WHen i open the back hatch, the light does not come on when the switch is on door but if i flip it to on it works fine....GOt any ideas on this problem

I have the same problem, the "door open" light on the instrument panel does not come on as well when the rear hatch door is open. I'm guessing that there is a faulty sensor but I don't know where it is located. Have you found an answer for this yet?

I hope he found the answer, that post is 5 years old. :)

What year is your 4Runner?

And welcome to AF !