2024 Hybrid - Auto Start/Stop not working

[DanaL]

I'm not sure if this will stop the replies, but you have all been great.
I feel confident that all is fine and I thank you all for everything.
This is an amazing forum.

I had a 2010 Honda Civic Hybrid. The engine turned off when I stopped at a light and started when I took my foot off the brake. It had no electric drive capability.
I've had my Maverick for 2 weeks. If I am in gas mode when I come to a light, the engine never turns off.
When I am in electric mode when I stop, the engine stays off, but started a couple of times while I was just sitting there.
It switches to electric mode at points when I'm driving, so it is capable. It just doesn't turn off at lights.
I understand it not doing it when it's cold, but it doesn't do it when it's warm either.
I have a service appointment for it in a couple of weeks, but I have not been inspired in talking to the mechanic. He said bring it in and we'll see if anything is wrong.
I'm hoping someone either has a solution, or possibly give me some thoughts on things I can tell the mechanic so he gets it.

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[Milwrdfan]

The Maverick's gas engine will run to either provide needed power for driving, or could run as needed to be charging up the high voltage battery, as the battery can take charge either from regenerative braking, or via the gas motor through a generator. Although I don't have a hybrid yet, I'm guessing the behavior you're seeing is normal and could be different than other hybrid vehicles that can only recharge the high voltage battery via regenerative braking.

 

[DanaL]

The Maverick's gas engine will run to either provide needed power for driving, or could run as needed to be charging up the high voltage battery, as the battery can take charge either from regenerative braking, or via the gas motor through a generator. Although I don't have a hybrid yet, I'm guessing the behavior you're seeing is normal and could be different than other hybrid vehicles that can only recharge the high voltage battery via regenerative braking.

In all the forum entries I have looked at, people are trying to disable start/stop. The answer is always that it can be done with the Ecoboost engine, but start/stop is how hybrids work. Mine never autostops. I cannot believe it is normal.

 

[Clarkdonbran]

Sometimes my ICE kicks on at stops if it needs to. I don’t think the hybrid operates as truly start/stop.

 

[DanaL]

Sometimes my ICE kicks on at stops if it needs to. I don’t think the hybrid operates as truly start/stop.

Thanks. That is scary and annoying. I hope it isn't the case. The truck is very nice, but I wouldn't have bought it if that's how it works. I didn't pay attention when I test drove it. The gas engine is so smooth and quiet I just assumed it was off and, as I said, I wasn't paying attention. Never assume....

 

[Diceless]

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.

 

[ShadowChas]

In all the forum entries I have looked at, people are trying to disable start/stop. The answer is always that it can be done with the Ecoboost engine, but start/stop is how hybrids work. Mine never autostops. I cannot believe it is normal.

Those auto start-start are things for the ecoboost forum folks & I don’t believe your hybrid is malfunctioning as there are many contributing factors to why your ice/engine runs.

 

[DanaL]

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.

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.

 

[paneubert]

Mine never autostops. I cannot believe it is normal.

Yes it does, and you even said it does. You said " When I am in electric mode when I stop, the engine stays off, but started a couple of times while I was just sitting there. "

That is literally how the Auto Start/Stop works. It examines the power needs of the truck and turns the gas engine on and off as needed. Just because you come to a stop with the gas engine running and it does not turn off (or it was off when you stopped but it turns on while you are stopped) DOES NOT mean the Auto Start/Stop is malfunctioning. As other have said, it means you came to a stop with the gas engine running, your truck examined its power needs, and it determined it still needed the gas engine running to either heat, cool, or charge your battery. Simple as that.

In your example where it turned on and off a few times, it had determined it did not need the gas engine support, then it determined it did, then it determined it didn't again. The fact that you observed it turning on and off while you sat at a red light is confirmation it is working properly.

 

[PGAJayhawk]

What is the temp in your area? Are you running the heater when this happens? Are you using the brake coach to help recover the maximum amount of energy when braking? All of these can contribute to your ICE running while stopped. In my area the temp is in the teens, but once the truck is warmed up it will kick off the ICE at a stoplight. It may still kick back on to charge the battery depending on how long the stoplight is and if I’m running the heater to keep the cab warm.

 

[DanaL]

What is the temp in your area? Are you running the heater when this happens? Are you using the brake coach to help recover the maximum amount of energy when braking? All of these can contribute to your ICE running while stopped. In my area the temp is in the teens, but once the truck is warmed up it will kick off the ICE at a stoplight. It may still kick back on to charge the battery depending on how long the stoplight is and if I’m running the heater to keep the cab warm.

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.

 

[MakinDoForNow]

I had a 2010 Honda Civic Hybrid. The engine turned off when I stopped at a light and started when I took my foot off the brake. It had no electric drive capability.
I've had my Maverick for 2 weeks. If I am in gas mode when I come to a light, the engine never turns off.
When I am in electric mode when I stop, the engine stays off, but started a couple of times while I was just sitting there.
It switches to electric mode at points when I'm driving, so it is capable. It just doesn't turn off at lights.
I understand it not doing it when it's cold, but it doesn't do it when it's warm either.
I have a service appointment for it in a couple of weeks, but I have not been inspired in talking to the mechanic. He said bring it in and we'll see if anything is wrong.
I'm hoping someone either has a solution, or possibly give me some thoughts on things I can tell the mechanic so he gets it.

To have ice stop when truck is brought to a stop you must have the auto hold button activated. The "high five" hand symbol button on the far right of the dial model selector. It should be lit up when active. Ice will not turn off until HVB is 40% SOC. Depending on how much draw is on the DCDC converter ice may stay on if generator is needed to assist. I believe the auto hold will stay in same on/off status when truck is cycled off/on. It also appears to me that ice may cycle on after 45-60 seconds but just guessing. This is in hybrid...

 

[DanaL]

To have ice stop when truck is brought to a stop you must have the auto hold button activated. The "high five" hand symbol button on the far right of the dial model selector. It should be lit up when active. Ice will not turn off until HVB is 40% SOC. Depending on how much draw is on the DCDC converter ice may stay on if generator is needed to assist. I believe the auto hold will stay in same on/off status when truck is cycled off/on. It also appears to me that ice may cycle on after 45-60 seconds but just guessing. This is in hybrid...

That is VERY interesting. I don't know the auto hold status, but I will check it out. You are the first person to give me hope... Thank you SO much!

 

[icegradner]

To have ice stop when truck is brought to a stop you must have the auto hold button activated. The "high five" hand symbol button on the far right of the dial model selector.

This is simply false information, auto hold is not required for the ICE to shut down while stopped at traffic lights, or in traffic.

The basic requirement for the ICE to turn off are:
1. Engine coolant must be up to operating temperature
2. HV and 12v Battery must have sufficient charge level

 

[RideSolo]

Thanks. That is scary and annoying. I hope it isn't the case. The truck is very nice, but I wouldn't have bought it if that's how it works. I didn't pay attention when I test drove it. The gas engine is so smooth and quiet I just assumed it was off and, as I said, I wasn't paying attention. Never assume....

Honestly, I'm not trying to be critical, but... "scary and annoying"??? What is scary about that? And "I wouldn't have bought it if that's how it works."??? It seems to me that everything we buy from a vehicle to a lamp has it's particular traits and we just get used to them... well, yeah, if something it onerously bad then maybe return it and get something else. Are these traits onerously bad?

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