Dang, It gets hot in my area of North Carolina also but we do have a winter. In 7yrs of ownership I only replaced the battery in my JKU once and that was after 6yrs of owning it and I was the second owner, bought it with 11,000 miles on it.
Sorry but its still a sucky system and they could have come up with something better. That fricking little battery damn near left me stranded in the middle of nowhere.
It doesn't delete the auxiliary battery in function, just physically. It replaces it with another full-sized battery.
I'm pretty sure there is a new law that states a dealership has to prove XX accessory caused a problem to occur. Before I chose the gladiator I was looking at Ford truck options. And in talking with the service department there they were the ones who told me about that law. That came about in a discussion of doing lifts and winches and random stuff there on a brand new vehicle. I used to work for Ford back in the day and aftermarket stuff was never a thing....ever. but now more and more dealers do them. This dealer told me that very law - can't remember what its called. And who knows they could have been blowing smoke. But I've heard about that a couple times now. It would be nice to get the actual true answer though.... If anyone here can post a link to that supposed law if it does in fact exist that would be awesome.
Knowing the system as well as you do, do you think that a genesis kit, and using the second battery as a replacement for the factory aux battery, would be a option to consider for those worried about it and about being stranded?
this is something I actually worry about quite a lot....
interesting. thank you for this info. thats quite a lot of stuff. So how does the alternator tie to the battery then. Isn't the harness that goest to the alternator, main batt, and secondary batt all one wire?I've been researching what to do in case mine goes this same way, and I think the simplest, cheapest, and easiest solution is found here.
https://www.jlwranglerforums.com/forum/threads/aux-battery-ess-system.85696/page-2#post-1791098
Remove the auxiliary battery and associated cabling and make a simple non-fused jumper to move all of the electrical to the main adult-sized battery. Install a quality full-sized battery and you are done.
If you need lots of auxiliary power, the little hard to get at battery was never doing that work anyway, so then you can consider spending $1300+ on the Genesis setup with two full-sized batteries.
Here's the collection of crap that gets tossed.
https://www.jlwranglerforums.com/forum/threads/aux-battery-ess-system.85696/page-3#post-1792466
The stupid shit engineers do sometimes blows my mind. Countless times when fixing very simple things in very unsim0le place on my tractor and semi makes me lose it. Trying to shove a transmission filter between the drive shaft and frame then turn it 90 degrees and try to screw it on blind with corn stocks poking you in the back with oil running down your arm is a treat let me tell you. On my sprayer they ent from a Cummings motor to a John Deere motor so now you need a step ladder to check the oil because it is the non platform side. I could go on and on. Basically these dip shit only know how to build things and have no clue on what it takes to fix things.
The alternator ties back to the main block at the fuse box and the jumper moves everything over to the main battery only. There are some diagrams in that thread that might explain it better.
The Genesis system converts the 2 battery ESS system to a single battery ESS system with an extra battery by moving the aux battery cables to the main battery. The second battery in the Genesis does not perform the function of the aux battery in the ESS system.
I have had mine turned off most of these 49K miles. Disconnected at hood switch. Again, 49K miles, orig batts and 8/2019 purchase.
That's how I heard it in theri video.The Genesis system converts the 2 battery ESS system to a single battery ESS system with an extra battery by moving the aux battery cables to the main battery. The second battery in the Genesis does not perform the function of the aux battery in the ESS system.
That's what I'm going to do. I don't care about a light on the dash, and when I'm sitting still it's not burning enough fuel to matter.
I'm just saying what I heard which may be write or wrong. I still have the original battery in mine as well, 51,000 miles in and purchased February 2020. Who knows but it just seems like a lot of people who don't use the ESS have battery issues, I've read it numerous times, in numerous threads on here and in other forums. Could just be a coincidence though.
