Jeep Gladiator (and JL) Auxiliary Battery Bypass (Single Battery Conversion) No More Dead Batteries
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- เผยแพร่เมื่อ 11 มิ.ย. 2022
- After having battery issues with my 2020 Jeep Gladiator Rubicon, I did a little research to see if I could pinpoint the problem. From what I can gather, the smaller auxiliary battery had gone bad and was brining down my main battery.
Since I used the Tazer to keep the auto stop-start feature disabled on my JT, it stood to reason that I should be able to bypass the smaller battery altogether. So, that's exactly what I did with great results.
Here's the link to the battery I used: www.autozone.com/batteries-st... - ยานยนต์และพาหนะ
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Yep my wife's 2020 Gladiator has the same problem and the dealership is incredibly unhelpful. Thank you!
What did you do?
I have a 2020 and I’m having my batteries swapped this Saturday for the second time I have the tazer doing the same thing I’m gonna delete it just like you did I’m tired of this auto start error bs!
I did this mod about 2 months ago. Both batteries were replace at the dealership
a few days before I did it . I have a Tazer mini installed as well. I have had to jump it on 4 occasions after sitting for 1-2 days over the weekend .
Are you saying you have to jump it after the swap? I’ve had mine in for months without issue. My Gladiator just sat for nine days while I was on vacation. Fired back up no problem.
@@Ali_Mansour_Editor yes I’ve had to jump it after the swap. It’s currently sitting in my garage waiting to be jumped. I didn’t want to mess with it yesterday . I’m starting to wonder if it’s the Tazer. 2020 JL
@@davidjoseph0317 to be safe, I would do the latest firmware update for the Tazer and charge to battery to 100-percent. There shouldn’t be such a big drain that your Jeep should die after two days. I know the JL and JT both have a small amp draw when they are off, but nothing that would kill it in a short amount of time.
@@Ali_Mansour_EditorI did it a few days ago. We will see if that was the issue.
mine did this about 3 months ago. had to change out all batteries. now i come out and that light is on. but my jeep did start. idk so idk either. have a ton of crap on it. thought it was the stereo upgrade i did but the guys checked it all out and said it was the automatic steps i have on it. but the jeep guy who installed this said it wasn't that .... but i just turn it off when im not using it. not sure what to do. i do like this idea. or go with a genesis system but dang so expensive. i couldn't even get it jumped so had to pay out of my pocket for the batteries that time. now damn light is on again. just praying it doesn't die on me again. before i can get it in or either i just this idk
Awesome, thank you for sharing !!!
We would really appreciate a step-by-step video on how to do this as well as the specs and name of that big battery you put
The link to the exact battery I am using is in the description of the video. I have a friend that wants to do this conversion on his Gladiator. If I can, I will film the process on his.
@@Ali_Mansour_Editor we waiting you
@@AhmedAlnaabi My friend installed his before I could get over to film it. I'm sure I'll get another opportunity as this is a common issue among my group of friends with Jeeps.
Let is know when that takes place, definitely the year of his Gladiator.
Nobody knows what you're talking about or what a taser for a vehicle is, just a waste of time watching confusing things that you don't explain a damn thing
Great video!Every other new car in the world has the auto stop feature and they all use one battery ,so this will work just fine!Thanks for showing.
Thank you.
My BMW's and Mercedes both have an aux. It seems like it's just a profit center for the dealer to sell things to helpless people.
Exactly the fix I've been looking for. Thanks! I have a 2018 JL Rubicon with the Tazer JL Mini installed. What happens if you for some reason turn the Auto Stop Start back while those connections are on the main battery? will it damage anything?
It should not damage anything. You may get the stop/start warning light on the dash if you try and use it, but I can’t say that for sure since I always keep mine off.
@@Ali_Mansour_Editor Ok. Thanks for the quick response!
