You are going to have to pull the switch connectors one at a time to see
if there is a sticky switch. But, IIRC even if you leave the doors open
all night there is a master time out relay. Sorry dunno which or where.
But, I know there is a 20 second timer when you close the door after
shutting it down. You may try "listening" for a relay that is trying to
close. Or, start tapping the relays. I "fixed" an AC relay that way.
Most of them are in the box on the driver's side fender well. Just tap
them with a screw driver handle. Look at the diagrams too, it might give
a hint. Also, try reseating the relay. Look for any corrosion on the
contact legs. It is a simple circuit and there are only a few components
here.
Mike