues with mazda tribute and mercury mariner ford escape...you will need to remove the panel to replace it..m

Check the ground to the actuator, if that is ok replace the actuator.

There should be a fuse also do you have a key fob. With rear hatch button on does that work if not check fuses for the body controller. Also check for power and grounds at rear hatch motor/actuator .
Good luck Steve

I own a 04 durango and the door lock actuator froze up internally and I could not open the rear hatch. After hours of research on my computer nothing seemed to fix the problem. I eventually figured it out myself. You must pull the screws out of the molding on the inside of the rear door. You can now pull the molding toward you and look down at the actuator and latch. You can pull on the molding quite a bit if necessary. I never broke mine and I was pretty agressive with it. Now, on top of the whole mechanism is the lock actuator. There should be a white plastic lever sticking out towards the driver side. If you can slide it from back to forward "forward is front of vehicle", the lock should be working. If not your door is not unlocking. My durango had 3 Torx screws on top of the actuator. Remove them. This will take the actuator off of the latch. Now that the actuator is not binding or holding the lock from moving, again try to move the white plastic lever towards front of vehicle. It should click and you should be able to open the door.

door lock actuator solenoid ( inside of door) needs to be replaced

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?

sounds like a blown fuse, open drivers door and look at side of dash, fuse panel is there check fuses

It has a bad rear temp control actuator. Start digging in the rear hatch for the thump and you will find the actuator. Have you checked fuses for the radio? The radio fuse memory fuse might also control the seat. As for the door, it sounds like a rusted latch. You will have to try to remove hatch panel to get to the latch to lube it or replace it.