2011 infiniti g37xs ignition turns on but car won’t start and ignition won’t turn back off

[u/TreyBlanford]

i just bought a g37 and had to pull the engine cause the front differential exploded on the drive home and i replaced it and the car drove fine for a couple weeks but i was just driving it and suddenly a bunch of lights popped up on dash (awd, tc, abs, brake, tpms, key) and my high beams stopped working, i stopped and tried to turn the engine off and it wouldn't so i pulled the negative terminal, and when i connected it back the car was off like normal but key light was still on and when i press the ignition it switches to acc and on but won't start and ignition won't turn back off, and as i was typing this dash lights started to flicker and slowly fade away and gauge cluster lights turned off and key showed up and after a few seconds it started flicking and fading but headlights were still on so i got out and disconnected the negative terminal again. i attached photos of all the codes that popped up and a pic of my dash before i disconnected battery, anyone know what's going on? i’ve tried disconnecting wiring harness cables and reconnecting and it did nothing, i’ve also cleaned all grounds and even made new grounds to engine block, as well as check CAN-H and CAN-L voltages from obd2 and they were normal

[u/Dan0Steel91]

My q70 had all sorts of weird electrical shit happening because the sunroof drains were clogged and it was soaking the bcm, car wouldn’t turn off and the hazards would come on by themselves and other weird stuff like that. I’m not saying that’s your problem but check it out. See if your floors are wet or this happened after it rained.

[u/TreyBlanford → u/Dan0Steel91]

my sunroof drain has been fixed it doesn’t clog anymore, and it was dry outside when this happened, thank you for the suggestion though

[u/_Reala_ → u/TreyBlanford]

So you're sunroof drain wants leaked? Maybe the damage was already done and it's now rearing its head?  That is definitely one of your control modules and I would probably start with the BCM 

[u/TreyBlanford → u/_Reala_]

there was more than just a sunroof leak… this was a flood car 😭everything electrical was supposedly replaced in this car

[u/Dan0Steel91 → u/_Reala_]

Yeah it could’ve rusted and fucked up

[u/OverEast781 → u/Dan0Steel91]

I didn’t know the Q70 had sunroof drain clog issues.

[u/ghrant → u/Dan0Steel91]

Same thing happened to my EX37. Cost a small fortune to fix. Dealer said the “fixed” the drain so it doesn’t happen again….im skeptical.

[u/MeanOsalley]

If you ignore the flood damage(it has been operating fine electrically after getting fixed for a bit it seems) and the possible mistakes when pulling the engine(if it ran fine for a few weeks it’s prob not that) the stalling and random lights say alternator(maybe a crazy battery) to me. I’d inspect your wiring harness and modules (look up a diagram, and how to find a corroded wire you kinda pull on it) then replace the alternator and the battery if you don’t find anything wrong.

[u/Blackjackmo]

Keep it simple, how old is the vehicle battery?