Auto Start/Stop Not Working

[G-722370]

Ihave a 22 SX and it works much better when I turn the AC fan off.

 

[Point37]

a battery to keep a warranty intact?...sounds like fvckery to me

 

[dwt]

I don't mind the ISG. But when it stopped operating at the usual stops from work last fall, I suspected it was the fall/winter temps and AC cabin temps. Original battery, 2020, 87,000 miles. But, we went driving on some forest roads around Pikes Peak (Gold Camp). When I got back into Springs the ISG started working. Thought it was funny, but it's been working for the last 4 days. The only thing I did differently was play around in some big ruts and "Lock" the center diff. Spun the tires, couldn't crawl up a couple of big ruts, got the wheels to cross up and spin. Tapped the brakes to get the wheels to stop spinning, I believe I heard the ABS kick in. Backed up and tried a different line, played again. Usual backroad holes and ruts, but maybe shook it up to work again?

 

[Newbie KIA]

Hi everyone,

I have a 2021 SX AWD and the auto start/stop feature stopped working about a few months ago. I bought the car in July 2020 and it worked fine ever since. When I turn my car on the button on the center console to turn it off/on is selected as on. So the center console button is not lit. When I come to a stop at a stoplight the icon on my dash turns on as orange instead of green. And the center console button lights up. Even when I press the center console button to turn it back on my engine never shuts off.

I've read that there needs to be certain criteria met in order for this feature to work. And I've checked for everything except the battery. I have a hunch that there isn't enough juice in the battery or there might be something wrong with it. But even if it ends up being the battery it wouldn't make sense since I bought the car 1.5 years ago and I drive it daily.

Had anybody had this happen to them? Any advice would be much appreciated with gas prices lately. I'd love this feature to be working.

I'm also 800 miles from my next oil change so if I can't figure it out, I'll just have the dealer take a look when I get my oil changed.

Consider yourself the luckiest person ever. I usually have a private mechanic hack that thing to turn disable the start/stop feature permanently. You are saving nothing in gas with that feature, nothing!! It is installed simply to meet some EPA numbers for emissions. Look it up for yourself but anyone that really knows anything about cars will tell you the same.

______________________________

 

[PellyTelly]

Consider yourself the luckiest person ever. I usually have a private mechanic hack that thing to turn disable the start/stop feature permanently. You are saving nothing in gas with that feature, nothing!! It is installed simply to meet some EPA numbers for emissions. Look it up for yourself but anyone that really knows anything about cars will tell you the same.

This makes no sense what you are saying. Not running an engine uses less gas than running an engine. Automatic Start-Stop Tech Saves More Fuel Than You Think

You can no like it but I don’t think you can fairly say it doesn’t save gas.

 

[Nac]

This makes no sense what you are saying. Not running an engine uses less gas than running an engine. Automatic Start-Stop Tech Saves More Fuel Than You Think

You can no like it but I don’t think you can fairly say it doesn’t save gas.

"Not running an engine uses less gas than running an engine." That is true; however, according to a major engineering study by Argonne National Labs regarding vehicle engine shut off during stops concluded that although you may save gas you are highly unlikely to save any money with these systems. At best the maximum savings amount to $400 over a 10 year period and achieving that is unlikely. Even if the $400 max was achieved that savings does not make up for the additional cost of the system installed in the vehicle (included in the price of the vehicle) nor the cost of replacement batteries you will need due to the system abusing the battery with constant restarting of the vehicle.

Details for the Argonne study are in this video.

 

[TellmeyourWHAT?]

This makes no sense what you are saying. Not running an engine uses less gas than running an engine. Automatic Start-Stop Tech Saves More Fuel Than You Think

You can no like it but I don’t think you can fairly say it doesn’t save gas.

Every time you start your engine, you burn a lot of fuel - much more than just sitting at idle.
A comprehensive study was done that proved you had to be stopped for more than 7 seconds before ISG gas savings begin. Many stops are shorter than 7 seconds negating any benefit. Counter using ISG (and miniscule gas savings) with the wear and tear on the starter and battery, and the prudent driver will turn it off. I have.

 

[cyndaw]

I have the same exact issue and have asked the dealer on a couple occasions and the only answer I get is that all the conditions aren't met. My car is a 2020 Telluride and after about a yr of having the car it stopped working.
It makes no sense to me that this feature only works for a limited time and never again and no one has the exact answer.
It's very frustrating!

I had this issue, too. I had a normal battery replacement at exactly 36 months, and then the Auto off/on started working again...for awhile. I recently retired so am not driving the car very much and the Auto off/on quit working. I charged up the battery with a trickle charger and the Auto off/on started working. My Conclusion: the battery has to be fully charged either by doing a decent amount of lengthy drives or by using a trickle charger. Good luck!

______________________________

 

[MELISSAB]

Every time you start your engine, you burn a lot of fuel - much more than just sitting at idle.
A comprehensive study was done that proved you had to be stopped for more than 7 seconds before ISG gas savings begin. Many stops are shorter than 7 seconds negating any benefit. Counter using ISG (and miniscule gas savings) with the wear and tear on the starter and battery, and the prudent driver will turn it off. I have.

How did you turn this off? We've had our Telly for 4 years and somehow disabled it at some point long ago. The battery died and had to be replaced, now the auto stop/start is back. Help please, we hate this feature!

 

[TellmeyourWHAT?]

How did you turn this off? We've had our Telly for 4 years and somehow disabled it at some point long ago. The battery died and had to be replaced, now the auto stop/start is back. Help please, we hate this feature!

Sorry - I should have explained. I have to hit the button each time I start the engine to disable it. There is no OEM way to permanently turn it off, but there are some aftermarket options, one of which costs around $100 but looks pretty simple to install. This device is highlighted somewhere on this thread, I believe. I'll go look and update.

