2024 Hybrid - Auto Start/Stop not working

[Larrythelunatic]

Along the line of this thread, there are really only 2 things to remember:
1) Stop using the term “auto start/stop” in regard to our hybrids. It is strictly an EB term in our Mavericks.
2) The ICE will run when the batteries require a charge, regardless of how they have been drawn down. Whether the truck is going 0 mph or 100 mph. (Please understand that the ICE will also provide propulsion under the latter circumstances.)
It really is as simple as this.

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[DanaL]

Along the line of this thread, there are really only 2 things to remember:
1) Stop using the term “auto start/stop” in regard to our hybrids. It is strictly an EB term in our Mavericks.
2) The ICE will run when the batteries require a charge, regardless of how they have been drawn down. Whether the truck is going 0 mph or 100 mph. (Please understand that the ICE will also provide propulsion under the latter circumstances.)
It really is as simple as this.

Larry,
Do you know how to mark a thread as resolved or closed?
I got some amazing answers yesterday.
I completely misunderstood how the system works.
Someone told me about the Power Flow app. It tells you why the engine is running. Too much power needed, heater is on, all kinds of things. It's very cool.
It is fine. I'm thrilled with it and all the help I got here.
I'd like to let people know it's solved.
Is there a way that you know of?

Dana

 

[colinl]

Larry,
Do you know how to mark a thread as resolved or closed?
I got some amazing answers yesterday.
I completely misunderstood how the system works.
Someone told me about the Power Flow app. It tells you why the engine is running. Too much power needed, heater is on, all kinds of things. It's very cool.
It is fine. I'm thrilled with it and all the help I got here.
I'd like to let people know it's solved.
Is there a way that you know of?

Dana

you could ask @Administrator to close the thread but typically it isn't necessary to bug him/her. you can just unfollow the thread, remove subscriptions for updates (2 check boxes at the bottom- watch this thread and receive email notifications), or a step stronger than that is ignoring the thread.

unfollow and ignore are at the top right of each page of a thread.

 

[DanaL]

you could ask @Administrator to close the thread but typically it isn't necessary to bug him/her. you can just unfollow the thread, remove subscriptions for updates (2 check boxes at the bottom, watch this thread and receive email notifications, or a step stronger than that is ignoring the thread.

unfollow and ignore are at the top right of each page of a thread.

It was more to not bother people.
I'll just leave it.
I'm happy to hear what people have to say.
Thank you.

 

[Glen Baker LLC]

It was more to not bother people.
I'll just leave it.
I'm happy to hear what people have to say.
Thank you.

I realize your question has been answered.
If people have no interest they won't click on the thread.
If they don't want to be bothered they won't reply. But we know that's not going to happen

 

[Larrythelunatic]

Larry,
Do you know how to mark a thread as resolved or closed?
I got some amazing answers yesterday.
I completely misunderstood how the system works.
Someone told me about the Power Flow app. It tells you why the engine is running. Too much power needed, heater is on, all kinds of things. It's very cool.
It is fine. I'm thrilled with it and all the help I got here.
I'd like to let people know it's solved.
Is there a way that you know of?

Dana

I think that you just did.

 

[JimInWI]

It has been in the teens here. I fully understand the engine warm up thing. It doesn't matter how long the car has been running. If it's in gas mode when I come to a stop it never turns off. You are the first person to say yours does. It's all very confusing to me. I need to have a detailed discussion with service before I bring it in. Thank you.

Well, how much driving are doing with the truck? Have you driven it in the summer yet?

The length of the drive matters, particularly in cold temperatures. If you’re not driving it for more than about 15 minutes a day, the hybrid battery is probably not fully charging, and thus the ICE will not turn off until the battery is charged enough for the ICE to turn off when stopped. Cold temperatures also affect the battery and how well it can hold a charge, meaning that it will require more and longer charging if not driven everyday. It’s just a fact of life for those of us who own hybrids in northern climates.

Since I haven’t seen that you have driven the truck in warmer temperatures yet, you may not have simply had the opportunity to experience how the battery and ICE work in normal temperatures. (By warmer, I mean consistent temperatures above the 50s.)

Given that you use words like “never” when you also indicate that the truck has indeed stopped at a light on occasion, then what I am seeing is typical short drive winter behavior which is being elevated to an extreme. In stop and go driving where the hybrid battery never gets a chance to charge up, the ICE will eventually run when stopped to get the proper charge on the hybrid battery again. The hybrid battery doesn’t hold its charge forever. You can go all-electric for quite a while in some situations, but eventually the battery is going to require a charge and force the ICE to run.

