Ambient Temperature High Warning

[shutterbug]

I have a friend who just got the Tesla x…it wouldn’t let him use the ac this afternoon so he drove home 39 minute with no ac…..+1 for Mach e on this front so far…switching me to engage from unbridled was odd but not the end of the world.

Tesla owners don't need A/C. Owning a Tesla automatically makes them super cool ? ? ?

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[macchiaz-o]

For those that received the Drive Mode not available message.....was your default mode Unbridled?

No. I was most recently using Whisper. On the way home from work I stopped to get food. And when I left to go home, everything was back to normal (and back to Whisper).

And I'll point out that while it looked like Engage on the instrument cluster, the drive mode screen showed none of the three as selected.

Pedal mapping felt "normal" to me (I switch modes a lot? It felt like Engage though, I think) except that the acceleration was capped. In other words, the back half of the accelerator pedal was all the same amount of power. One pedal driving still seemed normal.

I mashed the pedal all the way to the floor on the freeway on ramp because I noticed it wouldn't accelerate like I'm used to. It was fine... Didn't feel dangerous, but it was definitely being limited.

 

[Murse-In-Airy]

More safety features to keep our batteries in good shape for years to come. I do find it kind of ironic that machines made to combat environmental change are so greatly effected by environmental change.
The “plug in when it in use” message also appears when it’s super cold out, because freezing your battery is just as bad as cooking it.

 

[prdude]

No. That is a separate system. Battery conditioning has higher priority than cabin conditioning. In extreme cases, the cabin cooling will be disabled. If that happens, then start looking for a safe place to pull over.

the battery/power electronics and cabin HVAC are indeed separate loops. But they do interface at the battery chiller, when the battery chiller is active, which it likely is in hot ambients. Assuming the chiller is active, if the HVAC speed drops, that would reduce load on the HVAC evaporator, leaving more capacity for heat rejection at the battery chiller. In summary, it is a good thing for battery and power electronics cooling to have the HVAC blower speed drop.

 

[DanCoon]

Another interesting tidbit... My charging speed was reduced all night and I woke up to 70% charge rather than my usual 90%. I saw there was a blue and amber light on the Ford charger. I'm still looking up what that means. Im assuming it means reduced charge speed due to the heat. Ford App said charge wouldn't be complete for another 24 hours when I woke up this morning.

 

[macchiaz-o]

Another interesting tidbit... My charging speed was reduced all night and I woke up to 70% charge rather than my usual 90%. I saw there was a blue and amber light on the Ford charger. I'm still looking up what that means. Im assuming it means reduced charge speed due to the heat. Ford App said charge wouldn't be complete for another 24 hours when I woke up this morning.

Yes that's what it means. Charging slowed due to overheating in the EVSE. I was having the same thing happen so I switched over to the Connected Charge Station.

 

[SnBGC]

No. I was most recently using Whisper. On the way home from work I stopped to get food. And when I left to go home, everything was back to normal (and back to Whisper).

And I'll point out that while it looked like Engage on the instrument cluster, the drive mode screen showed none of the three as selected.

Pedal mapping felt "normal" to me (I switch modes a lot? It felt like Engage though, I think) except that the acceleration was capped. In other words, the back half of the accelerator pedal was all the same amount of power. One pedal driving still seemed normal.

I mashed the pedal all the way to the floor on the freeway on ramp because I noticed it wouldn't accelerate like I'm used to. It was fine... Didn't feel dangerous, but it was definitely being limited.

Thanks for the info. Do you happen to remember if you saw the Brake Coach during that time?
It might be that all 3 drive modes are unavailable and replaced with a power limited mode. That would make sense actually. I would expect 1PD to be disabled as well since using 1PD really isn't that helpful with battery temp so if the engineers chose to limit power they might as well limit the regen too? Or perhaps they did and the friction brakes were more active than normal. If that happened, and you didn't notice any difference then that is quite impressive software calibrations from the Ford drive team.

Yesterday I was using Whisper + L and I was in meetings most of the day so I only put about 50 miles on the car. It sat in our parking lot most of the time but the second half of the day it was plugged in (not charging) so perhaps that made a difference and explains why I didn't get that same message?