@ali_mansour_editor - Thanks for yet another informative JT video. My 2021 JT Mojave failed to start yesterday as my wife & I were about to head off to church. My wife's Toyota Highlander got us there.Of course, after church, lunch, & returning home, my "go to" was TH-cam (is there anything that needs to be done that cannot be found on a detailed YT video? LOL!). My JT entered service in May of '21, so although I'm just over 37K miles, I have a few more weeks to reach the "36 month" service entry ending timeline. Some YT videos proclaim that the AUX battery has a 36-mo FREE replacement warranty. Would be nice, but IDK. However, I do have an extended warranty on this JT, and I'm curious whether bypassing the AUX battery will void any portion of my extended warranty? Also, If I replace just the main battery while at the parts store, will I be able to get her home without changing or removing the AUX battery until I get back home? I'm aware that a dead AUX battery will eventually drain the main battery as well, but how long will that take? Anyone who knows, please feel free to reply here.
I can’t address the warranty stuff because I honestly don’t know. However, you can install a fresh battery without removing the AUX battery and drive around like that until you get a chance to pull the other one. That I do know will work. I personally would just bypass the battery, but that’s something you might not need to do since you have the extended warranty. Let them put another one in there and you might get another few years without an issue.
@@Ali_Mansour_Editor - Actually, MOPAR is saying that the basic 3yr/36K (whichever comes first) applies to the batteries. So, the warranty extension won't apply with me at 37K. I'm still wrangling with MOPAR on that, because of mixed messages coming from their Customer Service. But, I need my truck & need to get her going without further delays, so I'll be buying the parts & getting dirty. Thanks.
@@Ali_Mansour_Editor Interesting update: although I disconnected the aux ground cable, and removed the fuse, & installed a new main battery, the start/stop system is still operational. How can that be?
My 2020 JL has had issues with the auto start/stop from the beginning. Still using the warranty trying to leverage the dealer to address the issue. Not a fan of the auto start/stop but voiding the warranty does not seem like a good plan!
There is no such thing as "voiding the warranty." Only a court can void a contract.
Hi. thank you so mulch for your video. It's short and very awesome! I have never seen a video like this. just a KEY POINT. May I ask you a question? You told us that if you have a 2021 jeep or newer, you do have to connect the original ground(the small aux battery) to your the main battery's or you will get an error. My point is that the small battery's positive terminal is the main positive and the small battery's negative is the main negative terminal. if 2021 jeep. Am I right?
The newer Gladiator's and Wrangler's aux battery negative goes from the battery to the firewall then back to the battery. The 2020 and older models only runs from battery to battery. My friends at Genesis Off-Road (which make a dual battery kit for these platforms) were kind enough to share that info with me.
@@Ali_Mansour_Editor There is one thing for me not to understand. can I leave the auxiliary battery's negative terminal disconnected? or connect it to the main battery's negative? I'm user 2021 JL wrangler rubicon. thank you very much.
@@user-vr5rk9cd6s If you see that the negative goes to the firewall, then connect that aux battery lead to your main battery. If it just runs from the battery to battery like mine, you can just tape it up and leave it unhooked.
@@Ali_Mansour_Editor best of best TEACHING. thank you very much. I'm so happy to meet U.
Do you have a video step by step how you take out the small battery and connect everything into the big battery?
I do not unfortunately. It’s really fairly straightforward. Had I known this was going to be such a popular topic, I would have shot the entire install.
I just did this exact same thing.
@Ali_Mansour_Editor You say you ran the "power cord" to the positive post on the battery....I assume you mean that you hooked the Positive cable from the Aux batter to the positive on the main battery? is that correct?
That is correct.
Question I did everything to the T on my 2020 JLU Rubicon including using the described battery. Since a 2020 not a 2021 I taped off the aux negative. It ran fine till the larger battery now 12 codes, crackling noise a steady TMPS light and ck engine light. Oh I also used a Tazer to turn off the ESS. Any help would be greatly appreciated!
It’s possible you have a late 20 build, which means you need to attach your negative cable to the main battery. I have a feeling that’s all your issue is.