Take your truck for a 30 minutes drive at sustained highway, or interstate speeds, (this allows for a more than adequate hybrid battery charge, and besides its fun to drive your cool truck, right?) and see if the ICE turns off when you exit, decelerate, and come to a stop. I suspect it will. If it passes this test, you’re experiencing normal winter behavior with the ICE not shutting off on short trips.

The ICE does not always automatically turn off when stopped, and the auto hold does not guarantee it will if the hybrid battery is not charged enough or the engine isn’t warm enough. As stated by another poster, the ONLY governing factors for the ICE to turn off are hybrid battery state of charge and the ICE operating temperature. Both of those factors are kind of hard to get to on short, infrequent drives in cold temperatures.

If it still isn’t turning off after a 30 minute drive at higher speeds in cold weather, then you may have a sensor or software issue that is causing the truck to not shutdown correctly when you’re slowing down (released the accelerator) or stopped. The only way to really tell without a shop visit is to take a fun 30 minute drive in it. I doubt you want to waste your time and head to the Ford dealership only to find out that you‘re experiencing typical winter behavior.

Good luck, and I hope my post helps.

 

[DanaL]

Well, how much driving are doing with the truck? Have you driven it in the summer yet?

The length of the drive matters, particularly in cold temperatures. If you’re not driving it for more than about 15 minutes a day, the hybrid battery is probably not fully charging, and thus the ICE will not turn off until the battery is charged enough for the ICE to turn off when stopped. Cold temperatures also affect the battery and how well it can hold a charge, meaning that it will require more and longer charging if not driven everyday. It’s just a fact of life for those of us who own hybrids in northern climates.

Since I haven’t seen that you have driven the truck in warmer temperatures yet, you may not have simply had the opportunity to experience how the battery and ICE work in normal temperatures. (By warmer, I mean consistent temperatures above the 50s.)

Given that you use words like “never” when you also indicate that the truck has indeed stopped at a light on occasion, then what I am seeing is typical short drive winter behavior which is being elevated to an extreme. In stop and go driving where the hybrid battery never gets a chance to charge up, the ICE will eventually run when stopped to get the proper charge on the hybrid battery again. The hybrid battery doesn’t hold its charge forever. You can go all-electric for quite a while in some situations, but eventually the battery is going to require a charge and force the ICE to run.

Take your truck for a 30 minutes drive at sustained highway, or interstate speeds, (this allows for a more than adequate hybrid battery charge, and besides its fun to drive your cool truck, right?) and see if the ICE turns off when you exit, decelerate, and come to a stop. I suspect it will. If it passes this test, you’re experiencing normal winter behavior with the ICE not shutting off on short trips.

The ICE does not always automatically turn off when stopped, and the auto hold does not guarantee it will if the hybrid battery is not charged enough or the engine isn’t warm enough. As stated by another poster, the ONLY governing factors for the ICE to turn off are hybrid battery state of charge and the ICE operating temperature. Both of those factors are kind of hard to get to on short, infrequent drives in cold temperatures.

If it still isn’t turning off after a 30 minute drive at higher speeds in cold weather, then you may have a sensor or software issue that is causing the truck to not shutdown correctly when you’re slowing down (released the accelerator) or stopped. The only way to really tell without a shop visit is to take a fun 30 minute drive in it. I doubt you want to waste your time and head to the Ford dealership only to find out that you‘re experiencing typical winter behavior.

Good luck, and I hope my post helps.

I took it for a longer drive today, I had to do a map update. I tried all the suggestions and checked out the power flow app.
The truck is working perfectly, just a little differently from what I was expecting, but now I know.
It is all good.
Thank you.

 

[Glen Baker LLC]

I took it for a longer drive today, I had to do a map update. I tried all the suggestions and checked out the power flow app.
The truck is working perfectly, just a little differently from what I was expecting, but now I know.
It is all good.
Thank you.

Now you know you can't compare your old Honda Civic to a new Ford Maverick.

 

[RideSolo]

I took it for a longer drive today, I had to do a map update. I tried all the suggestions and checked out the power flow app.
The truck is working perfectly, just a little differently from what I was expecting, but now I know.
It is all good.
Thank you.

Mazeltov!

