Horrible Jeep Wrangler Aux Battery Elimination Update

[@dos0711]

Zero issues with the cable removed and F42 pulled.

[@randallupton3622]

For what it is worth I ran that stop/start eliminator for 3 years with no issues. I did replace the batteries after 3 years. But didn’t have to mess with the stop start.

[@GMS-jt3nn]

Installed a Tazer and have been pleased with the result. It not only remembers the last auto stop button setting but addresses annoying things like the seat belt ding, 3 honk alarm and auto fog light shut off when the hi beams are enabled.

[@dennisr7452]

That was a great explanation of how the start/stop works and what to do with it if you want/need to eliminate the feature. If I remember correctly the negative cable location for auxiliary battery is now the inner cable. I think it was changed in 2021 or 2022.

[@MarzNet256]

The aux battery is in parallel with the main battery, so the system can't easily see it if it's disconnected. The theory is these act like one larger capacity battery to better tolerate the ridiculous start stop "feature". As you mentioned, the smaller battery can start to suck down on the larger one which is basically a parasitic drain. The whole thing is silly IMO.

[@DatingandMarriagePodcast]

Did the same delete to my 18 jl a few months ago and here’s what I’ve noticed. Definitely does not take away the stop start function as mentioned. I still press the button every time I get in the car but oh well. Recently I’ve been having some start up issues. About 60% of the time I’m fine. But I’ll get a single click with no start up. Give it a few minutes and it’s all the sudden fine again. Also, if I leave the automatic start stop on, I run the risk of getting stuck at a stoplight. Car will shut off, attempt to start up but kills the engine and I’m stuck for about 30 - 60 seconds, then fine again. Maybe old battery? Maybe starter components? Not quite sure.

[@robmotiveplus]

Sounds like it's time for a new battery to me.

[@milwoodhughes670]

Thank you thank you. Especially for the follow up. I think the problem is for us who leaves the vehicle sitting for the week and driving the old Suzy all week long

[@371kenny]

Take the aux battery completely out. Take the positive cable off the aux and put it on main. Tape up the aux battery negative. Tazer mini to turn off the auto stop start. Done. No problems.

[@FM-ig3th]

My love my eTourque..no aux battery.

[@splitchest9566]

The auxiliary battery powers essential equipment like the engine start/stop system, and other systems that need power when the engine is off. This helps to reduce strain on the main battery and alternator. I don't know if the auxiliaries are then going to use the main battery or stop functioning?????

[@ssnydess6787]

I have a 2018 JL Wrangler Unlimited that I purchased in 2017. I have had two cycles of replacing both batteries (I live in Arizona and the heat is death to all batteries) after the the second double battery replacement, I got the indication of the stop/start feature inop/off fault on every startup. The Jeep rep said at the time, that it would reset after a couple cycles, which it did not. Also, at this time, I did the aux battery disconnct that you described with the ground and fuse. After about a couple months, the Jeep would not start as the new main battery was discharged. I put a battery charger on it and reconnected the fuse and aux battery cable. Now I get a message on startup that says "Aux switches Temporarily Unavailable Battery Charging" every time I start up, which doesn't give me a good feeling about driving any where I might get stranded. I plan on taking it into the dealer and have it checked out since it appears their battery replacement may have shorted or burned something out. That's been my experience. If anyone has had a similar issue, please let me know if or how you fixed it? Thanks!

[@robmotiveplus]

It really is a horrible system! Unfortunately there is no solution to make it function properly that I've come across!

[@Globe2274]

It's insane that GM does have a warning or error code for Aux Battery. My error code reader saw nothing. I was freaking out wondering if this problem is my Alternator, is it my starter, is it my primary battery, is it a mystery electrical issue? I finally tracked it down to the aux battery. Come on GM!

[@robmotiveplus]

GM?

[@Globe2274]

@@robmotiveplus Jeep...my bad.

[@roymoon1]

The main battery is still the old lead acid type. It can't handle the type of drain downs of the auto stop. Auto stop will shorten the life of a lead acid by about half. That's why the aux batter is Advanced Glass Mat type. They can handle the pull downs of auto stop. Now if you switch your main battery to AGM you shouldn't have any problems. Most new cars use AGM because of all the computer modules that still run after you turn off the engine for several minutes. So pull the fuse and pony up the big bucks for a full size AGM and you should be golden.

