What the 80% Software Update did to the 2021 Chevy Bolt
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- čas přidán 13. 02. 2022
- I was never able to get the 80% capacity that GM constrained the battery to. This should be 207 miles under standard conditions when fully charged.
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I charge mine up to 75% and average number usually shows 242-246 miles. I do live in FL and 95% of my driving is city (50 mph or less) though, so the weather and type of driving definitely plays a huge role. I did charge it full for a longer road trip recently and it showed 317 miles.
My 19 (which has the new battery) is driven mostly in the city. 45 is our towns top speed. I baby it on take offs and stops. My capacity averages 300-325 on the dashboard. When I drive to Tulsa Airport and back home (highway, 75 mph), the car shows app. 230 on the dashboard the next morning after a night of level 2 charging. The range shown is based on your latest driving.
Let's not confuse range with capacity. Your 300 mile range is based on your rate (miles/kwh) and the capacity of the battery at that time. The higher miles/kwh the more predicted range you get.
My demonstration suggested with no history, the capacity should be at the default of 3.9 at 66kwh@80% is 207. Again, with history zeroised the default range should appear.
I had the same issue. I always set hilltop reserve before and it was a true 90%. But I'm not getting my full 80% now, only about 155 miles range at 75 degrees. I suspect the fix was either less than 80% or perhaps changed some other setting that resulted in less capacity.
Try clearing the miles/kwh counter, see if that helps.
Just finished the 6K miles to do the battery check software update and I’m good to finally get 100% charge! Love being back to normal! I hate that “don’t take your eyes off the road” notice which forces you to take your eyes off the road to cancel it! Give that engineer the boot! Also it estimates by your actual driving, if you turn off the heat and drive it will guess 256 miles!
Good to hear. I'm thinking about getting a used 2020 bolt with the 6200 sw test/ charge limit.
@@stem_saving1644 also don’t let them tell you the shifter is a joy stick ,it is a slap stick! Move the console forward and use your finger tips to shift! Many complained that they can’t grab the joystick and in over 3 years driving it I never have! Hope you got the premier as the digital rear view mirror and over head camera are all I will own from now on! I can see 6 lanes of traffic behind me with no blind spots actually working better than full size truck mirrors!
Don't own a bolt yet (maybe will get a 2017 this weekend if I'm lucky) so not sure 100% how this update works but since the update limits charging to 80% then shouldn't you be charging to 100% (of that 80%)? Or are you charging 100% of that 80% and still getting only 150 miles? Also, does the update prevent driving below 70 miles of range left?
The 80% should be 207. The lower driving limit was removed with this update. It's more of a hassle if anything, but will be worth it in the end.
Does the software update restrict dc charging?
It's all dc charging. Even ac gets converted to dc. But yes fast charging has the same limitation.
It a lot of the shots, you battery was still cold, cause you can see that the regen is not green. Wouldn't that affect your range/GOM?
Not when it's sitting being charged. The system should only care about net usage. When its sitting and the distance counter is cleared it should show max mileage at or around 50F+
I have always set my car to charge to 80ish% and that's about the same range numbers I get when temp is below freezing. Cold weather diminishes the capacity of the battery so at full charge the battery does not have the full 66kwh capacity. I have also found that the heater uses more energy that the AC. In the winter I average around 3.4M per KWH. In The summer I get around 4. If im not running heat or AC I'll have see 4.5+KWH per mile. So between the lower battery capacity and higher energy usage range will be about 20% lower in below freezing temps. That pretty much lines up with the range estimates you are getting at 80%. That is one of the problems with the range rating on EVs. It is really the best case scenario base off moderate/warmer temps and city driving where EV's are most efficient duo to regen.
Agree with using climate control and kwh. But with history zeroised and no climate control on, after a full charge to 80% the default should estimate 207 miles when it's 50-60f outside and it's just sitting.
Once you take off and use climate control, it should drop. My point it wasn't near that after a charge just sitting there.
