8.4 Acting funny after R&R - Need Help!

[Rahkmalla]

So i finally pulled the trigger after months of putting it off and routed a 6 foot USB cable under the center console, behind the window unit, behind the HVAC/Start panel, and behind the 8.4 poking out the top under my Ram Tough Track. Very happy with the routing, and even though it was a huge pain in the ass to get the center console out because of my under-seat compressor and armorlite making it difficult to access certain plugs needed to remove the center console, eventually it all came together.

But now that it's all together, my 8.4 is all kinds of fucked up. The accent color went blue. Okay not a big deal. Then it froze on hitting nav. Not great. Restarted truck and tried to find the settings for accent color... half my touchscreen presses dont register. some register some of the time, some register all of the time, and some register an inch to the right (when i hit apps it selects settings for example, but when i hit HVAC it doesn't select nav).

Other oddities: the screen wont show what the HVAC temp is set to. It will show when i change fan speed, and pressing the buttons DOES change the actual temp the HVAC blows (got it blowing hot, medium, and cold air) but the screen always says LO no matter what. Bluetooth connects, but android auto doesn't.

Process of elimination:

all buttons on the window/locker/offroad+ panel work fine
all buttons on the HVAC controls work, all knobs twist and function as desired (though not all show they are functioning on the 8.4)
truck starts normally
JSCAN only registered one code, and it was "satellite antennae circuit open" but it was a stored code, not a current code and when I cleared it, it did not come back.
tried looking up a 8.4 Unconnect force restart sequence, but could only find one on a dodge and the directions were to hold the top right of the screen for 10-20 seconds and i held that position for a minute and nothing happened.

tried disconnecting my battery, but the aux battery foiled me. Don't know how to disconnect the aux battery.

Worth noting, i took pictures of the back of my radio before removing it, and put the plugs back in the exact same spot i took them out of. If you've been back there you know there are 5 plugs that with identical fittings

I put them back in:
red____________pink_blue_white_gray as in the photo i took

So... please help! What else should i be checking, how do i force restart a radio that wont register the presses i need to make to reset it, and how do i disconnect the aux battery?

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[Hootbro]

Might need a couple of cold reboots before it configures correctly. That means power off, doors locked and left for a few hours (overnight preferrable). May take a couple days before everything pops in.

 

[Rahkmalla]

Incremental update:

Found someone with a similar issue on jlwarangerforum. followed advice there and pulled fuse 97.

Now my touchscreen actually touches. Nav works, android auto works. almost everything works... except:

I have lost offroad pages (if i try a workaround and i put it in 4hi and hit off-road+ it starts to launch offorad pages... but then just doesn't. The part where the little jeep drives over the mountain and it says "loading" just never happens) and my HVAC still wont display temperature. it says LO and HI, but nothing inbtween. It only says HI when at maximum and low even one step below maximum all the way down to actual lo.

I'm at a point where i can live with it for a few days to see if some cold boots give it a chance to figure itself out.

 

[Mr._Bill]

When the 8.4 head unit is reset (power loss), it can take up to 24 hours for normal operation to return.

The problems likely came from doing the work without disconnecting both batteries. Hopefully, there is no lasting damage.

 

[Rahkmalla]

The problems likely came from doing the work without disconnecting both batteries. Hopefully, there is no lasting damage.

This thought occurred to me when I went to disconnect the battery as a diagnostic step. Probably should have skipped removing the radio altogether, or at least pulling the fuse before doing the work.

 

[Rahkmalla]

Final update. Left my truck alone for a good 3+ hours then went to take ot for a spin. All problems gone. Leaving this up incase someone else runs into the same issue.

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