Battery drain after airbag deploy

[ellemustang]

I'm a girl with limited experience here, so let me see if I can describe this properly. Someone following me in my moving truck wrecked my automatic 2011 v6 in a front collision that deployed the airbag. The wiring behind the steering wheel was checked and the clockspring is ok, so I'm getting a new airbag in there soon but still have it out, so the airbag light is still on. After the accident, I kept having an issue with the cd popping out of the cd player over and over again, which I thought was the reason I kept having to wake up and jump my car after it sitting overnight. After I pulled that fuse, and then same same with the battery drain, so I checked the battery itself, and it wasn't great, so I replaced that then too. Within 2 days of it sitting, I had to jump it again. I noticed that when I closed everything up, the overhead dome lights barely stayed on, so I tried to pull both fuses for that to test it, but both of the interior (I think 12&14? I can't remember now) would only kill one side of the lights, so that's where I stopped with that test and haven't gone back to it.

Like a lot of mustangs, my car had to the doors fill up with water from the drains getting clogged, because yes, I had rain water coming in on passengers feet before I figured out what was going on, but that was over a year ago now. I thought maybe it was an issue with the smart junction box getting wet, but I don't see any corrosion down there or signs of dampness. Everything was fine before this accident and the battery drain started.

I know battery drains can be a time consuming mess to diagnose, because now that I'm at a stand still, I can't seem to get anybody who's normally willing to help me work on cars when I need help to come over and help me do it. I'm a relatively attractive girl too, so ya, it must be a pain in the *ss. lol. Anyway, more info to help me figure this out:
-The dome light stays lit longer than 30 min until the battery dies completely
-There is no door ajar warning that comes on when everything is shut.
-There aren't any codes getting thrown
-The bulbs were swapped out with LED 2 years ago and were fine prior to the accident
-The battery recently installed is good
-No other lights come up on the dash besides the airbag I still haven't put in
-Everything works fine after the car gets jumped other than that the cd and radio had issues before I pulled those fuses.

Anybody know what this is, and how /if I can fix this by myself? Do I just have to replace the SJB, or could it be something else? The sensor behind the bumper doesn't go to the same electrical as the dome lights, right?

 

[08TorchRedShelbyGT500]

Since all was well before the airbag deployment. That is where I would start troubleshooting, but an impact from an accident can certainly cause many issues. I did some searching, and aside from the many possibilities, this stood out just a bit (for starters).

 

[ellemustang]

That’s why I’m puzzled. The RCM can cause an airbag light or a draw from the module staying armed but it never keeps the dome light lit. The Smart junction box has no physical wiring path to the Restraint Control Module to control done lighting. If the front end wiring harness was crushed or shorted out, a chafed wire could create a ground path that wakes up different modules, but that would be illuminating warning lights on the dash and be throwing codes, which it isn’t doing. It’s weird.

 

[Jack Jones]

Sensor behind bumper / front crash wiring → not related.
Airbag module → not drawing battery when removed.
Your symptoms point strongly to SJB or a stuck dome light relay.
DIY troubleshooting with a multimeter and fuse-pulling can isolate it before dropping money on a new SJB