 

[HeyBales]

I have a Hybrid Maverick, here are the reasons I see it will typically stay on.
* Once the engine starts, it will continue to run until the engine comes to temp. On cold mornings it might take 10 minutes for this to happen. Look at the temp gauge, the engine wants at least one bar (plus more). Anytime the engine temp drops too much, it will keep the engine on until it comes back to temp.
* If the High Voltage battery level drops too low, it will kick on the engine. Usually runs for about 5 minutes to recharge the battery.
* If the outside air is under 32? it will automatically start the engine when the car is started and run until engine temp is reached.

This is not true that the engine needs to be that high in temp.

Based on where you have the climate heat temp set, it'll start the ICE at a lower limit and turn off at a higher limit - and I've seen plenty of those where it never reaches the 1st bar, for XL/XLT display anyway.
You could have yours set so high it just happens to have a higher limit at 1st bar.

50 - 55 C is what I usually see (in log files from Forscan Lite), when I have the temp set at 75 F, and it's 20-40 F outside. That's not near the 1st bar for XLT display, no idea what that is on Lariat.

Of course the drop from 55 to 50 C happens a lot faster while moving if colder out, and EV mode is possible for some distances.

32 F is not a set point. What you've observed is still likely related to where you have your climate temp set at. You can start truck at 20 F at least with climate off and it won't turn ICE on immediately. In fact I wasn't willing to wait to see and turned climate control back on, so not sure how long it would have been willing to go before kicking ICE on. I think I recall once getting moving assuming I heard the ICE on but it actually wasn't - I was distracted by the super long EV Coach blue bar wondering how fast that would drop.

 

[HeyBales]

I get when the engine is cold. My Civic was the same way. But this truck NEVER autostops. As I told another responder, the gas engine runs so quietly and smoothly it didn't occur to me it was running when I went for the test drive. I wasn't keyed into the "Electric Driving" prompt. I wasn't sure how to tell when the engine was running because there is no tach. Everything I read said the truck autostops. Now everyone is telling me it's normal if it doesn't. The truck is very nice, but if the lack of autostop is normal, I will be very frustrated for years. If it gets the advertised MPG (which everyone says it does), I'll be better. I will be doing my first fill-up soon. The truck is saying 31.3. Combo city/highway, but it could be low because it's still breaking in.

Do you have your climate control heat turned up to HI above 85 because it's cold?
That'll keep your engine running because it's required except in some cases when the engine is finally at high enough operating temps the ceramic heaters aren't being used anymore.
Or if coasting with high enough regen that can supply the power to them and you are barely needing EV power to coast.

 

[HeyBales]

I'm reading all this, and absolutely love how well my dealer sales person explained everything. The start/stop and hybrid are two totally different systems. The ECO mode will charge the battery every time you take your foot off the gas, and use the brakes. The engine will shut off. It won't necessarily start when you start again because there is enough battery power to drive off. If you accelerate hard, the engine will start immediately. A lot of it depends on how you drive as well. Sounds to me like everything is working properly.

Agree. If it keeps getting called auto-start/stop confusion will just be caused with someone - if that's a tech not thinking clearly or not trained well - problems likely wasting time.

I'll add that all coasting - no matter the mode (except Tow & Sport which keeps engine running) - causes regen - Normal, Slippery, ECO.
The amount of regen you are going to get from a coast will be the same no matter the mode.
So 100% is the same amount of power put back into the battery.
Eco is more aggressive so less brake press involved.
The same level in Normal mode would allow more coast or need to press the brake within the regen band.
The same level is Slippery is going to require much more brake pedal and you better plan on longer stopping distance to still hit the 100%.

And indeed on any of those modes - if engine isn't needed for recharging the battery above 30%, or heat - it'll be off.

There was a time or two at least with AC maxed out the slight regen wasn't enough and I hit the red light line of cars right as 30% was hit - so engine came on.
Then while waiting it hit 40% so engine went off just as light went green. And I immediately needed to accelerate and engine back on.
Hated that kind of timing.

 

[JimInWI]

I took it for a longer drive today, I had to do a map update. I tried all the suggestions and checked out the power flow app.
The truck is working perfectly, just a little differently from what I was expecting, but now I know.
It is all good.
Thank you.

Great news!

 

[umpkey]

I have not read through every post, but I have had a Hybrid Maverick for over a year now and all you are mentioning is normal. 99% of the time I cannot tell by sound or feel when the truck transitions back and forth which I love. When I need power I have it there is never the feel of the engine starting like in the ecoboost as we have a different engine. I would not be concerned about it just enjoy it and enjoy the amazing gas mileage. And yes as stated there are many factors that go into play as when the electric engine or the ICE runs.

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