While sitting in my truck, and it raining lightly outside the following things happened:

1. horn started blaring
2. hazards started (pushing button does not turn them off)
3. TPMS fault shows up
4. headlights stay on

I assume water got somewhere, but where? where do these all connect to? I cant find any common location that could have shorted all of these

 

fuse # 1 is horn
you think water get into the fuse box under the hood?

 

Check for water at the BCM (Body Control Module) behind the passenger side kick panel. It is the box with the fuse panel.

 

i checked and there wasnt any.

 

ill try to get it out. I looked at the front and didnt see anything

 

Here we are....


Water dripping out

Corrosion...

 

How in the heck the water get to the BCM.

 

Usually it is caused by the drain lines for the vista roof becoming detached or plugged. Water that leaks through the seal then travels down the A-pillar. Sometimes it will literally fill the door sill wiring trough. There was at least one instance the cowl had a crack in it and water was getting in that way.