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I would test this out if my miles were much lower.....maybe after the winter if I don't see it go back up to 243-245 after doing multiple 100% complete charges
taurusking
Member
I've done this and reported my findings upthread. No effect. I pulled both fuses for 20 minutes. No change to displayed range. I contacted service regarding this procedure, the service advisor asked all of the techs at the shop and said this process does nothing.
It should reset the range algo.
Interesting. I can attest to this working under a previous firmware with a previous battery. No idea if it still holds with newer rev. packs. I guess it really depends on whether or not the memory on the BMS is volatile.
mknox
Well-Known Member
SeminoleFSU
Voluntaryist
mknox, I'm convinced you must have some dead cells... Generally speaking, I've noticed most folks with A packs have better degradation #'s than some of the later revision packs. I think you have an A pack right? Also, folks in colder climates generally do better, although not as consistently (at least by my perception)... you're in Canada where avg temps stay colder than most American owners..... between those two things, I would expect you to be a lot better off than most in terms of degradation #'s, and you're not.... therefore dead cells? Just a theory...
S60 getting a bit frustrated. Now at 308 w/m average with about 20 k on the car and only getting about 169 at 90%
When I got the car it was getting 185 at 90%. Even as my avg w/m has gone down my rated range has also gone down
Teska looked at it twice and keeps telling me there's no issue with the battery. Full charge I only get 189 now.
When I got the car it was getting 185 at 90%. Even as my avg w/m has gone down my rated range has also gone down
Teska looked at it twice and keeps telling me there's no issue with the battery. Full charge I only get 189 now.
Would be interested to see @mknox diag screens as dead cells should be visible in comparing module voltages. Perhaps with the soon to be released @disharmony jailbreak?
My experience is that the trips app does not count all power usage by the car. No one has explained what is or is not included, and my experience has been that occasionally that app becomes a bit "sticky" and seems to miss both some mileage and power usage on "since last charge" in certain conditions (especially road trips).
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I have, but it didn't seem to have any impact. Then again, my car hasn't lost any range with over 43,000 miles on my replacement pack.
mknox
Well-Known Member
Yes, A-Pack and I live in Southern Ontario which has a climate similar to, say, Chicago.
I asked my Service Center about this a year or so ago when the big dip occurred. They told me that they ran some diagnostics and didn't find any problems with the battery. I didn't get any kind of report other than a note on the Service Order saying "operating as designed" or something like that and the conversation I had with them at the time.
I actually "planned" for this level of degradation when I ordered the car (prior to first deliveries in 2012) so it is not like I can't make trips or anything. It is a little odd to see the variations between owners, though. A while back, I set my displays to show % rather than Rated Miles and it has reduced my anxiety about it significantly :smile:
Well Tesla came back and they admit on my service report that my capacity has gone down 10% and faster than average but they still say its normal and should "average" out as fleet averages catch up, whatever that means. Not sure how I plan any trips now if my distance between supercharges is more than 189 miles. Love the car, but this is worrisome.
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