PSA: Recall for HV Battery

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In single digits I'm able to get about 90 to 95 mi without worry. I honestly don't think I've seen any difference in power given to me than I did before. We get a lot of single digits and that's when I would start seeing reduced power. Even in the teens we would see it a lot. We're in those temps quite a lot during the winter. When it's closer to teens The power does come back faster, but when it's single digits or lower it takes a while. I've been watching it since I saw that one post on Reddit and really cannot think of any real visible change. Of course this reminds me I wanted to charge my car before I went out this afternoon so I better do that now.
 
I am at 32 miles with 61% state of charge - low of -14F this morning to highs usually between 10 and 20. 78 miles with 100% when I started this morning. Big impact using the heater to make things tolerable and also the effects of the snow - traction etc. I always preheat while still plugged No change in power delivery
 
teslarati97 said:
It was -31F this morning and I was with 1 bar of e-power. Had I plugged in and set a departure time, it would have been a different story. Last year for science, I cold soaked the SE below -40F (probably -49F but temp sensor doesn't go lower). It was barely drivable with rock hard seats and no power steering.
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God bless you - 31 F and I thought -14 was bad
 
LittleWoods said:
Welp, updates done, bimmercode settings lost, but gave me an excuse to order an enet cable to do it faster this time. :)
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I likely won't ever again use my Bluetooth dongle for coding work. The difference is stark. The wireless dongle will be reserved for when I want to do on the go readings with eFlow or mi3 or ABRP.
 
Stillk said:
I am at 32 miles with 61% state of charge - low of -14F this morning to highs usually between 10 and 20. 78 miles with 100% when I started this morning. Big impact using the heater to make things tolerable and also the effects of the snow - traction etc. I always preheat while still plugged No change in power delivery
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I'm just about to embark on my semiregular, 110 mile round-trip secondary roads drive across the border, and it appears there is a light dusting of fresh snow on most of the non-freeway roads. Along with the fact that it's around 15°F right now, I have no delusions of being able to make it without stopping for at least a 10 kWh boost on the return trip.
 
FWIW, my drop from November conditions to current conditions is also somewhere in the neighbourhood of 35 to 40%.
 
Should range drop be measured from summer to winter, or "official range" to winter? My 2021 SE is rated at 110 mile range, and I get about 90 in cold winter conditions. But I also get around 150 in summer. Am I seeing an 20% range drop in winter and a 36% increase in summer, or a 67% range drop from ideal (summer)?
 
For me, in the summertime I tend to drive more like a bat out of hell so to speak, so my range is never significantly above what it's rated to be. Also, it depends on who is in the car with me and who needs more AC going. In the winter, I drive more cautiously and that might be why my range is decent in the winter because I'm not driving so hard. So overall I lose less than 20%.
 
Puppethead said:
Am I seeing an 20% range drop in winter and a 36% increase in summer, or a 67% range drop from ideal (summer)?
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(I fear I may have gotten the math wrong, but my question still stands.)

I would also like to point out my drop to 90 mile range is when temperatures are below zero Fahrenheit and my battery gets cold-soaked. Above that I get decent winter range, still over 3 mi/kWh.
 
I just looked today. We were off 2 days this week due to well below zero temps. I'm at 3.3 m/kwh since the last reset end of December. Not too shabby given the many single digit days and below we've had. I have on my snow tires too.
 
Anecdotally, I started today's drive while it was -9.5°C and snowing lightly, and did the outbound leg (86.5 km/54 miles) using 49%, and when I stopped to DC near the halfway point (41 km) of the return leg, I was at 29%. I might've eked out the last 45 km on that, but the vagaries of traffic and weather made stopping the prudent decision. Stopped the charge at 37% (2.5 kWh for 92¢ Canadian!), drove the remaining stretch at fairly above-normal speeds, and pulled into my garage at 9%.
 
SameGuy said:
Anecdotally, I started today's drive while it was -9.5°C and snowing lightly, and did the outbound leg (86.5 km/54 miles) using 49%, and when I stopped to DC near the halfway point (41 km) of the return leg, I was at 29%. I might've eked out the last 45 km on that, but the vagaries of traffic and weather made stopping the prudent decision. Stopped the charge at 37% (2.5 kWh for 92¢ Canadian!), drove the remaining stretch at fairly above-normal speeds, and pulled into my garage at 9%.
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So upper 3s for mi/kWh, or a bit over 100 miles total range?

I haven't driven my SE in cold weather, so potentially useful to know the experience of others should I ever need to.
 
Today I went on a trip that was 54 mi total round trip. It was 8° F when I left and it was probably 15° F when I went to return home. I came home with 52% of my battery left. My very pessimistic guessometer thinks I only have 46 miles left, but if you math it out, I should have more than that even. When I was looking here and there at the current mi/kWh, I was in the upper 3s to low 4s. My overall is still 3.3 mi/kWh from this past month.

My power was at 80% when I left and did get up to 100% within about 15 minutes of driving. My battery had been charged earlier so while it was still cold, my battery wasn't as cold soaked as it had been in the past.
 
Interesting INSIDEevs article suggests that "Even if you do see some degradation over 200,000 miles, battery failure is extremely unlikely in a modern EV."
 
Scuppers said:
Thanks for having me in. Having just read the last 14 pages about the recall, I wanted to share my experience. 'Got the car back after the recall (reprogram), was very concerned that performance was noticeably reduced, wished I'd done some timed runs before the recall to confirm my suspicions, but kept in mind that the car had been sitting outside at the dealership, temps mid 30°'s F. Got home, spent most of the day reading all 14 pages of this thread, esp. regarding the loss of settings. Happy to report- "we're back!", got behind the wheel, hit the toggle, and sure enough, it was set on GREEN mode. Back to sport, and all is quite good (after turning traction control back on).
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I got my ride back too, and I was worried the reprogram killed the pep. Wish I’d clocked some runs before the recall to really know, but I blamed the cold. My car sat outside at the dealer in the low 30°F chill. When I finally hit the road, I was relieved that green mode was still the default. After flipping back to sport and reactivating traction control, the car felt legit again. It’s wild how a recall tweak can mess with your groove ;)
 
I'm unsure what you both refer to as "turning the traction control back on."

The default is DSC (Dynamic Stability Control) on, which is the ideal combination of settings to safely drive the car, including sporty driving. "Dynamic Traction Control" allows a bit of wheel spin on loose surfaces (such as in snowy or slushy conditions) to aid in getting a bit more forward traction, whereas DSC would simply cut torque to the slipping wheel(s). Test after test, including by members of this forum on their YouTube channels, have demonstrated that switching from DSC to DTC doesn't actually make the car any quicker.
 
The car also defaults to mid setting, so not sure how these cars are coming back after being updated with the default set at green
 
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