So Genesis says this is the method they use for their DBS. I went ahead and did this mod yesterday. Went well. The adapters under the fuse box were a bit tricky to remove - I found by getting my hand underneath each one and wiggling from side to side got them out. After that it was pretty striaght forward. Putting it all back went easy. I taped up the AUX neg lead and left it in the AUX battery box. I attached the pos lead from the AUX to main pos terminal by flipping it upside down like you did here. One question I have is if I need to jump start the vehicle, can I now just attach the jumper cables to the Main battery pos/neg like normal correct? My next mod will be to disable ESS by disconnecting hood latch warning sensor and skip the extra $300 for the Tazer.
Correct. If you need to jump start your Jeep, just correct the cables to the main battery post. From what I understand, if you disconnect the latch sensor and bypass the battery you will have a warning light stay on the dash and it will tell you Stop Start is disabled when you enter the vehicle.
@@Ali_Mansour_Editor Thanks. Yes i believe you are correct regarding warning lights but the dash is busy anyway and I pretty much ignore most of it (unless I need something specific) and just use the analog. I dim the dash slightly and it doesn't bother me and beats pushing the ECC button each time I start the vehicle.
I’m guessing this would work on the diesel model too? I’m curious about the replacement battery size though.
I don’t have any experience with the diesel Gladiator. I’m not sure if the battery box is even the same size.
I’m about to change out my main battery. I don’t use a taser but I do have an inline module that disables the stop/start. Do you have to use the taser to disable ? can I bypass the small battery also. I have a 2019 Gladiator
If you have a module that disables the stop/start, you should not need the Tazer. You should be able to do exactly what I did here.
I ran an AGM, lasted roughly 18 months. The factory alternator doesn't crank enough volts. I'm told AGM like 14.6+. This jeep puts out 14.2 on high, but usually 13's
All of the Jeep Gladiators come from the factory with an AGM battery. Their charging system is designed for it.
Did you replace your AUX at the same time because if you didn't in many cases it will kill the new battery. Batteries that are wired together are single battery systems. You can't match old and new batteries without having problems.
Great video, I will be doing this tomorrow morning. I have a question. I usually turn off my start stop. What will happen if for instance my wife happens to drive my Jeep and does not turn off the start stop? Will all the systems function as normal? Thanks Brad.
It should work fine. If anything, she might see the stop/start light pop up, but that’s it.
@@Ali_Mansour_Editor Can't believe they canceled those magazines you contributed to. I live in NC. and frequent Carolina Beach. Did you do this to your Jeep? Any other concerns I should have? I have a 2020 JTR.
I miss the print magazines as well. I’ve done this battery conversion to two of my Jeeps and helped a few others do the same to theirs as well. It works great. Zero issues.
I used the Vgate icar ODB II to bypass the auto start stop function....although it doesn’t stay connected I assume as long as the
auto start stop has been bypassed thats doing what the Tazer is doing?
Correct. So, long as the stop start is bypassed, you should be fine.
I just did the delete on my son's 2020 Gladiator. I pulled the E42 fuse and then disconnected the ground from the big battery. I still have the light on in the message center. I didn't connect the positive from the small battery to the large battery. Do I need to do this to get the light to go off?
I have not tried it like that. I would pull the second battery and connect the positive lead to the main battery. You should be able to replace the fuse as well. I’ve never pulled it on mine.
I pulled the fuse, disconnected the AUX battery ground, but did not disconnect the AUX positive cable. My start/stop system is still operating unless I push the dash button to turn it off. Make it make sense. ???
I would just go ahead and disconnect the power lead to the battery as well.
Any idea what the little black thing is on the negative side with a two small gauge wires I think it's red and a
I believe that is the sensor that monitors the battery health. Those lines run back to the firewall and into the cab if I’m not mistaken. I’ve never chased them down, but I believe I was told by a Jeep tech that that is part of the battery management sensor.
