Shayne

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Maybe my wording was bad, but in this case you would use the conventional brakes, which means it turns to heat. The brake disks are huge heat sinks.

I would switch half way down such a steep descent until patched. Plenty of old cars have brake-failures in that particular hill due to stress on the discs.
This is what the car is smart enough to do but appears not to be doing under one extreme circumstance which should help all of us in the long run. It does transition between regenerative and friction brakes all by itself. Possibly the software change will be to add a variable of when it switches to friction (temperature limit or something?). Something caused them to crash (computer speaking) not sure if it was temp. It stranded 6 of them but did not hurt anybody/thing from what I understand.

Even in any ICE car with only friction brakes I would still want really really good brakes going down that mountain where it happened. I can see the braking system getting pretty warm going down that. I would also bet there are a few old local stories about that descent. Wonder how they do on rotors around there (replacing warped ones that is). You can make the rotors glow red under the right circumstances. Huge heat sink is a relative term.

Nothing is permanently broken.
Are you referring the the MME's in Norway or in general? If in general I am providing my case of permanently broke. ;)
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dbsb3233

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This is what the car is smart enough to do but appears not to be doing under one extreme circumstance which should help all of us in the long run. It does transition between regenerative and friction brakes all by itself. Possibly the software change will be to add a variable of when it switches to friction (temperature limit or something?). Something caused them to crash (computer speaking) not sure if it was temp. It stranded 6 of them but did not hurt anybody/thing from what I understand.
My guess is it's something more like the battery cooling failing to come on (or come on quickly enough) when max regen is being generated frequently like that (a steep road with lots of tight curves and frequent hard slowdowns).
 

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Ouch. Good thing mine will not see a production date anytime in the next 90 days. /me cries on the inside
 

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blue92lx

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For you guys from US, this is noe of The roads causing problems with overheating while doing regen charging.
Trollstigen:
Ford Mustang Mach-E [UPDATED with Ford Norway's Response] Reports of Steep Downhills / Descents Overheating Mach-E 1626358198854
With roads like that I'd deplete my entire battery and be totally stranded before I ever got to another charger lol.
 
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Ouch. Good thing mine will not see a production date anytime in the next 90 days. /me cries on the inside
This is what I keep telling myself too, even though mine has supposedly been built. I won't have to worry about anything except how it does in the snow at this rate.

Now I gotta go find the grumpy thread.
 

snikt

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For you guys from US, this is noe of The roads causing problems with overheating while doing regen charging.
Trollstigen:
Ford Mustang Mach-E [UPDATED with Ford Norway's Response] Reports of Steep Downhills / Descents Overheating Mach-E 1626358198854
Drove the Trollstigen, pretty fun road. I think the road down into Geiranger felt even steeper though.

In Colorado we don't have roads quite that steep but ones that descend much more elevation, just over a longer time
 

All Hat No Cattle

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Ford Mustang Mach-E [UPDATED with Ford Norway's Response] Reports of Steep Downhills / Descents Overheating Mach-E 1626372832284


Yikes, that looks like a tough road. In a perfect world Ford would have tested the Mach E on this road, as a test of endurance. But they didn't, so they have to do a software change to fix the problem.

But other manufacturers of BEV's have problems also, even after being in production for years. Case in point, today. Seems that Chevy Bolts are bursting into flames, AFTER going thru a recall to fix the underlying problem.

GM Tells Chevy Bolt Owners to Park It Outside After Two Electric-Car Fires
Last November, General Motors recalled nearly 69,000 Bolts from the 2017-19 model years, including roughly 51,000 sold in the U.S.


General Motors Co. is advising owners of its previously recalled Chevrolet Bolt electric vehicles to once again park outdoors after two cars that had been repaired caught fire.


The auto maker said on its website that it is also advising the owners “out of an abundance of caution” not to leave their vehicles charging overnight.


The company didn’t release details about what caused the fires in the two cars but said it was investigating the incidents. GM said customers should continue to get the fix under the recall. In response to a request for comment, a GM spokesman emailed a statement similar to the announcement on the website.

The National Highway Traffic Safety Administration said the vehicles’ cell packs have the potential to smoke and ignite internally. The agency opened an investigation into the Bolt in October.

GM recalled in November nearly 69,000 Bolts from the 2017-19 model years, including roughly 51,000 sold in the U.S. GM said then that it was aware the plug-in models had a fire risk related to the lithium-ion batteries. Under the recall, the company said at that time that dealerships would limit the batteries’ charging capacity to 90% until a permanent fix was found.

The company said it has developed diagnostic software tools that will look for potential battery irregularities and will be able to detect potential issues related to changes in battery performance before any issues occur. GM said it would replace battery module assemblies if necessary. When affected cars receive the new software the 90% limit is removed.
S**t happens, and that is just the way it is.
 

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That's really terrifying! Just curious what the best driving mode is coming down a steep mountain?
Don't put it in "low mode" (center button on console) if your battery is fully charged...leave your battery with some unused capacity (say, 80%), so the regen doesn't overcharge the battery during the downhill descent. If all else fails, go into "whisper" mode, to reduce regen. I live in a very mountainous area (Lake Tahoe), so I'm NOT going to top my battery up...I'll just charge to 80%.
 

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Don't put it in "low mode" (center button on console) if your battery is fully charged...leave your battery with some unused capacity (say, 80%), so the regen doesn't overcharge the battery during the downhill descent. If all else fails, go into "whisper" mode, to reduce regen. I live in a very mountainous area (Lake Tahoe), so I'm NOT going to top my battery up...I'll just charge to 80%.
As mentioned in this thread, regen will occur when pushing the brakes in any mode.
One of the drivers says he used neither
L nor 1pedal.

Neutral will guarantee traditional braking, so use that for some of the descent in this particular hill. Most likely not an issue elsewhere.
 

dbsb3233

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Drove the Trollstigen, pretty fun road. I think the road down into Geiranger felt even steeper though.

In Colorado we don't have roads quite that steep but ones that descend much more elevation, just over a longer time
Usually. Although there are a few exceptions. Mt Evans Road is probably fairly comparable. And there has been one report of (apparently) the same problem occurring in a Mach-E during that descent.

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