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V10 Loss of Range: 5% Range Loss in 2019 Model 3 After Install of V10 Update
- Thread starter SynapticAcid
- Start date
I had a similar experience last winter, where after a software update, I was suddenly seeing much higher power drain, and then a couple of months later, it went away after another software update, just as suddenly. :-/
Immediately after v10 update I've notice an interesting behavior in my June 2018 X 75D :
If I come home at 15% or less, during next 2 or 3 hours it will drop by 7 to 8 %, so 15% will become just 8%.
I was shocked first time I saw it, but my car was connected and charging was scheduled for later that night. So I checked a few hours later and the charge did not drop anymore. Same happened a couple times again after that (I would say it happens every time I come home with less than 15% which is not often). It's not happening with higher charge levels.
Also noticed a drop in rated distance at 90% - dropped 3% since July. I suspect it could be after v10 install as well.
If I come home at 15% or less, during next 2 or 3 hours it will drop by 7 to 8 %, so 15% will become just 8%.
I was shocked first time I saw it, but my car was connected and charging was scheduled for later that night. So I checked a few hours later and the charge did not drop anymore. Same happened a couple times again after that (I would say it happens every time I come home with less than 15% which is not often). It's not happening with higher charge levels.
Also noticed a drop in rated distance at 90% - dropped 3% since July. I suspect it could be after v10 install as well.
A day before a scheduled service visit to check this out, Tesla got back to me to confirm the degradation was related to that firmware update. Was glad they shared that - I would much prefer them acknowledging it than it remaining a mystery. My biggest complaint, as usual, is the lack of communication from Tesla about when things like this happen and why. I'd be happy giving up a few miles of estimated range if properly explained and presumably resulted in longer service life or improved safety. Not sure I'll get those miles back with 2019.36 when it lands on my car, but we'll see.
As Far as I recall, people here have been reporting Tesla techs telling them it's a firmware issue for 6 months now. That's starting to sound like a blow-off reply to me. "It's a bug, you really didn't lose range" - they can just keep telling you that forever: "Oh, it hasn't been fixed yet"
I have a Dec 2018 Mid Range that when new had 264 mi @100%. I'm now down to 243 mi @100%
Hmm. That would concern me. Almost an 8% drop in less than a year. I would recommend trying to recalibrate by driving down to less than 10% and then charging to full and see if there’s any improvement.
I've done the recalibration (<10%-100%) on my Nov 2018 MR a couple times recently and my range is at 248 miles @100% vs 264 when new. 80% now shows 198 down from 212 when new. While it could be degradation, I think that would be gradual like my LEAF vs the large drop I saw after a software update.
Im on the same boat with my midrange. used to have about 237 miles at 90% im only getting 203 miles out of 90% charge. started dropping miles like crazy 3 software updates ago. have tried everything yet it keeps going down with almost every charge. kicker is mine barely broke 3000 miles.
That's about 15% loss from new. Now, as @MP3Mike mentioned, the warranty is for 30% loss... within 8 years. However, there's no way that losing 15% in the first year should be considered normal. I would at least schedule service through the app and in the comments write that your 100% range has dropped from 264 to 223. They will probably do some remote diagnostics and call you.
I'm wondering if we're seeing an artifact that the mid-range only was produced for about 6 months... and therefore there aren't that many. As a result, some change to the BMS was made and the mid-range is getting miscalculated. Either that, or when they temporarily produced the mid-range packs something about that process made them wear faster
Temperature.
Is this your first cold season with a Tesla? As it gets below 50% there is a noticeable battery heating hit. Explains morning drive using more energy.
Yikes! I’m surprised more folks aren’t picking up on this. There sure are many more affected than only those that have posted in this thread.
me too. Not worried. My s had 5% loss in first year. This is about 6. I also suspect from various posts that they are messing with estimate computation.
How do you figure 6%? More like 11% compared to my 3 that hasn’t lost a mile. I just charged it to 90% this weekend and it stopped at 291 miles. 260 miles is an 11% decline.
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