 

[Phxboiler]

I used to have a bolt and charging in the heat is reduced as it also would pause to cool batteries and then resume. I haven’t noticed yet in the Mach e but assume will be the same. Our garages in az get crazy hot in summer.

I still wish there was a way to connect to charger and have a setting that allows it to use energy to cool the battery but not charge until the right time (ie for time of use plans).

 

[SnBGC]

I used to have a bolt and charging in the heat is reduced as it also would pause to cool batteries and then resume. I haven’t noticed yet in the Mach e but assume will be the same. Our garages in az get crazy hot in summer.

I still wish there was a way to connect to charger and have a setting that allows it to use energy to cool the battery but not charge until the right time (ie for time of use plans).

That is what I do at work. I plug in so the vehicle will have shore power to cool the battery if needed yet not charge the vehicle. I do this a couple of ways. I set a charge schedule during off hours.....something like 7 pm to 7 am. That usually will avoid a charge session while plugged in at work. Caution though because the target charge setting overrides the schedule so I also reduce my charge setting to 50% while at work. That ensures my vehicle will never charge at work unless I force charge it.

So you don't have to hunt down my previous thread that explains how the charge settings can change unexpectedly......

The charge settings are prioritized.

1. Departure time
2. Charge percentage target
3. Charge Schedule

So, when you park and plug in......the car looks for an upcoming departure time and determines how much time is required to reach the charge percentage target. If there is a charge schedule start time coming up before your departure time then the car checks if there is enough time in that schedule to reach the target charge percentage. The window of available time is the scheduled start time and the schedule end time or the departure time (if set)....whichever is sooner. If so, then the car will wait for the schedule to begin charging.

If not, then the vehicle will begin charging immediately until it has reached the point where it can finish the job inside the scheduled time. So, it might charge for a short period of time and then pause and resume during your scheduled time.


About calculating time to reach the charge percentage......
The vehicle uses the most recent charge speed to make that time calculation. If you charged L1 or perhaps L2 32A in a previous session then it will use that rate of charge to determine if it can reach your set charge percentage in the time frames outlined above. It does this when you shut down the vehicle. Then when you plug in, it checks to see if the EVSE that you just connected is able to deliver the charge speed from the prior charge event. If the EVSE is the same.....then the calculated time is not affected. If the EVSE is a faster or slower then the car recalculates the time required.

So, it's possible that you may get the "Vehicle will charge outside the schedule" message when you turn the car off but then plug into a faster EVSE and it won't start charging right away (because now it CAN perform the charge event inside the scheduled time). It can also go the other way. You might not get the message because the car is expecting you to plug into a faster EVSE (48A for example), but then you might plug into an EVSE that is providing something less so the vehicle may start charging right away.

Why does this matter? Well, many public L2 EVSE stations share power so you may plug in at the grocery store, gym or movie theater etc and you MIGHT not get the full power that EVSE is capable of. It might be 48A, 40A, 32A, 24A, 16A etc. And it might vary for each time you visit that unit. So, if you plug in away from home then you might get the "Vehicle will charge outside the schedule" message when it might not actually do that. Once you plug in at home, that calculation is performed using the data provided by your home EVSE and the car might decide to wait for the schedule to charge.

Sorry for the long winded reply but I hope this info helps.

 

[macchiaz-o]

Thanks for the info. Do you happen to remember if you saw the Brake Coach during that time?
It might be that all 3 drive modes are unavailable and replaced with a power limited mode. That would make sense actually. I would expect 1PD to be disabled as well since using 1PD really isn't that helpful with battery temp so if the engineers chose to limit power they might as well limit the regen too? Or perhaps they did and the friction brakes were more active than normal. If that happened, and you didn't notice any difference then that is quite impressive software calibrations from the Ford drive team.

Yesterday I was using Whisper + L and I was in meetings most of the day so I only put about 50 miles on the car. It sat in our parking lot most of the time but the second half of the day it was plugged in (not charging) so perhaps that made a difference and explains why I didn't get that same message?

