PSA - Check Your Fuses

I want to say that I generally follow the obvious rule of checking all fuses anytime there is an issue. But I've either missed a blown fuse or not looked early enough in the troubleshoot steps. Which has caused some headaches.

Apparently blown fuses and/or shorts can cause some really weird issues.

I figured I would document a couple weird issues I've had in the hopes to save someone else some time and headache and hope they get here from a google search.

1)

The following stopped working all at the sametime:

Dome, map, trunk and door lights

Radio

HVAC display (HVAC does turn on and work)

Key Fob

Information display showing that doors are open

Seems like the BIU was dead.

Solution: Fuse labeled as "Backup" in engine bay fuse box was blown.

Thread about that here.

2)

ABS and traction control lights come on. AT temp light flashing. The following codes from the dash DTC, under the ABS section: C0045, C0047, C0071. I read the following code from the TCU: P0957-Backup light relay circuit too low. Headlights won't turn on/headlights turn on when they off when in reverse. Reverse lights don't work.

Cause and solution:

Reverse lights circuit shorted out and blew "Lamp" fuse in fuse box by drivers feet.