2024 Plaid rated range displayed is 347 vs EPA 359

[aerodyne]

I think your rated constant is probably like what you say, around 239 Wh/mi. Because if we assume that is correct, then your threshold value would be .239x405 = 96.8 kWh, which is consistent with what others are saying here.

Agreed

However, to get actual miles roll off to match rated miles roll off, you would have to drive at .955x239 = 228 Wh/mi. Is that about what you are seeing?

Sounds about right. YTD is 227 wh/mi

Is your current pack capacity below 96.8 kWh now? In other words, are you seeing degradation in rated miles?

Yes. 93.1, climbed back from like 88 last fall, current RM 390-392

Is the old original energy screen that shows projected miles remaining not available on the display anymore?

Have the new screen, but don't use it since SMT gives the same data.

 

[AlanSubie4Life]

This thread was created to discuss this exact problem and very little of the discussion has been about this problem.

People with 2024 Plaid with 19” wheels are welcome to post as many pictures as they want with:

• Energy Screen as it exists on Model S *all* relevant pages.
• Charging screen captures on large charge events while still plugged in, supercharging events may be ok too (both miles/km and kWh concurrently)
• As many pictures of range & percent as they want
• Pictures after changing wheel config.
• Etc.

Happy to help interpret with quality data from the car. But in the end all that matters is the energy available. And we know what is happening from SMT AFAIK (see above). There is not really any mystery on energy available. It would be nice to know the constant of course. (See above; people have already figured it out via various other means using SMT, so no mystery there either.)

Max displayed range is the other piece of the puzzle which it sounds like we know as welll.

This issue is not limited to Model S. Model Y 2024 is stuck at 304 miles max (degradation threshold about 79.5kWh) with initial rated range of 310EPA but has now been modified to 308EPA on web page. I think they have a lot of confusion over the testing with the new EPA mode rules, and everyone got sh**canned at Tesla, so there is no one to clean it up now. Likely total chaos. They just put numbers on the low side which is better (easier for reduced customer b**ching) in the event they do an update to the constant later to get the range “correct.” They have done this before with software updates, though it has usually been much quicker. But again, no one works there any more. Maybe they are trying to have Optimus take care of it?

 

[AAKEE]

Yes. 93.1, climbed back from like 88 last fall, current RM 390-392

If I remember it correctly you started charging low? (Or maybe I mix you with another model S owner…)

Did you regain capacity after this change in charging tactics?

 

[Nabush]

If I remember it correctly you started charging low? (Or maybe I mix you with another model S owner…)

Did you regain capacity after this change in charging tactics?

Would be interested as well.

My 10/2021 Plaid with 41,000 miles was lately showing 89.1-89.5kwh (bought at 37k). I have been charging around 60%. Just did a 2000 miles trip to Utah with a lot of supercharging, now saying 87.5kwh... Car was almost never supercharged, only 5% of the kwh are supercharging per ScanMyTesla...

I also never charged the car at 100% since I have it... Cell imbalance is low at 4mV so not sure a load cell balancing at 100% is required...

I have been starting last few days before the trip to charge at 50% and will continue, but would be curious how you went from 88 kwh to 93kwh...

Thanks

 

[AAKEE]

Would be interested as well.

My 10/2021 Plaid with 41,000 miles was lately showing 89.1-89.5kwh (bought at 37k). I have been charging around 60%.

You might be better off charging to 55% max, per principle.

But in your case with 10% lost, the border between low and high calendar aging has probably raised to ~ 60% so.

For next Plaid, stay at 55% or below to reduce the calendar aging by 50%.

 

[Nabush]

You might be better off charging to 55% max, per principle.

But in your case with 10% lost, the border between low and high calendar aging has probably raised to ~ 60% so.

For next Plaid, stay at 55% or below to reduce the calendar aging by 50%.

Yeah I was doing that on my Model 3 LR + and after 2.5 year - 22,000 miles I had almost no battery degradation

Sadly buying used does not tell you charging habits from previous owner... My current Plaid was driven in California for 37K before I got it... Battery power is still very good, I see 830KW plus @ 90% @ 120F ...

 

[AAKEE]

Yeah I was doing that on my Model 3 LR + and after 2.5 year - 22,000 miles I had almost no battery degradation

Good!

Sadly buying used does not tell you charging habits from previous owner... My current Plaid was driven in California for 37K before I got it... Battery power is still very good, I see 830KW plus @ 90% @ 120F ...

As most people use ~80 (-90)% its not unexpected.
Not a problem either, the range should be quite OK anyway!

I would also guess that using high power often means that also will cause degradation.