Turtle Mode (Cold Weather Warning)

GarageWarrior2023

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Question for @Mach-Lee or anyone else who may have specifics...

Does the Mach-E ever warm the battery outside of a scheduled departure time (while plugged in) or while navigating to a DCFC?

If it does, what are the parameters (battery temp, etc) that this happens?
it warms the battery while driving, when plugged in it will periodically heat to keep above freezing.

it will not heat the pack if you are unplugged and vehicle is turned off. Ford engineering has confirmed this for me as well.
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the golden eel

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it warms the battery while driving, when plugged in it will periodically heat to keep above freezing.

it will not heat the pack if you are unplugged and vehicle is turned off. Ford engineering has confirmed this for me as well.
Thanks. I assumed what you wrote to be the case. And if so, at what temperature does the car decide the battery needs to be heated?

During this recent cold snap the thermometer in my garage shows around 22 degrees F. My EVSE app does not ever show the car drawing any power outside of when I plug in getting home from work, and when I am preconditioning in the morning. And I don't have any charging time restrictions on the charger or the car.

So if it does decide to heat the battery, what is the temperature (battery or ambient) that triggers this automatic warming? It must be colder than 22F based on my observations.
 

GarageWarrior2023

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Thanks. I assumed what you wrote to be the case. And if so, at what temperature does the car decide the battery needs to be heated?

During this recent cold snap the thermometer in my garage shows around 22 degrees F. My EVSE app does not ever show the car drawing any power outside of when I plug in getting home from work, and when I am preconditioning in the morning. And I don't have any charging time restrictions on the charger or the car.

So if it does decide to heat the battery, what is the temperature (battery or ambient) that triggers this automatic warming? It must be colder than 22F based on my observations.
The battery will hold a lot of residual heat and the battery heating is based on pack temp not ambient. at 22F and in a garage, after driving, then plugging in and charging it may simply be holding enough heat until your next run cycle. I'm not sure of the exact numbers at which the pack wants to heat but my general understanding is that an EV will keep the pack above freezing (above 32F) and will heat when it either reaches or goes below this.

For anyone without a smart EVSE. In the Ford pass app you will know if it's heating the pack while plugged in, in the app it lists as "preparing for drive" every time it heats the pack while plugged in. its the same label it uses when in a preconditioning cycle. I have caught myself going "what the hell...I didn't set a precondition for this time" only to realize it's a dual purpose label.

I think Mach-Lee will have specifics for the exact temperature setpoints the pack heats at and to. My data is slightly more general at this point.
 

Guss-E 2021

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Nothing colder than 20 F for a daytime low the next few days in NH. Fortunately. All of this makes me think back to conversations within the forum about the kind of information we wish were available on our screens.

I'm thinking battery temperature might be nice :)
 
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Mach-Lee

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Thanks. I assumed what you wrote to be the case. And if so, at what temperature does the car decide the battery needs to be heated?

During this recent cold snap the thermometer in my garage shows around 22 degrees F. My EVSE app does not ever show the car drawing any power outside of when I plug in getting home from work, and when I am preconditioning in the morning. And I don't have any charging time restrictions on the charger or the car.

So if it does decide to heat the battery, what is the temperature (battery or ambient) that triggers this automatic warming? It must be colder than 22F based on my observations.
It *should* keep the pack close to or above freezing, provided you have open charging hours and the software is working. At 22F it might take a day or two before the pack cools down enough to trigger it. It’s based on battery temp, not air temp.

Should heat to 2-5°C when it triggers. I don’t usually see heating until the garage is less than 20°F and the car has been parked for a day or two.
 


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Other than the Tesla Graveyard in CHI, has there been other reports of other EV brands suffering in a similar way?

I've have not seen anything yet, so maybe we just lucked out with great engineering.

I'm starting to get the feeling that "tested" in extreme cold is the not the same as "survived in extreme cold".
 

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The news just keeps getting worse for us COLD winter drivers. Does anyone know if other electric vehicles are experiencing this issue?
I would like to know the same, today we were around 10F and I had forgot to plug in so got down to 13% SOC and I wanted to see if I got the red turtle again but did not. Looks like the worst of our cold might be behind us this winter, next week talking 30F so maybe the worst of these issues is over for this winter, can only hope.
 

MME Farmer

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I experienced this over the weekend in -27C (-17F).

Usually we plan carefully and precondition and even charge to 100% for long trips rather than just 90%......but a family emergency made us take off with limited preheat and only 85% charge on a long highway commute. within 45km of a 50kw DC charger we dropped below 30% and got the amber turtle...followed by the red turtle at 25% at which point the car took over and for every 30 seconds of driving it seemed to drop by 1km/h in speed until I was doing 50km/h and on a highway.....made it to the charger with 7%SOC and charged to 70% and then booted home no problem at 100km/h...

I wasn't expecting the performance and speed reduction at that SOC. I could see acceleration being cut...the speed being cut was an unsettling surprise. (though I understand the methodology behind the forced restrictions)

From what others have posted....is this new behavior to aggressively control speed and acceleration at 30%SOC (rather than lower than that) in the cold or has it always been this way? I was surprised because I had seen so many people brag about getting down to 10% or less and never mentioning their speed getting so badly clipped. But they might be in nice warm climates too...

Curious what others can speak to for common cold weather operation (this is my first winter with mine).

Burning question for me: has anyone been highway driving with a high SOC like above 50-60% in extreme cold (-37c to -45c) and had the heater not keep up and end up with their speed clipped due to cold battery? I have heard these heaters have trouble keeping up when you combine highway speeds and extreme cold.
Oh yes, I do know if it gets below -20F and at night I don't care what settings or what warming you do you are going to have a cold ride especially if you throw in a good wind. These heaters are way under sized. Surely there must be some type of auxiliary heater that Ford should make available to compensate for their blunder.
I experienced this over the weekend in -27C (-17F).

