Ok, then it does like you fully understand how they operate and as Cfedor has mentioned it sounds like you have an issue w/ Switch/Wiring at switch. There have been threads in the past regarding corrosion problems w/ the switch Liftgate switch that's on the bottom of the liftgate (I believe specific to northern cars where water after salting the roads gets to it.)mtrot said:Yes, I understand that you have to press and hold the button on the lift gate. It still does not work all the time.
I believe it's pretty easy to remove the switch for inspection.