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Firmware 6.1
- Thread starter J1mbo
- Start date
I speculate people are thinking that there is little battery pack heating while the car is in Range Mode. I think people are also speculating that with less pack heating that this may somehow be detrimental to battery life/longevity.
^^ Agreed. Is there anyone here who has a direct line to Mr. Musk and who can pass on how Tesla is being perceived on this issue? I think he needs to know. Or someone should tweet him about this. No?
Cold, as long as it's above a certain point, isn't bad for the pack. It's attempting to charge when too cold is the issue, which is why the car limits regen regardless of range mode being enabled. While the battery can't produce as much energy when it's cold, it's not harmful either... heat is what bad for it,
As a matter of fact Elton once said something to the effect of the pack on cars in Alaska lasting forever...
Andyw2100
Well-Known Member
With what they've told us about torque sleep, and the efficiency gains to be had from it being more significant with range mode on, Tesla is basically encouraging us to use range mode as much as possible. There definitely should not be anything about range mode that is in any way detrimental to the battery.
toto_48313
CAN P #5
got .167, and there is a huge energy management improvement.
Was not able to get less than 450 Wh/mi before ( due to cold weather here (-5 F average), and since the update, I'm back to a much normal 400 Wh/mi ( in very cold weather -10 F)
Was not able to get less than 450 Wh/mi before ( due to cold weather here (-5 F average), and since the update, I'm back to a much normal 400 Wh/mi ( in very cold weather -10 F)
That's good news, toto. How about you, Andyw2100: weren't you one of the D owners not seeing any benefit under .139/.140?
The question is still open as to why some cars saw significant efficiency improvements (mine is one of them) under .139/.140, and others did not.
The question is still open as to why some cars saw significant efficiency improvements (mine is one of them) under .139/.140, and others did not.
Andyw2100
Well-Known Member
The one round trip my wife took yesterday we saw absolutely no improvement.
She drove to work with range mode on, but then home with range mode off, because by then I had read here that the issues with .167 were limited to range mode being on, and we were much more interested in getting her home without issue than in testing efficiency.
I noticed that there was some ice build up in the wheel wells that I removed, but I really don't think that could have been what was causing our efficiency issues.
I'm taking the car this afternoon, and will see how it goes, but will also be driving with range mode off, because of the issues with .167 and range mode.
Below are the numbers and comparisons to EV Trip Planner for yesterday's trips.
| EV Trip Planner | ||||||||||||||||
| Estimates: | ||||||||||||||||
| Date | Distance | RM | Total Energy | Avg Energy | Hwy Speed | Cabin Temp | Outdoor Temp | Wind | Elev Change | Conditions | Distance | RM | Total Energy | Avg Energy | Spd Factor | |
| 2/23/15 | 54 | 72 | 21.3 | 394 | 60-65 | 68 | 2 | 1CW | (754) | Clear, little slush | 52.6 | 67 | 20 | 380 | 0.96 | |
| 2/23/15 | 53.5 | 82 | 23.9 | 447 | 60-65 | 68 | 2 | 1CW | 754 | Clear | 52.2 | 76 | 22.7 | 435 | 0.96 |
mesalum
Member
Andyw2100
Well-Known Member
You're a couple of days and a few hundred posts short.
.167 was pushed to people starting on Saturday afternoon. Don't use range mode. Read the forums for more details. Oh, did I mention--don't use range mode.
Andyw2100
Well-Known Member
Good point.
mesalum--If you get .167, don't use range mode. Read the forums for the details. If you get a version later than .167, personally I still wouldn't use range mode, but read the forums for details, and do what you will.
I'm going to guess that without range mode this update will have no impact. I'm still of the opinion that issues are being caused due to torque sleep changes that are potentially too aggressive or that need further tweaking. To be fair to the QA people the precise circumstances to recreate this seem to be many and varied variables, I.e. The only common factor so far is range mode, presumably because the changes only operate in that mode.
Maybe that is why they have made most of the improvement only accessible through range mode - it can be turned off if stuff goes wrong.
I seriously hope they're not still pushing .167.
@mesalum: If you end up with .167, please let us know (pic preferably) and I'm going to personally call Tesla HQ and rip someone a new one because that would be very foolish of them.
@mesalum: If you end up with .167, please let us know (pic preferably) and I'm going to personally call Tesla HQ and rip someone a new one because that would be very foolish of them.
breser
AutoPilot Nostradamus
If the problem is with torque sleep in .167 then it's not relevant to @mesalum since he doesn't have a Dual Motor car according to his signature. At least I haven't seen anyone reporting problems with RWD cars on .167.
mesalum
Member
Andyw2100
Well-Known Member
That could be, but back some time ago Jerome Guillen did state that the benefits of torque sleep would be seen both with range mode on and off, but that the impact would be more significant with range mode on. It's possible that the most recent update tweaked settings for torque sleep for both range mode off and on, so I'm going to record the data for my trip, just to see what's what.
There isn't a concrete answer on what range mode does exactly, but there has been a lot of speculation that it allows the temperatures to float both higher and lower before kicking in active cooling. High temperatures absolutely degrade the battery, but might be a worthwhile trade-off in order to make a trip that would otherwise be impossible (say: the drive from Los Angeles to Las Vegas) ... Cold temperatures are fine at a low drain rate, but doing 0-60 runs with a cold battery is not great either.
We do know that range mode changes more than just limiting fan speed, since it causes more noticeable changes in the 'torque sleep' behavior, and also seems to be a trigger for the loss of power issue under .167.
If there were no down side to Range Mode, it would be the default.
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