The best video and the easiest method of replacing the auxiliary battery. It's a good idea to have a few extra push fasteners before starting. The first time is a learning curve, probably took me two hours cause I also cleaned the wheels and liner. I bought a new Mopar auxiliary for about $165 and an interstate for the main about $257. The dealer wanted over $800. Thanks again for the great video. Peter
Very good Video. I also purchased Optima batteries and took advantage of the military discount, (11-B). I bought one for my 2019 JLUR 3.6, and one for my wife's mustang. I have replaced both OEM batteries in the Jeep once, and then they died. So AGAIN, I replaced both of them, but this time I decided to go with after market batteries instead of MOPAR. Nope, didn't make any difference! They became ESS casualties in about two years. That made 2 times I had become a victim of Jeeps bad battery concept, but eventually I still experienced issues with that auxiliary battery, and the annoying messages in the dash about Start/Stop. I got tired of the whole concept of marrying different capacity batteries to each other in parallel. I can't think of any situation where I use two different sized batteries in one device? Not in my flashlight, they're all D-Cells, not in my Remote controls, nope, all AA or AAA. Never mixed. I never liked the ESS, but I do enjoy the Avenger symbol button that Jeep chose for the button. Now I've removed both batteries from the engine bay area, and relocated my battery to the interior of the Jeep. I live in South Florida. It gets toasty down here! I ran 00 gauge pure oxygen free copper welding cables from the engine bay to the cargo storage area, and I bought this excellent battery box to store the new battery in and secured it with nice tie-downs in the cargo area. www.amazon.com/gp/product/B097245WV6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I also added a nice in-line ANL fuse holder to ensure that I had a safe fusible link on the positive cable. Also used heat shrink with the copper end connectors to make it proper like and professional. www.amazon.com/dp/B00P0ZLZUE?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 Now my battery doesn't get exposed to the extreme temperatures of the engine bay, and I don't have to deal with ESS issues anymore.
Crazy though. I’ve seen and been interested in the dual main engine battery set up but haven’t taken that plunge. Yet I’ve not had any issues with my wrangler since and have oem batteries in the gladiator and still going with those. I too live in hot climates Arizona to now Alabama. So not sure the deal there.
Great video - Thanks for sharing. Changing mine out today. Got the Optima Yellow Top with 880 CCA and Duralast Platinum Aux from Autozone. They give a 10% Military Discount as well.
if you don't use the ESS system, or have a start/stop eliminator, you can also pull the F42 fuse (ESS fuse), and disconnect the negative terminal on the aux negative cable that connects to the main batt negative post, and never deal with the aux again. pulling the fuse and disconnecting the cable apparently disables the aux without throwing dash alerts.
Your aux battery might not be bad. I think your N3 fuse is smoked. Because there are two batteries, when you disconnect off the main, you will still have 12 volts from the aux battery (Test this if your Aux is not dead). So, if you ground the positive cable, boom, the N3 fuse is history and the aux battery can no longer charge, therefore, it gets discharged all the way. Anyway, I learned the hard way. Hope this helps someone.
The start/stop function and the warning light for it came on in my 2020 Gladiator two weeks ago. I took it to the dealership today and they replaced both batteries. They said the auxilary battery was failing but replaced both as a precaution. Reading on some Gladiator forum this appears to be a common issue and replacing the batteries appears to be a common solution. Unfortunately, I feel that replacing the batteries isn't correcting the actual issue just putting it off until the new batteries die like the old batteries.
Well, I haven’t had any battery issues with my gladiator. It’s been about a year and a half. Most of these batteries start failing at their warranty life span of 3 years. The reason I believe I have seen a couple issues on my wrangler is that it has never been used to drive daily the way most do. Before I handed it over to my wife, I drove it once a week. She drives it daily but rarely over 15 minutes each time. So really I just think over time those mopar batteries slowly die. How do you use your gladiator? Are you driving daily and over 20 minutes each way?
@@ExfilOffRoad I work from home so it leaves the garage a couple days a week for errands. Every other weekend I go on a trail ride for half a day or more. My Gladiator is under 10k miles so the limited driving does allow for discharge between driving and less opportunity for fully recharging. Arizona heat also eats batteries. I purchased the Gladiator new less than a year ago. Having said that, my 2013 JKU, obviously without start/stop, kept the same battery for three years with the same driving pattern. Upgrading the battery feels like the right first move but I "feel" like this is an issue with the proper charge being supplied to the battery. I do not have the skill set or tools to evaluate that though.
I think you removed 2 "studs" or something from your old battery and screwed them into the new battery as terminal connections. If true, what tool do I need? You say something on the vid but it wasn't enough for me to make sense of it. thanks much.
You need e bits. They are like the torque star bit female version so instead of putting the star into a bolt, the star fits around the bolt. Like a hex head only star.
What are the symptoms of the aux getting low. I have not changed mine yet but am dreading it. I will probably use this method although I hate to have to lift the car and remove the tire.
Typically your auxiliary buttons not being available. Your jeep will alert they are temporarily unavailable. When it gets even worse you can drive for hours and the battery will not recharge, auxiliary will still show unavailable.
I just had this issue with my jl.. I replaced the main battery today so now it starts back up fine but now my dash says start/stop is in protection mode so I guess I should’ve changed the aux battery too
If you remove the aux battery then connect the positive from the aux battery to the positive of the main battery then tie the aux ground out of the way you wont need the aux battery anymore. I removed my aux battery 4 years ago.
Yes the stop start still works because the aux battery is connected to the main. I dont have any issues with the stop start draining my main battery because I disabled the stop start as soon as I bought my Jeep. Ive never used it and will never use it. I run a winch and offroad lights and havent had any issues with draining the main battery. I did this 4 years ago and I have 120k miles on my Jeep with no issues.@@ExfilOffRoad
Thank you My question is when you reinstall your fender liner dose it snap back in? our do you have put new retaing clips in. I couldn’t tell when you were snapping the liner out if you are breaking the retaining clips with your tool
if you buy a mopar aux batt, they should come with 36 month warranty, and you can exchange it with the dealer for free, practically indefinitely as long as it fails before 36 months and you keep your receipt