I have a 2020 Bolt and had the software update installed a couple of months ago. I’m currently showing 230 miles of range at fully (80%) charged. However, my range estimate drops to 197 if I turn on the HVAC. Sometimes it goes back up if I just turn off the AC/Heat and leave the fan on. Sometimes I have to turn off the whole system. Outside temperature is about 70 here today and has been going down into the 40’s at night, but the car is parked in the garage.
What's your miles per kwh? Assuming your not driving lots of hwy speeds? Good to hear your getting your range.
@@stem_saving1644 it was 3.8 over the last few hundred miles, which has been a mix of city and freeway driving, but not much use of the HVAC system. Over the lifetime of the car, 19,163 miles, it’s 3.1 miles per kWh.
After the software update, my 2020 Bolt range was only 152 miles. After many charges the range is now 175 miles.
That's about what I'm seeing
Range number shown is a calculation based on recent miles driven, say the last 50 or so miles. The recalculated range which shows up after you charge it will still be based on that last 50 miles. 80% of 259 should be about 200 miles if your average mi/kwh is about 3.9, but you won’t get that when it’s cold out, unless you turn off the heat, or drive really slow.
Is that speculation or is this documented somewhere? The trip counter should clear the miles/kwh and report the default values (3.9) when the distance is zeroised.
@@stem_saving1644 - the range calculation is next to the battery charge level (fuel gauge). Reset the trip, and the average mi/kwh (along with the tripmeter) will start from 3.9 always, and immediately start averaging the current mi/kwh as you drive. This won’t calculate range, but you could calculate it based on current average, and estimated kwh left in battery charge. 60% charge level on a 60 kwh battery is 36 kwh x current avg mi/kwh (say it’s 4.0 mi/kwh), this gives a range of 144 miles.
Yes, I agree. I had shown that in the video. However, with zero range history and around 50-60f ambient conditions, the battery should reveal its full range. 207 miles for the 80% update. It wasn't.
The calculation should be based on history (now zero), state of charge/ health, and external temp. With history being zeroed only soc/soh and its default miles/kwh rating should drive the calculation algorithm.....
I had a bad feeling that the range would tank so I didn’t do the 80% update.
If you have a newer bolt the likelihood of a fire is pretty low. Getting more range than the 90%/70 recommended limits, but still not the full range.
Does anybody know this software eight update can be removed before before the new batteries are installed whenever that would be.
I’m trying or in the process of buying a 2020 now and I wanna make sure that this software update hasn’t been done I guess it ends in 883 so I’m gonna try to find out through the Vin number before I buy the car because that won’t work I’ll buy a new leaf plus which will give me 226 to240
I'm assuming the updated sw isn't needed for new batteries when they are installed.
New battery comes with new software.
Did you get the upgraded batteries what's the sw version? Or is this conjecture?
You are getting 3.3 miles kwh. Yes, your guess on the meter is just that due. My Bolt at 80 displays 211 miles. I have a 2020 Bolt LT with 26k miles driven.
What I find odd is when the kwh counter is cleared, it should default to 3.9 since it has no trip data to evaluate on. So, in my mind, it should list the 207 and then reevaluate as one drives. Just as it did when I first had it before "the fix".
The 19 or so miles is far to large of an error at almost 10%....Without being driven and the counter cleared.
Thanks for the comment
We are seeing the exact same thing. It dose not compute.
I have a 2020 Bolt with the software imposed limits and I'm getting about 140 on a level 2 overnight charge. Temperatures have been in the 35 - 45 degree range. The dealer analyzed the battery, says everything is fine with it, and that the charge #s I'm getting are reasonable. I get that this "reasonable" stndard suits GM but fact is I'm stuck with a battery that's performing far far below what I used to get. And note I've only driver 7500 miles since I bought the car. At this rate, I'll have the software imposed limitations for several more years. I don't call this reasonable. I call it GM not living up to its responsibility. I notice online that a law firm is working of a class action suit. I'm wondering if I should join in.