Found it

Autostop Eliminator for 2020 2021 2022 2023 2024 2025 Kia Telluride

This Autostop Eliminator is designed for Kia Telluride model years 2020-2025. The Autostop Eliminator will disable the auto-stop feature on your Kia Telluride

www.autostopeliminator.com

As KIA ain't about to offer a solution, I'll probably pull the trigger when my new ride arrives. You can jury-rig a fix for nothing. Just cut the tip end off of a plastic tie-wrap and wedge it down on the button which will hold it down.

 

[MELISSAB]

Sorry - I should have explained. I have to hit the button each time I start the engine to disable it. There is no OEM way to permanently turn it off, but there are some aftermarket options, one of which costs around $100 but looks pretty simple to install. This device is highlighted somewhere on this thread, I believe. I'll go look and update.

Found it

Autostop Eliminator for 2020 2021 2022 2023 2024 2025 Kia Telluride

This Autostop Eliminator is designed for Kia Telluride model years 2020-2025. The Autostop Eliminator will disable the auto-stop feature on your Kia Telluride

www.autostopeliminator.com

As KIA ain't about to offer a solution, I'll probably pull the trigger when my new ride arrives. You can jury-rig a fix for nothing. Just cut the tip end off of a plastic tie-wrap and wedge it down on the button which will hold it down.

Thank you, that's very helpful. I wish I knew why it stopped being an issue for us years ago. It absolutely came back with the new battery, but we've had this car for more than 4 years and I'd forgotten that this was a thing that happens it had been so long since it was doing anything.

 

[TellmeyourWHAT?]

Thank you, that's very helpful. I wish I knew why it stopped being an issue for us years ago. It absolutely came back with the new battery, but we've had this car for more than 4 years and I'd forgotten that this was a thing that happens it had been so long since it was doing anything.

There has been a lot written about the criteria for ISG to function properly - one of which is a healthy battery. I suspect that as your battery aged, ISG stopped working.

ISG is very sensitive to other factors also. I know that all last summer, when it was really hot outside and the car had the ac on, ISG would only work about 20% of the time. Switch to winter months, and I would guess it worked 90%.

______________________________

 

[blackhawkk22]

I recently took my 2021 SX in for an unrelated warranty issue and mentioned that my start-stop does not work. They charged the battery overnight and now it works. The SA said sometimes when the battery health degrades below a certain threshold, the car automatically deactivates the start-stop feature.

Funny thing is, I really don't like the start-stop feature. But I dislike it not-working even more lol. Now I turn it off manually every time I get in the car.

 

[MELISSAB]

There has been a lot written about the criteria for ISG to function properly - one of which is a healthy battery. I suspect that as your battery aged, ISG stopped working.

ISG is very sensitive to other factors also. I know that all last summer, when it was really hot outside and the car had the ac on, ISG would only work about 20% of the time. Switch to winter months, and I would guess it worked 90%.

That makes sense, while it's my daily driver I don't drive far. I'm 7 minutes to or from work on a heavy traffic day and most errands are even closer. I had issues with not driving enough the keep the battery at full strength with my Honda Odyssey as well but it showed very obvious issues where as this was such a convenient change that I didn't even notice. Thanks again.

 

[TellmeyourWHAT?]

That makes sense, while it's my daily driver I don't drive far. I'm 7 minutes to or from work on a heavy traffic day and most errands are even closer. I had issues with not driving enough the keep the battery at full strength with my Honda Odyssey as well but it showed very obvious issues where as this was such a convenient change that I didn't even notice. Thanks again.

Cheap price to pay for living so close to your work - having to buy a new battery every couple of years. I on the other hand live 15 miles from anything.

 

[pm23]

Hi everyone,

I have a 2021 SX AWD and the auto start/stop feature stopped working about a few months ago. I bought the car in July 2020 and it worked fine ever since. When I turn my car on the button on the center console to turn it off/on is selected as on. So the center console button is not lit. When I come to a stop at a stoplight the icon on my dash turns on as orange instead of green. And the center console button lights up. Even when I press the center console button to turn it back on my engine never shuts off.

I've read that there needs to be certain criteria met in order for this feature to work. And I've checked for everything except the battery. I have a hunch that there isn't enough juice in the battery or there might be something wrong with it. But even if it ends up being the battery it wouldn't make sense since I bought the car 1.5 years ago and I drive it daily.

Had anybody had this happen to them? Any advice would be much appreciated with gas prices lately. I'd love this feature to be working.

I'm also 800 miles from my next oil change so if I can't figure it out, I'll just have the dealer take a look when I get my oil changed.

Your battery is getting weak , It happen to me a changed the battery and everything was fine

______________________________

 

[PellyTelly]

Sharing for an additional datapoint. Purchased CPO 2021 SX in February with 14k miles. First 2k miles we put on it were all city/urban driving and auto start/stop never worked, not once. Just took long round trip from NYC to Maine and feature started working... Imagine it will stop working as vehicle returns to its ordinary routine of stop-and-go traffic.

 

[G-320297]

Has anybody replaced a windshield and this happened? I believe mine was working fine before the windshield was replaced. I mean I like the feature but it did take me a while to notice it wasn't working.

 

[Nac]

Has anybody replaced a windshield and this happened? I believe mine was working fine before the windshield was replaced. I mean I like the feature but it did take me a while to notice it wasn't working.

Auto stop/start has no connection whatsoever to the windshield. It is possible the people that installed your windshield fouled something that disables the start/stop circuit; however, that is unlikely. Its more likely that your battery needs a really good charge.

 

[garyrwest]

Battery sensor at pole is bad!!