This post's objective: seeking an answer to a somewhat odd,not seen by me before behavior, exhibited while crawling rocks with it.
Model of JK: a 2011 JKU with slight modifications
Issue: a sudden ,full , complete loss of power or shutdown of the entire electrical system , (even internal courtesy lights).
When: this occurred at the immediate moment that an impact occurred. This impact was completely "towards gravity" vertical in direction. Downward with travel of 8"-10" of front end. Striking downward upon flat,rock ledge.
I was crawling with friends ystrdy.
On series of ledges.
At one point, my JKU slipped off a ledge ,dropped about 8" down and impacted the pssgr side front framehorn extremely hard. Very hard. It hurts to remember how hard it was a day later.
It doesn't matter but the actual point of impact was the stub of the bracket where the stock "bashbar" I cut-off long ago was. Right down onto that box on right framehorn. That, again,isn't important. No damage except some slight steel mangling to that you see yellow arrow pointing at:
( fwiw: That's only still there because the ExpeditionOne basicDX winch plate connects to it so I can't cut it completely flush to frame. As I said, all that is not important....)
so, when the front slipped off and hit/landed upon the frame there, the Jeep just went black. As in , no power, electrical nor engine, no chimes , no dash warnings , no key touch , nada.
Just BAM! then everyone heard it shutoff and I announce no power+ "wtf?!"...
I grimmaced and slowly turned key to "off". Collected myself ( it was hard hit) then turned key & she turned right over. WTF?
I looked in user manual about the varying levels of passenger restraint ,ORS, the airbag different activation levels , but all of that pertains to forward or rearward impacts. Nothing about downward . I searched far and wide on internet. There's some questions. about '...can you deploy airbags offroading...' but nothing like what I experienced.
Can an impact , downward , of great degree cause some
power down function ? It wasn't just the fuel system or engine; it was total Jeep go dead dead. No headlight turn on , no festoon overhead lamps , no radio no aux nothing.
I honestly thought it was broken. Afterwards, the rig acted as though nothing happened and resumed crawling.
Just wanted input from others if they've experienced similar.
( oh. I made the obstacle, it took me 3 years to beat it! :thankyou: )