So do I HAVE to run a tazer to be able to eliminate the smaller battery?
Or would I need it before doing so?
All the Tazer is doing is telling the computer to remember to turn off the stop/start feature when you crank up the Jeep. You should be able to do this without the Tazer, but you will need to press the button every time you get in. It’s possible you will get an Stop Start error light on the dash without the Tazer. Can’t say for sure.
When doing this, do I need to pull the fuse for the Aux battery? I plan on doing this instead of going the Tazer route. Or do I need the Tazer as well as this process?
I've never pulled the fuse and I have done this conversion on a few Jeeps. If you don't get the Tazer, you will have to press the stop/start button every time you crank the Jeep.
Ok so it's been 3m now how is it holding up? Is the battery still good? Is it still not showing any code issues? I just had my batteries replaced and it went dead less than a week later
Still working great! I just drove cross country (6,200 mile round trip) and it’s working perfectly.
Hi man. I completely removed the aux battery but the start stop function still works. This is fine?
I’m surprised it’s still working. It’s only pulling juice from your main battery. So, if that’s healthy, it shouldn’t hurt anything. I would just turn that feature off if you are concerned about it.
I am curious. If I have to take mine into the dealer and unmarry and remove my taser mini, and at a stop light the stop start stops the engine because I forgot to turn off manually at each start, will it still start up just fine with only the main battery?
The honest answer is I don’t know because I have not tried to replicate that scenario. It should work without issue. My assumption is the auto stop start simply would not work and you would get the Stop Start error light on the dash.
@@Ali_Mansour_Editor Makes sense, thanks!
Its a shame this can’t function as a way to charge a secondary battery like a dual battery setup
Did you have to modify or remove anything in order to fit the H7 battery?
There is a small plastic retainer that sits at the bottom of the main battery tray. This is not the battery hold down, but rather a piece that is towards the air box. You just need to pull it out. That will allow you to drop in the wider battery.
So I have a 2021 Mojave gladiator. I also run the Taser. So all I have to do is run the Positive and negative from Auxiliary battery to my main battery since its a 2021? That's it ?
You just need to trace the negative wire and see if it goes directly back to the main battery. If it does, all you have to do is tape it up. If it splits off to a body ground, then you'll need to connect it to the main battery.
What else does it affect other than auto stop start? Can you still start you jeep with the phob?
Everything works exactly the same as it did stock.
So attached leads to aux battery to main battery , long term has fixed all battery issues & has alternator been okay?
If it’s a 21 or newer, you have to connect both of the aux battery leads to the main battery. If it’s older, you just need the positive lead connected. It’s still working great. Zero issues with anything electrical.
2020 it should still be under warranty? Did the dealer not replace for free?
I wouldn’t let my local dealership refill the air in my tires. Much less swap a battery that requires this much work under the hood. I’ve had a pretty terrible experience with them, so I just do the work myself when it’s something like this.
How long have you had the battery this way? Have you had any issues? Or sensors popped up
I've had this done for around 9 months. It's still working great with no issues.
Do you need to pull the aux fuse out after you uncable the auxilary batt?
I did not pull the fuse. Never had an issue.
So you replaced your main battery for another. How does this help with deleting the auxiliary battery?
I completely deleted (removed) the second battery. What I’m showing you here is that the auxiliary battery power wire is now connected to my new main battery which is larger than what came in the Jeep stock. This is the second time I’ve done this. so, I just wanted to put together a quick video to let people know that it can be done and how to do it easily.
I did the same thing to my 2018 JL two years ago. I didnt connect the ground and ive never gotten an error code.
Did you go through the fuse box? I hear it's easier to remove the inner fender well and drop the aux battery out from the bottom.
Saves having to remove the fuse box
@@lonewolf4827 You need to go through the fuse box because youll be bringing the pos and neg cables back up that way.
Thanks for video! Do you have to remove the smaller auxiliary battery or just tape it off where it connects to main positive battery terminal? Thanks again!!
