Dead jeep

[Rusty PW]

The answer is on your dash - the battery symbol is a charging system issue.

Here's what i see as a chicken/egg thing - the N3 fuse was blown but you may have blown it while changing batteries!
That's about the only time that fuse should blow.

Be careful what you see on youtube or the internet in general on this stuff - not everyone understands, yet they still want to tell you they do.



What makes you say the charging system isn't working? 12.8 is normal IF both batteries are fully charged.

I really hope you charged both batteries before installing them - with a good AGM charger. Don't install batteries right off the shelf and expect them to be full or for the alternator to "take care of them".
Charge them first, install them, in this whole process, you should have pulled the IBS off the cables and battery terminal, set it aside for several minutes to reset it, then plug it all back in and put it back in place.

So the correct process is:
Set the new batteries on a charger or chargers - ideally, one at a time, full charge on an AGM charger.
Back at the Jeep-
Pull the negative cables off the IBS
Pull IBS off the battery terminal, disconnect and set it aside.
Take the two ground cables apart from each other, make sure they can't touch ground.
Pull the batteries out.
When the new ones are charged, put them in place, do the aux battery and button that up.
When the new crank battery is in place, connect the positive cable.
Put the IBS back on the crank battery negative, (connect the LIN connector if disconnected)
Put the negative/ground cables back in place on the top of the IBS.

12.8 volts is what you see when everything is working fine, temperatures in the 60s or so, and the batteries are fully charged.

It's not a complex system at all, IF certain procedures are followed in the right order.

ODD as heck that the N3 would blow without any connection issues like loose battery terminals, or someone working on the truck..................
But it's a common thing when batteries get replaced and the cables touch when/where they should not.

I don't see a battery symbol. I do see the ESS symbol.

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[ShadowsPapa]

I don't see a battery symbol. I do see the ESS symbol.

That indicates "charging system error" according to FCA/STAR

 

[Volt0]

That indicates "charging system error" according to FCA/STAR

You have the eyes of a hawk.

 

[Rusty PW]

That indicates "charging system error" according to FCA/STAR

Damn....just found out that I'm color blind.........

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