Usually we plan carefully and precondition and even charge to 100% for long trips rather than just 90%......but a family emergency made us take off with limited preheat and only 85% charge on a long highway commute. within 45km of a 50kw DC charger we dropped below 30% and got the amber turtle...followed by the red turtle at 25% at which point the car took over and for every 30 seconds of driving it seemed to drop by 1km/h in speed until I was doing 50km/h and on a highway.....made it to the charger with 7%SOC and charged to 70% and then booted home no problem at 100km/h...

I wasn't expecting the performance and speed reduction at that SOC. I could see acceleration being cut...the speed being cut was an unsettling surprise. (though I understand the methodology behind the forced restrictions)

From what others have posted....is this new behavior to aggressively control speed and acceleration at 30%SOC (rather than lower than that) in the cold or has it always been this way? I was surprised because I had seen so many people brag about getting down to 10% or less and never mentioning their speed getting so badly clipped. But they might be in nice warm climates too...

Curious what others can speak to for common cold weather operation (this is my first winter with mine).

Burning question for me: has anyone been highway driving with a high SOC like above 50-60% in extreme cold (-37c to -45c) and had the heater not keep up and end up with their speed clipped due to cold battery? I have heard these heaters have trouble keeping up when you combine highway speeds and extreme cold.
Thankfully I don't see the temps you do but I can tell you at -20F, at night with a good wind, I don't care what warming or settings you use, you are going to have a cold ride. These heaters are way undersized. Surely there must be an auxiliary heater that Ford should provide to make up for their blunder. Suppose the good news is at that temp you don't have to worry much about speeding tickets.
 

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I experienced this over the weekend in -27C (-17F).

Usually we plan carefully and precondition and even charge to 100% for long trips rather than just 90%......but a family emergency made us take off with limited preheat and only 85% charge on a long highway commute. within 45km of a 50kw DC charger we dropped below 30% and got the amber turtle...followed by the red turtle at 25% at which point the car took over and for every 30 seconds of driving it seemed to drop by 1km/h in speed until I was doing 50km/h and on a highway.....made it to the charger with 7%SOC and charged to 70% and then booted home no problem at 100km/h...

I wasn't expecting the performance and speed reduction at that SOC. I could see acceleration being cut...the speed being cut was an unsettling surprise. (though I understand the methodology behind the forced restrictions)

From what others have posted....is this new behavior to aggressively control speed and acceleration at 30%SOC (rather than lower than that) in the cold or has it always been this way? I was surprised because I had seen so many people brag about getting down to 10% or less and never mentioning their speed getting so badly clipped. But they might be in nice warm climates too...

Curious what others can speak to for common cold weather operation (this is my first winter with mine).

Burning question for me: has anyone been highway driving with a high SOC like above 50-60% in extreme cold (-37c to -45c) and had the heater not keep up and end up with their speed clipped due to cold battery? I have heard these heaters have trouble keeping up when you combine highway speeds and extreme cold.
Oh yes, I do know if it gets below -20F and at night I don't care what settings or what warming you do you are going to have a cold ride especially if you throw in a good wind. These heaters are way under sized. Surely there must be some type of auxiliary heater that Ford should make available to compensate for their blunder.
 

GarageWarrior2023

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Nothing colder than 20 F for a daytime low the next few days in NH. Fortunately. All of this makes me think back to conversations within the forum about the kind of information we wish were available on our screens.

I'm thinking battery temperature might be nice :)
I agree, battery temp would be pretty darn cool. I'm also missing having instant read out of kw usage in and out in real time on the gauge cluster while driving (brake coach is not very helpful). I had this on my last EV and it changes your driving habits aggressively. I was able to get my efficiency dialed in perfectly having that read out. In the Mach-E I have similar driving habits.....but without the instant data I can tell me habits are shifting...
 

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I agree, battery temp would be pretty darn cool. I'm also missing having instant read out of kw usage in and out in real time on the gauge cluster while driving (brake coach is not very helpful). I had this on my last EV and it changes your driving habits aggressively. I was able to get my efficiency dialed in perfectly having that read out. In the Mach-E I have similar driving habits.....but without the instant data I can tell me habits are shifting...
Its not hard or expensive to create a 'custom' dashboard for whatever sensor data you want and display it on your phone: https://www.macheforum.com/site/thr...r-output-regen-charging-and-other-data.33211/
 

GarageWarrior2023

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Its not hard or expensive to create a 'custom' dashboard for whatever sensor data you want and display it on your phone: https://www.macheforum.com/site/thr...r-output-regen-charging-and-other-data.33211/
Oh totally! I have pondered this a few times. I have a spare phone kicking around too that I thought of dedicating to this so I could always have custom data points handy without tying up my day to day phone. Obviously it would be nicer if Ford would give us easy access to this info directly in the vehicle though.
 

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Scary, never had this happen in the past 3 winters, and I used to drive a lot, often getting home around 5%.

I know we aren't generally that cold in Michigan, but I'd be driving through areas that get into the -10 to -25F range.

Maybe someone had a decimal error in some updated code.
 

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Its not hard or expensive to create a 'custom' dashboard for whatever sensor data you want and display it on your phone: https://www.macheforum.com/site/thr...r-output-regen-charging-and-other-data.33211/
I find plugging in the OBD all the time a bit of a pita and not something I like to do to see if things like if my 12V soc is ok. Should be on the app/screen. And I also would go for the consumption numbers on the IPC as that would be a plus. I gauge my trips on consumption and percentage used as the GOM is just a guess based on those two.
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