My 1999expedition rear glass hatch is keeping the door ajar & interior lights on ,were is the sensor for this lock to let it know the glass is closed?.

The latch switch is bad

Sounds like the sensor inside the rear latch. Most vehicles don't use an actual door switch these days.

there is a bad door switch .
or rear hatch switch.
all you can do is detatch the switches one by one and hope to find the culpriet!!the rear hatch is most suspect... but dont rule out the drivers' door!
good luck.

For Doors not getting open with remote or key problem,there are help links provided below.Click the link below to go through its procedure and troubleshoot the problem:----
drivers side front door will not open from inside or outside?

http://technoanswers.blogspot.com/2012/01/ford-f-350-crew-cab-drivers-side-front.html

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Car door will not close?
http://howtobyme.blogspot.com/2011/11/car-door-will-not-close.html

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All power door locks not working ?
http://howtobyme.blogspot.com/2011/11/all-power-door-locks-not-working-on_14.html

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Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html
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How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

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Vehicle door panel components?

http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

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Truck Door will not close?

http://schematicsdiagram.blogspot.com/2011/12/ford-truck-door-will-not-close.html

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Where is Cars Door control Module located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-cars-door-control-module.html

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Power door locks not working?

http://schematicsdiagram.blogspot.com/2011/12/power-door-locks-not-working.html

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Door ajar light stays on?

http://technoanswers.blogspot.com/2012/01/door-ajar-light-stays-on.html

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Door locks not working?

http://technoanswers.blogspot.com/2012/01/door-locks-not-working-on-ford-explorer.html

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Front Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/front-door-dis-assembly-diagram-for.html

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Rear Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/rear-door-dis-assembly-diagram-for.html

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How to test Power door locks?

http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html

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Doors will not open with Remote?

http://schematicsdiagram.blogspot.in/2012/02/lexus-doors-will-not-open-with-remote.html

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How to replace Door Hatch ?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-hatch-on-acura-integra.html

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How to remove Doors?

http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-doors-on-acura-integra.html

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How to Replace Doors?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-doors-on-audi-a4-and-vw.html

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Remote will not unlock Rear door?
http://schematicsdiagram.blogspot.com/2011/12/remote-will-not-unlock-rear-door-on-gmc.html

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Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html

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This will help.

Thanks.

I had the same trouble and found that I had to disconnect the glass hatch switch. It is probably defective like mine. I had to release the door by going from the inside and opening a little plastic door and open the whole hatch by using the emergency lever. Then I had to unscrew the plastic panel near the glass hatch and pry it apart just enough to disconnect the glass hatch switch. It is just a small connector that pulls apart. There are two connectors. One for the back wiper and then the glass hatch so make sure you disconnect the right one. This allows me to use the whole door but the glass hatch becomes useless unless you get a new switch.

Check all door ajar switches on each door & tailgate & hatch. To disable each switch unscrew each switch seperately & unplug light goes out proves which switch is bad. Start with front doors then tailgate then rear doors. Goes by how many times that you really use each seperate door.

sound like your fluid sensor may be stuck or bad if light stays on try tapping the washer motor on the resevoir if it goes out faulty sensor as for the door ajar light it might have bad connection with sensor saying the door is closed local dealer should be able to troubleshoot sensor

The liftgate consists of the following components:

• liftgate door lock actuator
• liftgate lock cylinder (if equipped)
• liftgate window glass
• liftgate window latch/ajar switch
• liftgate window glass release handle
• liftgate latch remote control which consists of the following component:
  • liftgate release handle
• liftgate latch, which consist of the following component:
  • liftgate latch door ajar switch

Liftgate Latch Actuator Removal and Installation

1. Remove the liftgate latch remote control. For additional information, refer to Liftgate Latch Remote Control in this section.

SECTION 501-14: Handles, Locks, Latches and Entry Systems 2001 Escape Workshop Manual
REMOVAL AND INSTALLATION Liftgate Latch Removal and Installation

1. Remove the liftgate trim panel.

1. Disconnect the liftgate ajar switch electrical connector.

1. Disconnect the liftgate latch actuating rod.
   1. Open the clip.
   1. Disconnect the actuating rod.

1. Remove and discard the liftgate latch bolts.

1. Remove the liftgate latch.

1. NOTE: Make sure the liftgate latch release rod is not preloading the latch. It should be clipped in a relaxed state with no slack.
   NOTE: Position the liftgate latch release rod by pushing outboard to remove the slack.
   

1. Remove the screws and the liftgate latch actuator

the door switches for that year explorer are actually found inside the door panels, built into the door latch. they are a real pain to change out. the only way really to determine which door it is (it could also be the rear hatch) is to use a scan tool to view door ajar data, then change that one switch.