I would remove it. You'll need to pull that cover panel to access the wires anyhow.
@@Ali_Mansour_Editor thank you!! 🙏🏻
Question and please excuse my ignorance. Why do you connect the positive and tape off the negative. Shouldn't the negative also be connected also. I`m new to this aux battery thing. My auto start stop isn`t working. Gives me a service start needs service. Also the fuse 42 disconnect is that required on a 2020 Jeep JL, I do not have the Tazer either. Thank you everyone
The reason is because the negative cable that connects to the small battery is just a cable going from the big battery to it. So, by connecting it, you’re just making a horseshoe. There’s no need for it.
@@Ali_Mansour_Editor And the #42 fuse
I did not disconnect the fuse as it is not required on the Gladiator. Not sure why there would be something different with the JL.
What if my jeep a 2019 wrangler doesn’t have 2nd battery from factory
Then you don’t have anything to bypass. I think E-torque models are all single battery Jeeps.
Did your auxiliary batter have a black box relay on it and if so what did you not to put it back on?
Mine didn’t have anything on the battery. Just the two leads going to it.
@@Ali_Mansour_Editor that sucks mine is a pain but thank you for your reply
Will doing this disable the remote start? Sorry I’m new to all this haha.
No. Does not impact that at all.
Where do you get a tazor
It’s from Z automotive.
Does disabling the start / Stop void the warranty?
Doing this mod does create the potential for the dealership to deny warranty to things that pertain to the battery. They are not going to deny your rear axle breaking because of this, but it's possible they could give you a hard time if you had something electrical malfunction. It usually all comes do to the service writer at the dealership.
This is what the service manager told me, don't know how much of it is true. The pcm will show it being flashed from the tazer and will void the oem warranty. I'm not going to take the chance with one until it is out of warranty.
Some guys are pulling the fuse 42 as an extra step from what I read. Is that something you think we need to be doing as well? Thanks.
I have not found that to be necessary.
@@Ali_Mansour_Editor OK thank you.
@@Ali_Mansour_Editor i pulled fuse42 to keep away from pulling the positive from the aux bat… i did however removed the negative cable from main battery that belongs to the aux and just put it to the side with electrical tape. Car runs normal, i did this a few days ago. Could that cause any problems?
@@Brown-papi the honest answer is I don't know. From what I understand, pulling that fuse won't allow the computer to talk/check on the AUX battery. I was also under the impression this would give you the stop/star error code and light. I've only ready online where others have pulled the fuse and negative cable. I don't know of anyone personally who has done it. Everyone that I have encountered with AUX battery issues has done what I have. It's pretty easy to just remove the AUX battery. So, I would do that regardless if you want to keep the fuse pulled.
@@Ali_Mansour_Editor the only problem i noticed is that when you pull up at the light and the car turns off, the jeep asks to put the jeep in park to keep then back to drive to keep driving. Is the reason why they recommend to make sure you press the avanger Botton. You can also use the tazer to prevent this from happening to turn off that auto stop/start issue.
Does the remote start still work???
Yes.
can you explain the taser thing more
The Tazer is a module that you plug in under the dash of your Jeep. The one I have cost a little over $300. It allows you to modify things such as tire size, gear ratios, and in this case, let’s you turn off the auto stop start permanently. It’s essentially pressing the off button for that feature for you every time you start the vehicle.
Do you still have to pull the fuse?
I’ve never pulled the fuse.
I don't understand this. Many people say to pull the F42 fuse, and then to take the black cable with the 13mm nut off of the ground of the battery and leave the other one on (the one with the smaller nut that takes both cables off)..
And they say this disconnects the AUX battery and turns the ESS off.. but when I do this, my vehicle has no power when the cable that they say is the aux battery cable is not connected to the ground.
I don't feel like going through all that work to take out the aux battery..
but I believe that my aux battery has died and is now draining my main battery. I could take it to the dealer and get it replaced but I am selling a lot of stuff on eBay and I don't want the hassle of a dead car and being unable to drive right now.
