I think this is probably related to the heat here in Dallas, but I have seen a huge drop in range that started about a month ago. Is this normal, and will it come back in the fall?
Sudden Range Drop
- Thread starter wrf2e
- Start date
For context, That graph starts in March 2019 and goes through today. The big drop that starts around 8,900 mi is July 8th.
If it makes you feel any better here is my history:
Changes have generally occurred around software updates and after long road trips.
Changes have generally occurred around software updates and after long road trips.
Interesting. I did get an update on 7/10. Maybe it is related to that. I am currently sitting at a 12% degradation, which is a bit concerning.
Have you charged to 100%? Honestly, you don't have a loss of range, you have a common issue of all the pieces not able to calculate a number correctly. Believe it or not, you really never know when a battery is full, you can only guess at it.
Stop worrying, your battery isn't degraded and your car is still healthy.
Stop worrying, your battery isn't degraded and your car is still healthy.
I have a long range AWD. Mine started dropping around beginning of June. Was at 0% degradation then and has gone down steadily to 6.86% degradation now. Not sure if it's software or warmer weather. But I'm in Canada so it's really not that warm... Got my car in October and was at 21k miles at beginning of June and 28k now.
Edit: I did two charges from low to 100% and that hadn't help at all. It did help back in November when I had a small drop.
ucmndd
Well-Known Member
It could be if there is actual battery degradation. If it's just battery system calibration issues then probably not.
Edit: even then I wonder if temperature affects cell voltage which would be one of the things the system measures.
AlanSubie4Life
Efficiency Obsessed Member
Hmm. Seems rather severe. If it continues you’ll probably get a warning at some point.
Hopefully just software. My small range reduction (5 miles) correlated with the last software update for me. But your issue is severe. For me, there is obviously a slow 1-mile downward trend but the sudden step downwards is probably just software. But my step was 5 miles overnight, and yours appears to be more like 20+ miles over 3k miles.
My guess is that you actually have a problem and the car will warn you soon. You can try to charge to 100% one time to see what happens, but would not hold my breath.
Hopefully just software. My small range reduction (5 miles) correlated with the last software update for me. But your issue is severe. For me, there is obviously a slow 1-mile downward trend but the sudden step downwards is probably just software. But my step was 5 miles overnight, and yours appears to be more like 20+ miles over 3k miles.
My guess is that you actually have a problem and the car will warn you soon. You can try to charge to 100% one time to see what happens, but would not hold my breath.
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AlanSubie4Life
Efficiency Obsessed Member
How many miles per month do you drive? Trying to figure out about how many miles you had on 7/10.
AlanSubie4Life
Efficiency Obsessed Member
I also got my MR in 2019 March and also experienced initial range drop in early July. Since then, the range dropped 2 more times. Now stays at [email protected]% estimated since last OTA update. I think is staying at 408 for 2+ weeks already. Although my timeline is very similar to yours but your drop seems more steep than mine.
I've read a lot of your posts here on TMC, and think of you as being a very knowledgeable guy. In your opinion, is it worth forking over 20 bucks for the Stats app? I know you can't say that every single person is gonna find it to be worthwhile, but in *your* opinion do you think it is?
I love graphs and statistics about my car, and have been trying to decide what aftermarket solutions (like TeslaFi, the Stats app, etc.) are worth signing up/paying for.
So far, I'm trying to decide between TeslaFi and Stats. Starting to lean toward Stats.
Thanks for any advice!
AlanSubie4Life
Efficiency Obsessed Member
For me, Stats at $20 just doesn't seem like a lot (it was $10 when I bought it though). And then I'm done with the purchase. So I would say it is worth it for me.
I don't believe in subscription model stuff, so TeslaFi was not an option. TeslaFi looks to me like it has a lot more features for someone who is really into tracking everything - that's not me. I just like to understand kind of overall how things work and the basic statistics; I don't need to know exactly what happened on every drive.
I barely use Stats, but occasionally it's nice to see the data and I'll bring it up. It has Apple Watch integration, which I occasionally use. It will tell me when I've left the climate on, left a door open, etc. It's definitely got some additional features which are nice. Well worth $10, or $20.
Stats tries not to impact vampire drain, but with the recent reductions, it MAY be a factor. I haven't had a chance to run experiments to see. However, it's easy enough to log out of the app and then log in when I'm interested (I just lose the continuous tracking data - but again, I don't care that much). I know when I was logged out I got just 5 miles of drain in 3.5 days, which is pretty good. When logged in, it still seems that I might see 3 miles per day of drain (but again, haven't REALLY checked this - it may be just fine, but I don't have opportunities to properly test it & compare).
@GregRF, I haven't checked my Model 3 to see if there has been any loss, but my nephew texted me today very concerned about his because his Model 3 in April and it has dropped about ten miles. His would look like your chart, as far as beginning and ending points. I have had my car a little over a year, and I know that in March, on a trip I charged it 100% and it was at 310 miles.
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