After a recent software update on my 2019 Model 3 Performance (30,500 miles) my displayed range after a 90% charge dropped abruptly from 255 miles to 244 miles. My driving and charging habits have not changed. I read something in the software release notes about this latest release having a new, and presumably more accurate method for calculating range from charge level. Has anyone else noticed this? Is there a fix, or is this new range the “real” range?
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Sudden decrease in displayed range M3P
- Thread starter swperk
- Start date
You will never know the real range without driving it until it stops.
I believe the release notes mentioned trip planning range estimate improvements. But firmware features depend on exact car configuration so ours may be different.
I believe the release notes mentioned trip planning range estimate improvements. But firmware features depend on exact car configuration so ours may be different.
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Candleflame
Active Member
thats normal. your BMS just decreased your available battery capacity. it usually happens in chunks.
There is no fix for this. the battery will just naturally degrade (which will happen in chunks as the BMS needs a few voltage readings to make that calculation. Thats what the 4.5% buffer is for)
There is no fix for this. the battery will just naturally degrade (which will happen in chunks as the BMS needs a few voltage readings to make that calculation. Thats what the 4.5% buffer is for)
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Same here ('21 SR+ 3). Was holding pretty steady between 245-250 miles for a projected 100% charge the past 9 months, but last few days after installing 2022.16.3 the estimated 100% has gone from 250 -> 243 -> 241 in quick succession.
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golfpilot
Member
Really wouldn't worry much about what the car says for range. If you are noticing loss of range in actual driving, then look at it closer. My car 2018 LR model 3 with 70k miles only full charges to "262 miles" which would equate to 16% degradation. But just last week I used 68.5kwh on a single drive (74kwh battery pack) and wasn't pulling into the charger with 0 suggesting much less degradation. I'm finding the increase of new superchargers, and 250kw chargers, is shortening my road trip travel times at a greater pace than the battery is degrading.
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AlanSubie4Life
Efficiency Obsessed Member
Couple month old post - but do you have the screen capture for this? Seems hard to believe. I’d expect max you could draw above 0% would be 63kWh or so. Not 68.5kWh. Never seen such a huge discrepancy.
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Set it to % and ignore range its all just an estimate. Could be more could be less depending on a bunch of factors that will cause it to fluctuate.
This isn’t anymore accurate/inaccurate than the miles to empty we got from our ICE cars.
Perfect example of when I used to drive my Prius C with a 8.5gal tank to LA and would make it on fumes going 80mph or use half a tank drafting a semi at 65 the whole way.
This isn’t anymore accurate/inaccurate than the miles to empty we got from our ICE cars.
Perfect example of when I used to drive my Prius C with a 8.5gal tank to LA and would make it on fumes going 80mph or use half a tank drafting a semi at 65 the whole way.
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Candleflame
Active Member
range is very important when you use up the entire battery capacity. If you car has 15% degradation you have 15% less range. It is what it is.
370-420km is the sweetspot where youll struggle to make it if you just have it set to %.
Having it set to range is not estimate range (thats in the tripmeter ,same as any ice car), rated range is a unit of energy not distance.
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We still don’t know if OP is experiencing early degradation or it’s just the car adjusting estimated range based on driving. Nobody is disagreeing that range loss is not good. Like I said earlier it’s like having your gas tank shrink overtime.
In my case I just assume i have 300mi vs 358 advertised and I plan based on that. Even though I know I can go further by doing the speed limit or maybe even go below. I can follow a truck if I really need to make it stretch. Just like I would in an ICE car.
Range is why I went with LR on Aeros and not the P.
In my case I just assume i have 300mi vs 358 advertised and I plan based on that. Even though I know I can go further by doing the speed limit or maybe even go below. I can follow a truck if I really need to make it stretch. Just like I would in an ICE car.
Range is why I went with LR on Aeros and not the P.
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I stand corrected.
This from tesla.com
“Displayed range in your Tesla is adapted based on fixed EPA test data, not your personal driving patterns. It's natural for this to fluctuate slightly based on how you charge the battery throughout its life and how the onboard computer calculates range.”
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