I've never pulled the fuse. You do need to pull the AUX battery so you can attach the positive lead to the main battery. If your Jeep is 21 and newer, you will need to attach the ground from the Aux battery to the main battery as well. I've done this exact swap on multiple Jeeps and have been running this way for YEARS with no issue.
Did you have to pull fuse 42?
I did not.
@@Ali_Mansour_Editor thank you!
I have a 21 gladiator. I replaced the main battery. Now my climate control wont work.. It just says Climate Control Off.. What can I do?
I'm not sure why that's happening. I would start checking fuses.
Mine has many warnings coming up now. Dang
From the battery conversion? You may need to attach your secondary ground as well. That seems to be the only difference for some Jeeps. I've been running this setup on two different Gladiators for over a year with zero problems.
Ali, question. Before removing aux battery and doing bypass does auto stop start need to disabled? Or it will cause issues with aux disable auto start stop before removing aux battery?
Btw I hate auto start stop. I do no have a tazer at this time, however I removed the switch under hood so I do not tneed to turn off auto/start/stop each time I start the JT.
If you are not going to install a Tazer, you will just need to press the auto stop start button on the dash every time you start the Jeep. I actually had to remove my Tazer module the other day. I didn't have any issues.
Remove fuse 42
This still working fine?
Yes. I just did this same mod to another one. Zero problems.
@@Ali_Mansour_Editor for the life of me I couldnt get the fuse box off. I removed the 4 bolts but all the plugs underneath still stuck on. I couldnt find release tabs for them.
@@apwrealty you have to really squeeze the clips on the plugs to pull them off. It’s a little bit of a pain for sure. You could also pull of the fender and access the battery box from below. I know others have done this method, but I have not.
@@Ali_Mansour_Editor for sure. I was going to access it from the fender, but can’t get the wires up to the new battery if i do that. Would just have to replace the auxiliary battery in that instance. (I think, at least)
@@apwrealty I have never done it from that side, so I don’t know if you would have ability to pull the wires up.
I saw you replaced the Main Batt with a larger version. Is that necessary, or can you simply use the stock Main?
It is not necessary. I just did it to get a larger capacity battery under the hood.
Would this be a problem if I didn't have the tazor or any thing of that sort?
So long as you press the auto stop-start button every time you crank the Jeep, I think you would be OK. However, I have not tried that.
@@Ali_Mansour_Editor just connected to one battery, will update over time
@@migueldelafuente7857 how’s it going so far?
@@migueldelafuente7857 update ?
@@lifeoutdoors3953 so far so good followed these steps and taped up the ground from the aux I’ve been watching my battery and has been starting fine however I have aftermarket headlights and at now from time to time I see them flicker but that’s pretty much it
Very confusing video, so u got two large batteries now?
No. I removed both of the factory batteries and I’m now just using the one large battery you see here in the video. If you click the link the video description you’ll see the exact battery.
my 2021 same damn thing. battery went dead on me change out both batteries. and go out to go get rear axels put on this am and bam light is on A!... jeep did start up but for how long idk. sick of this bullshit. call up to the dealership and service department acts so dumbass about it. when there is a ton of people a ton having same damn issues. so sick of poor quality!! why for heaven sakes would you put in a motorcycle battery in a jeep. stupid and in such a difficult place to get to how damn stupid sick of stupid shit. sorry many just tired of bs
so i have a ton of lights amp for stereo, winch, automatic steps ..... so i upgraded to a bigger alternator as well to help out with all this. but now im have all this dying batteries. what is your ideas????
Did you get it fixed?
Awesome... A step by step instructions will help. Can you do us a big favour please
I have friend that wants to do the conversion on his Gladiator. If I can, I will film the process on his.
Junk that battery brand! Always failed on my street sweepers. Go with Interstate if possible.
I've never had an issue with these batteries. I'm not advocating for or against. Just what I went with.