That's what's troubling for the software fix, if you take years to unlock the full capacity, then by the time it's unlocked, the warranty could be over. That was my gripe. If I'm paying for 259 miles, I had better get that or pay less if I'm getting less. The bolt got its pack replacement, and it seems to be doing well. Probably should make a video on it.
On my 2018, 60kwh batt, the same thing happened at first after the update. Very low range prediction, ~151mi, or ~3.1 mi/kWh.
So I took a road trip on a 60 degree temp, easy, flat, 45mph, 150mi route. When I charged it again, it was back to a reasonable range prediction.
Fun fact: Your trip meter will always reset to 3.9, but whatever number it displays, it plays no part in the car’s range prediction calculation. Your range prediction is based on your available capacity and mi/kWh history over the previous ~100 miles or so.
As far as my research goes, the car nowhere displays either the capacity or the calculated mi/kWh. I miss that about my Nissan Leaf.
I'm still a little skeptical on the range calculation. If the history is cleared, then it should display all default values for range.
Unless the history isn't erased when you clear the trip counter. Which then means it's not really cleared nor is the miles/kwh accurate.
@@stem_saving1644 The trip meter does not affect your vehicle’s range calculations, but it can display one portion of the vehicle’s data-set (if it displays only the last ~100 miles). It also uses temp, available voltage environmental controls, etc for the range calculation.
@@stem_saving1644 Also, a clarification, clearing your trip meter does not clear the vehicle’s internal memory, just the trip meter’s memory.
Can you reference that to GM tech manual?
I understand that. However, if the trip counter is cleared, it should not have any variables related to efficiency other then the default efficiency, outside temperature, and SOC/SOH. That being said, after being fully charged it should display a nominal of 207 miles.
Efficiency and range while driving is an entirely different discussion. My focus is on the rated capacity and range after a full charge.
Just had the update done on my 2022 Chevy Bolt EV 2LT with about 21k miles on the car restricting my charge to 80% and with a full charge, 80%, I am showing 240 miles of range with a outside temperature in the upper 60f degrees . I normally get about 4.5Kw/per mile the way I drive.
Clear the trip counter and then charge. Id be interested to see what it predicts.
@@stem_saving1644 I do that after every charge because I use my trip meter every day to track my mileage. Today it's showing 244 miles of range on my GOM and that's the center number. Also yesterday I got an average of 4.6 kw/m. I was hesitant to get the update but I just wanted the peace of mind if the unthinkable happens so GM can't use it against me saying I didn't get the update so it's not their fault.
That's interesting, does the miles/kwh change?
@@stem_saving1644 Depends on how and where I drive but the average is around 4.5. On the interstate it may drop to 3.2 but around town I've had as high as 7.0 but the overall average is around 4.5. I drive in variety of situations so it does vary.
Right, understand the averages. But when the trip counter is cleared, the miles/kwh should default to 3.9 which is what the car is rated for. ... just as shown in my video. When that's done, the default range should be 207 under ambient normal conditions.
I don't even know what my full range is. We leased our 2020 Bolt in March of 2021, not long after they recommended not to charge above 90%. I had it set at that until this week when I finally did the new software update. So far the range is really low, I also live in cold WI. I'll see what we are getting for full range and update soon.
So you didn't get a new pack? If you reset the range counter and don't use heat, that will tell you your true mileage. Warmer weather also increases this.
@@stem_saving1644No, 2020-2022 does not get a new battery unless the software flags it. You can only charge to 80% for 6,214 miles, if no problem is detected it automatically goes back 100% charge. Yes, running the heat drops range significantly, we also have had a Volt for 10 years, so we knew to expect that.
I guess if it's leased, it doesn't matter. If it's bought, I'd be making calls to get it replaced....I think they worked out the bugs now. Thinking about getting a second bolt. Leaf range is dropping, and I have to drive further now. Unfortunately, the msrp is still being pushed at the dealerships.
I just bought my 2021 Bolt Premier a week ago. The dealer charged the battery for me. It read 159 miles. I drove 70 mph all the way home. It was 110 miles. The temperature was 40 degrees Fahrenheit. I used no heat other than heated wheel and seat. I live in Wisconsin.
