Auto stop/start function not working

So I’m paying big $$ for a car that I have to push a button to override a feature they promote when you buy the car? No - they should have insured that this was going to be a feature that is safe AND doesn’t kill the car. In my research - normal stop/start on a car is 50,000 but with this feature it dramatically jumps to 500,000! so not only is it wear and tear on a battery (which they did not warn me would happen) - it causes tremendous issues on other parts of the car as well! Look it up! That the battery is gone in 2 1/2 years is ridiculous! What a great feature the stop-start is - NOT! I won’t get a car with that feature ever again! It’s crap!

I guess I am missing something here. I start my vehicle and I can push the cruise on and off button and the seat heater button ( if needed ) and turn on lights if it still dark enough that I don’t feel comfortable with just DRL’s. Adding a button to cancel start/stop feature does not seem to be that difficult.
I am actually surprised that Debra did not have to pay a prorated charge for the battery as they like tires have a separate warranty of their own.

Point is it should be the other way around. Press the button if you want to use it, not every time you start the car. See the thing is though its a political thing to force people to use it.

Ideally it would remember which option you selected, auto on/off or not, so you’d only have to make the selection one time. That seems the best compromise. When I select “FM” on my car radio, it remember that’s the station I want to listen to the next time I drive.

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You’re not alone. I read an article on the subject recently, and apparently some will stay energized even after the car is turned off. The article posited the theory that apparently since the engine turns off when you stop the vehicle people think it’s totally off and leave it that way when they go into the house for the night, but that would seem to me to want to start then engine occasionally during the night to recharge the battery.

Anyway, whatever the reason, your problem seems to be common to some of the stop/start systems.

yeah me neither - interesting about at night :o - geez! no wonder … thanks for the info!

I so agree - why should I have to turn the feature off every time I get in the car? Why not make it the other way around! For the $$ the car costs … Or build your car to support this feature - the entire car … now I’m glad it is a lease and in a few months it won’t be my problem! For sure, it won’t be a feature I’ll ever get again :slight_smile:

here we are a week later and the stop start is working fine as is the shifter
my friend dropped her car off yesterday and we’re waiting to hear what the dealer tells her
AND in the interim, a friend of hers is now having shifter problems on a jeep that’s only 6 months old!
hmmmmmmmmm

been driving the car regularly since the repairs and all is fine - replacing parts on shifter and a new battery has finally addressed the ongoing issues!
BUT a friend of mine with same car and her friend are now having the very same issues - off to the dealer they go but with more information in hand so hope they are fixed quickly without too much hassle.
thank you all for your help!

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Reset the bcm via obd need good quality scanner the main dealer should sort it out

They need to reset the bcm voltage

This is a 2 1/2 year old thread.
The start/stop “feature” is used by numerous manufacturers, I assume to increase their city gas mileage rating. Again, assuming (yes, I know what ass-u-me means) they it make the default setting for the same reason.
The downside many drivers do short trips that do not provide enough time for the battery to be fully recharged.

Correct. Short trips aren’t enough to keep a full charge on the battery. I’ve found that attaching a Battery Tender Jr. while
the truck isn’t in use is helpful in getting this feature to work.

2016 V6 Jeep Cherokee 32,000 miles. STOP/START draining battery. Can you override this system somewhere? New battery installed a few months back, however after 5 days of car sitting it barely starts. After 10 days it is dead. Car sits at airport and I come in late sometimes, so this is very scary. Dealer says battery shows charged, can’t find a problem. Dealer says tow next time, don’t jump. Stop/start says numerous times, like other posts, unavailable/battery charging. Light came on saying Stop/start needs serviced, but back of again later in day. I am getting a compact portable battery charger to have on had. From all I have continually read, it boils down to the STOP/START draining the battery when the car sits. WOW, what a great design. SO, can I pull the fuse/disconnect on this thing at the battery junction and just leave the system off? Dealership said disconnect the battery every time you leave it…SERIOUSLY???

I have a 2015 Cherokee with the same issue. To answer your first question, there should be a button on your dash somewhere with the letter A within a circle. This is the button to enable/disable the stop/start function. The overlying problem is that modern cars drain batteries while parked due to draws from the alarm, automatic satellite updates, etc. so even when it’s not running the battery is being discharged (the stop/start itself is not draining the battery while at rest). Also, this feature works off a battery sensor which determines when the battery is warm enough/has enough charge to enable the feature to work; it’s possible yours is defective, although it may well not be. It’s also possible you have an issue with the charging system. The bottom line is 2 different dealers told me that the car basically needs to be driven some every day to maintain enough battery charge for this feature to work. Otherwise, you can use a battery maintainer to keep the battery charged enough.