I didn't notice brake coach. 1PD felt normal to me, perhaps a bit lighter than Engage like in Whisper mode.

 

[BMT1071]

I didn't notice brake coach. 1PD felt normal to me, perhaps a bit lighter than Engage like in Whisper mode.

You don't plug in at work, right? It seems like that could explain the different experience that @SnBGC had. His car was able to precondition prior to departure, where yours was not. Then on your drive to pick up dinner the battery got some cooling time so the rest of your drive home was normal. That's my best guess anyway.

 

[BMT1071]

That is what I do at work. I plug in so the vehicle will have shore power to cool the battery if needed yet not charge the vehicle. I do this a couple of ways. I set a charge schedule during off hours.....something like 7 pm to 7 am. That usually will avoid a charge session while plugged in at work. Caution though because the target charge setting overrides the schedule so I also reduce my charge setting to 50% while at work. That ensures my vehicle will never charge at work unless I force charge it.

So you don't have to hunt down my previous thread that explains how the charge settings can change unexpectedly......

The charge settings are prioritized.

1. Departure time
2. Charge percentage target
3. Charge Schedule

So, when you park and plug in......the car looks for an upcoming departure time and determines how much time is required to reach the charge percentage target. If there is a charge schedule start time coming up before your departure time then the car checks if there is enough time in that schedule to reach the target charge percentage. The window of available time is the scheduled start time and the schedule end time or the departure time (if set)....whichever is sooner. If so, then the car will wait for the schedule to begin charging.

If not, then the vehicle will begin charging immediately until it has reached the point where it can finish the job inside the scheduled time. So, it might charge for a short period of time and then pause and resume during your scheduled time.


About calculating time to reach the charge percentage......
The vehicle uses the most recent charge speed to make that time calculation. If you charged L1 or perhaps L2 32A in a previous session then it will use that rate of charge to determine if it can reach your set charge percentage in the time frames outlined above. It does this when you shut down the vehicle. Then when you plug in, it checks to see if the EVSE that you just connected is able to deliver the charge speed from the prior charge event. If the EVSE is the same.....then the calculated time is not affected. If the EVSE is a faster or slower then the car recalculates the time required.

So, it's possible that you may get the "Vehicle will charge outside the schedule" message when you turn the car off but then plug into a faster EVSE and it won't start charging right away (because now it CAN perform the charge event inside the scheduled time). It can also go the other way. You might not get the message because the car is expecting you to plug into a faster EVSE (48A for example), but then you might plug into an EVSE that is providing something less so the vehicle may start charging right away.

Why does this matter? Well, many public L2 EVSE stations share power so you may plug in at the grocery store, gym or movie theater etc and you MIGHT not get the full power that EVSE is capable of. It might be 48A, 40A, 32A, 24A, 16A etc. And it might vary for each time you visit that unit. So, if you plug in away from home then you might get the "Vehicle will charge outside the schedule" message when it might not actually do that. Once you plug in at home, that calculation is performed using the data provided by your home EVSE and the car might decide to wait for the schedule to charge.

Sorry for the long winded reply but I hope this info helps.

Just out of curiosity, why don't you charge at work?

 

[macchiaz-o]

You don't plug in at work, right? It seems like that could explain the different experience that @SnBGC had. His car was able to precondition prior to departure, where yours was not. Then on your drive to pick up dinner the battery got some cooling time so the rest of your drive home was normal. That's my best guess anyway.

Right. No way to charge at work, or to have shaded parking. It's a big open lot.

 

[BMT1071]

Right. No way to charge at work, or to have shaded parking. It's a big open lot.

Tell your company to get their ? together. ?? That's unconscionable here in the desert. Shade structure with PV panels to power the charger. ?

 

[macchiaz-o]

Tell your company to get their ? together. ?? That's unconscionable here in the desert. Shade structure with PV panels to power the charger. ?

Yeah, well... Nothing is going to change there..haha

Got the No Drive Modes thing on my way to lunch today. It's gonna be common with these temps I guess.

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