Totally screwed: Installed new Auxiliary Battery and now truck won’t start with multiple errors

[Papa Bear]

Well I just installed a new auxiliary battery last night and have run into several problems since.
First was the “anti-theft” code which presented itself on the UConnect screen. You need to have this if you do any work on your battery systems and the only way to get it is from dealer with the S/N and part# of the radio! This requires either the Jeep being at the dealership so they can verify ownership then obtain from Stellantis on your behalf or knowing it ahead of time. But, my next issue is that I apparently hooked something up incorrectly because now the vehicle won’t start. Instead I am getting every light on my driver gauges illuminated and my axle lock buttons are flashing as is my disconnect swaybar light.
Is there anyone who can help me figure out where to begin? I followed [Banned Site]’s YouTube video on how to install the auxiliary battery and followed it to the word. Now I’m stranded and could really use some help.

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[Papa Bear]

Well I just installed a new auxiliary battery last night and have run into several problems since.
First was the “anti-theft” code which presented itself on the UConnect screen. You need to have this if you do any work on your battery systems and the only way to get it is from dealer with the S/N and part# of the radio! This requires either the Jeep being at the dealership so they can verify ownership then obtain from Stellantis on your behalf or knowing it ahead of time. But, my next issue is that I apparently hooked something up incorrectly because now the vehicle won’t start. Instead I am getting every light on my driver gauges illuminated and my axle lock buttons are flashing as is my disconnect swaybar light.
Is there anyone who can help me figure out where to begin? I followed [Banned Site]’s YouTube video on how to install the auxiliary battery and followed it to the word. Now I’m stranded and could really use some help.

 

[Mr._Bill]

First thing I would try is to disconnect both batteries. Charge each one, then reconnect them and try again.

 

[Mr._Bill]

If you went in through the top to replace the aux battery, you may want to check and make sure everything mated back together correctly with no damage. Check the fuse box and make sure everything is pushed in and properly seated. Check the high capacity fuse assembly to see if any of those popped while changing the battery.

 

[Mr._Bill]

Is it still in warranty? Why did you replace the Aux battery, and did you also replace the main battery?

 

[chorky]

make sure all your connections are good first. Then check the main fuses on the distribution box.

 

[Darkamek]

Pull the fuse for the remote start stop battery and then try to start the vehicle.

 

[Jackpaul]

Well I just installed a new auxiliary battery last night and have run into several problems since.
First was the “anti-theft” code which presented itself on the UConnect screen. You need to have this if you do any work on your battery systems and the only way to get it is from dealer with the S/N and part# of the radio! This requires either the Jeep being at the dealership so they can verify ownership then obtain from Stellantis on your behalf or knowing it ahead of time. But, my next issue is that I apparently hooked something up incorrectly because now the vehicle won’t start. Instead I am getting every light on my driver gauges illuminated and my axle lock buttons are flashing as is my disconnect swaybar light.
Is there anyone who can help me figure out where to begin? I followed [Banned Site]’s YouTube video on how to install the auxiliary battery and followed it to the word. Now I’m stranded and could really use some help.

Did you go through the wheel well or do it correctly by removing the main then access under fuse box?

 

[Darkamek]

Did you go through the wheel well or do it correctly by removing the main then access under fuse box?

If he went through the top your right about wanting to check all the plugs that go to the TIPM (Total Integrated Power Module).

If you have a multimeter you could also verify the voltage on your batteries. The aux battery you could check at the fusible link at the TIPM to ground.

 

[Jackpaul]

If he went through the top your right about wanting to check all the plugs that go to the TIPM (Total Integrated Power Module).

If you have a multimeter you could also verify the voltage on your batteries. The aux battery you could check at the fusible link at the TIPM to ground.

Absolutely, I’m more worried that he did this through the wheel well….whole different can of worms if that’s the case.

 

[Hootbro]

The anti-theft code request from the radio should only happen if the radio is installed in another vehicle or it cannot verify your vehicles VIN on the CAN BUS. I think the latter is your problem. Like others said, you probably got a problem with the TIPM fuse box hook up if you went top down.

 

[ecidiego]

Absolutely, I’m more that he did this through the wheel well….whole different can of worms if that’s the case.

What? The wheel well is faster, easier, and less risky.... what can of worms? Yes I've been in there myself. I've also taken off the PDC to access the firewall grommet for wiring....

 

[Jackpaul]

What? The wheel well is faster, easier, and less risky.... what can of worms? Yes I've been in there myself. I've also taken off the PDC to access the firewall grommet for wiring....

If you did this without issue, then no worries
And by the way, I have to ask, how was it faster to go through the wheel well? A couple douche bags on YouTube did it? Is That the proof? Reality is that removing the main battery, a few bolts, and then the aux battery is super easy, not sure removing the wheel and everything else, potentially leaving the main connected or frying other things is an appropriate loophole for true process.
I’m a bit salty tonight

 

[Commodus]

Well I just installed a new auxiliary battery last night and have run into several problems since.
First was the “anti-theft” code which presented itself on the UConnect screen. You need to have this if you do any work on your battery systems and the only way to get it is from dealer with the S/N and part# of the radio! This requires either the Jeep being at the dealership so they can verify ownership then obtain from Stellantis on your behalf or knowing it ahead of time. But, my next issue is that I apparently hooked something up incorrectly because now the vehicle won’t start. Instead I am getting every light on my driver gauges illuminated and my axle lock buttons are flashing as is my disconnect swaybar light.
Is there anyone who can help me figure out where to begin? I followed [Banned Site]’s YouTube video on how to install the auxiliary battery and followed it to the word. Now I’m stranded and could really use some help.

I had a similar problem after replacing my main battery. I was very careful about arcing anything so I know that was not the problem, what we did find using the dealership tester that one cell was shorted and even though showed 12.6 volts had 0 cranking amps ( never saw this before)and the mega fuse blown. The only thing I can figure is the battery caused the problem but no way to prove it

 

[Rockabillyroy]

What? The wheel well is faster, easier, and less risky.... what can of worms? Yes I've been in there myself. I've also taken off the PDC to access the firewall grommet for wiring....

I went through the wheel well too. Fast and easy. Didn't even have to pull the fender.

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