Hi All
Recently after van hit 150000 problem started:

2007 Dodge grand caravan SXT without motorized liftgate option.

If Van is not locked then 75 seconds exactly after turning off key rear liftgate door pops (like when you depress switch on the door remote fob does not have button for liftgate) the interior lights come on full blast and drain battery in about 48 hours. All else functions normally. So if I forget to lock my car in my garage and leave it over weekend battery dead as a doornail.

Don't know if I should pursue the door switch which appears to be functioning normally or a computer reset or software or are there time delay relays or ...

Any ideas would be appreciated

Thanks
Jeffrey