I charged the car with L2. The range jumped up to 172 miles. The last four years, I have been driving a Chevrolet Spark EV. I run no heat in car or just to clear the windows. I use a 12v heated blanket across my lap, plus I dress warm. Most of my driving, is city driving. Next L2 charge, my range was 188. My last L2 charge, my range was was 208. My miles/kw is 4.6 . It helps, that temperature has been in 40's to low 50's degrees Fahrenheit.
I hope this helps.
@bresina63 we finally got the battery replaced and are seeing similar numbers. I'm in the market for another 2021 bolt, any chance you'd share your purchase price? Curious to see what they are going for now. Did yours have the sw update or total replacement?
You should know that the range changes according to your last trip
Shouldn't if the miles/kwh counter is cleared.
I went to the GM dealer that works on GM Bolts, and I was told that GM is putting on the brakes on fixing 2020 - 2022 Bolts. Looks I am going to try to trade my 2020 Bolt on something else.
I think it's a really good car, if they can sort the battery issue out. When it was new its 259 mile range was great. I think it's growing pains, the likelihood a fire is a result in every car is statistically low. I'm going to hold on to mine, but understand you have to do what's best for you.
If you watch any of my video posts here, you will see that I have been dealing with this for at least a year. I started this mess with a 2017 Bolt and then got a 2020 that was not recalled. Now it is recalled too. How long should I keep dealing with a recalled car? Another year or more?
@@sidlierle2710 you have to do what's best for you. I get it.
Almost all my driving doesn't require the full capacity. So, in the end I'll get a brand new pack for my troubles. It's a waiting game.
Still better and cheaper than any gas alternatives, in my opinion.
I think you missed completely the point. Your consumtion is not a fixed rate. In my Bolt in winter I rarely get close to 3.9mi/kWh. Its usually around 3.5mi/kWh. Of course in the spring can be easily 5mi/kWh. Seems like you consumtion was around 2.8mi/kWh
With consumption history gone, it's default should be 3.9, which should correlate to 207 miles, when fully charged. Yes, when you drive it will change. But the new capacity and range should reflect each other, they don't.
My brain is going to explode 😅
Basic math chief:)
@@stem_saving1644 I have been doing a lot of research, I just purchased a used EV today.
They have their short comings, but as a whole, just have to know what they are. I'd never go back to gas
I think this industry will revolutionize transportation.
I'm really annoyed that the update killed the range !!!!!!!
It's temporary, but yes a little annoying. Clear your trip counter and the range will go up... some.
Ohh wow mine is 146 max
Reset the distance trip counter. That should bump up the range.
@@stem_saving1644 I do that every time I charge it.
If your miles/kwh goes to 3.9, then I'm assuming your low range might be due to cold weather. If you are charging at above 50F and you still see this, something is wrong for a later model bolt. I would take it back to the dealer.
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What are you basing your view on? GM is legally responsible to fix its problems. While the car isn't perfect, it's a developing technology that will be taking over.
Has anybody found a way to reverse this software update? Also where is the onstar module? I want to physically remove it. Elon is shutting off electric cars in Russia. Don’t want my car shut off if they can.
You have to have the software to revert back. Onstar is not run by Tesla, two separate systems.
Pos
Buy a gas car! It’s amazingly similar gas mileage Every time!
Why? So I can have higher costs and more maintenance? I'll pass. Battery problem is only temporary.
@@stem_saving1644 But was it really only temporary?
@flolou8496 yes, Replacement has it back to the specified range.
@@stem_saving1644 ??? That does not sound good, you had to beg or demand that Chevy, replace something physically to have your range returned back to normal? I thought with hindsight since 2020 we the EV community, discovered the range was returned back to normal once enough odometor miles were put on the car? (was that not the case in your experience? )
It's actually very good. Didn't beg or demand anything. What's not to love, 40k miles for free on one battery, new battery, and restart of 8 year battery warranty. This was a minor inconvenience worth the wait. Great little car.