I'm having some tailgate/rear hatch issues and thought I'd ask before I go taking things apart. The most noticeable issue is that when you open the hatch the rear dome light won't turn on. If you glance up to the instrument gauge cluster the door ajar light is not on. Even though the door is open the vehicle doesn't acknowledge this. As such if I use the key fob to unlock all the doors and only open the rear hatch the doors will all automatically lock because it thinks none of the doors were opened. Opposite of this problem is that on Monday the door closed and locked with the key fob but the rear dome light did not go off and stayed on for 10 hours.
The latch and striker plate are in great looking condition and clean. When the door is closed and locked it's actually closed and locked.
One other problem I have with that door is the rear defroster, it doesn't work. The switch lights when pushed and the rear view mirror heaters turn on. I'm not sure if the defroster/dome light issue are related but thought I'd throw it out there.
Off the top of anyones head, is there anything I should check?