rear hatch door ajar sensor going flashing off and on intermitten

What is your question?

My door ajar indicator shows that a door is open. I have traced it to the rear hatch. It wont allow me to lock the doors with the key fob, just gives a long tone. This seems to also depletes my vehicle battery in a few days. Where is the sensor or pin switch for the rear hatch located? Thank you

What makes this problem better or worse?

The same all the time

How long has your 2006 Toyota Sequoia had this problem?

Two weeks