3.6L ESS Aux Battery Bypass



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Feb 18, 2018
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2018 JLU, 2019 KL, 2020 JT
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My question of the PCR disconnection from N3 and removal of the PCR from my vehicle was more or less answered by you with your statement; as long as N1 is powered it will crank and not think the ESS battery is dead.

What I meant by "lockdown" is the inability of the vehicle to crank or start because it sees no power at N1. This would force me to have my vehicle towed to a dealer where they would have to do a reflash.

My reasoning of not wanting to jump N1 to N2 has nothing to do with the 40 amp fuse not being sufficient to handle the current load; there is nothing wrong with going this route. I like to keep things as simple and tidy as possible with the removal of unused components, ESS aux battery, PCR, when mods are accomplished. I just believe the most direct approach with the least amount of complication, is connecting the main battery to N1 & N2 as long as there are no cranking problems and dashboard code errors appearing from using this method.

Another step in this procedure we haven't talked about, I assume, the IBS would have to be unplugged as well? Thanks again for all your help and knowledge.
Ultimately you own any changes you make to your vehicle and you don't seem very sure of what to do. Some of what gets posted here confuses me. For now I would recommend this thread as I think it will help you accomplish what you want with the least amount of changes or risk. https://www.jlwranglerforums.com/forum/threads/ess-dual-battery-management.60034/


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