[firstake2002]

When it rains water is coming in from somewhere on drivers (left) side.
Soaks under carpet and wets wiring harness. Causes windshield wipers to run even though they are off. Turn on seat warmer an wipers go off.
It is coming in from firewall area.
Any ideas?
I took the carpet up and dried everything.

 

[HannahsDaddy]

I'm not sure if Sorentos are the same, but my Grand Cherokee did the same thing. It was a clogged drain hose which goes through the firewall. It backed up which caused the water to drain into the floorboard instead of out through the firewall. Fixed it with a coat hanger.

 

[timosorento]

More than likely the sunroof drain runs down that pillar.