AC Drain
Some
big troubles are caused by a clogged AC drain. When the drain gets
clogged, the water goes inside the car. That would not be so bad if the
BCM (Body Control Module) would not be located exactly where the water
goes. As you know, computer and water is not a good mix. You should
check the drain before the passenger foot well carpet gets wet or even
worse, the BCM is destroyed.
Here is a
diagram of where the Drain is located.

Here
is a picture of the AD drain. The drain is in the blue square.