[@thebigbail]

AGM = absorbent glass mat. (Which is an advanced type of lead acid)

[@correfe]

If you don't want the auto stop start feature, just put fuse 42 back in. The only issue is that you will have the warning light to service the auto stop start AKA " AVENGERS LIGHT". This is how i run my Jeep and never had any issues. I used to have fuse 42 out, but I kept forgetting to press the stupid button. - I hate this stop start system.

[@dlmyrs]

5 aux batteries in my 2020 Gladiator and still failed I did the delete. Terrible system to cheat on EPA fuel mileage.

[@barrycroucher9854]

This is just crazy. I have a 2022 Gladiator and I removed the battery cable (the smaller one with the post attached) and the fuse. And the auto start / stop still activates !!!!

[@robmotiveplus]

It’s running off the main battery.

[@barrycroucher9854]

@@robmotiveplus So how do I stop the auto start stop from running off the main battery.

[@metthem88]

​@@barrycroucher9854you gotta push the button every time you start the jeep

[@marygrill653]

I did the delete recently. It got rid of the icon on the dash. At a stop light a message came up to put Jeep in park then select gear to drive. Also the D was flashing. It wouldn’t go forward until I put it in park, then D.

[@roymoon1]

PS we rented a new car in Vegas in March. The odometer had 2886 miles on it and the computer reported that auto stop had saved 174 miles of gas in that short time. That's 5%. Nothing to sneeze about.

[@farklestaxbaum4945]

Yeah it doesnt matter if the defective auto stop system kills your battery and you cant start the car

[@EricTheOld]

Tell me about the grill on the wife's Jeep please

[@robmotiveplus]

What would you like to know?

[@EricTheOld]

I'd like to know where you got it because it would contrast nicely on my wite JT It's Slick without being obnoxious like the angry bird grill

[@robmotiveplus]

Just search “grille” on the channel. I don’t recall off hand.

[@jamesnorris5568]

Will this same process work on a 2021 Jeep Grand Cherokee and pull F75 Dual Battery fuse ? Then attach aux neg/ pos to mai n battery.Wanting to remove aux battery completely and run off main battery. I also have a eliminator to disable the start stop feature.

[@robmotiveplus]

I can't say. I've never tried it on a Grand Cherokee.

[@carolynharmon7074]

Not sure you call it this or not, but I like you as a Bobblehead Rob in your thumbnails. 😃

[@robmotiveplus]

Thanks! I call them “big head” characters 😁

[@gparroz3288]

If you turnoff the stop/start function with tazer, why is there a need to remove wiring?

[@robmotiveplus]

The Aux battery will still draw from the main battery.

[@cmh2111]

It will draw from the main battery/alternator for charging, but since there is never a load put on it, it shouldn't be an issue.

[@allenphillips6442]

@@cmh2111 I have a Tazer Mini on my 2021 Wrangler JLU Ecodiesel and with 5035 miles my main went dead. Replaced both the Aux battery and the main with an AGM battery. We will see. Still on wait list for the recalled high pressure fuel pump. Unbelievable!

[@cowelk]

@@allenphillips6442 Check another dealer. The HFP has been out for months. I had mine replaced last year.

[@dawnpennington6556]

Rob have you had trouble with either jeep as far as corrosion on any of the latches? I had to paint all four doors and latches on either side of mine.

[@robmotiveplus]

Nope, I never have.

[@gparroz3288]

What does everyone see on the voltage gauge during normal driving ? My gladiator is at 14.0v minimum all the time. This seems high to me

[@robmotiveplus]

Mine is usually 14.3-14.7.

[@farklestaxbaum4945]

12v systems usually run at 13-14v volts when the alternator is running and actively charging the battery.

[@WreckedBrewery]

I'm considering that Auto Stop-Start Eliminator. It is $99 though so I'm in no hurry atm. We'll see how long it takes for pressing the button every drive to annoy me lol.

[@robmotiveplus]

Lol! If you’re like me….not long!!

[@WreckedBrewery]

@@robmotiveplus haha I think you might be right.

[@vavendano2000]

i have an auto start eliminater on my 2021 gladi, no more need to press the button. should i still pull the auxiliar battery?

[@robmotiveplus]

If you’re not having problems I wouldn’t.

[@vavendano2000]

@@robmotiveplus but does the auxilary battery still draw off of the main battery? If so wouldnt it be better to just pull it out now?

[@robmotiveplus]

Yup.

[@vavendano2000]

@@robmotiveplus thank you rob. Your the best. I also have another question....what does pulling fuse 42 do if you already eliminate the aux battery? Is it something i still need to pull as well?

[@robmotiveplus]

I wouldn’t think so…but I never removed the battery.

[@chinothedreamgiver1629]

👍🏼