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And cabin overheat protection, too. Even though it's been cold here until the last couple of days, with the strong Colorado sun beating down on the car, it can still get to the point where the AC will kick in to cool it.
Kudos to MorrisonHiker for offering above and beyond.
nutts1
Member
I'm an airline employee and leave my car in the employee lot 3 days at a time 3 to 4 times per month. Temps have ranged from minus 20 to 100 degrees over the past 2 years. I lose on average 5 miles per day in warm weather and never more than 10 even in the extreme cold.
Sawyer8888
Member
That is a big loss of energy. I charged my car the evening of the 21st, went away on vacation and when I started it up on the morning of the 26th, I had only lost 1% (roughly 2 miles). I have all the settings optimized and I did not wake the car while I was away. Average temperatures in the upper 70s helps I imagine.
I think I'm going to cast my vote for @MorrisonHiker 's idea that it may be sensing a door ajar, so the heating is just staying on.
Akikiki
A'-Lo-HA ! y'all
Wouldn't his Tesla app show that the climate control was turned on if the door was ajar? And he should be able to turn it off if it was on because of the door?
Tam
Well-Known Member
@DarkMatter mentioned "camper mode": It is not displayed with that exact name so please make sure "Keep Climate On" is switched off otherwise it would be on forever until your main battery pack is depleted to 20%.
I returned from a trip today with 10% charge, parked, plugged in, and set the charging to start in the wee hours during my TOUR off-peak period. Outside temps are in the single digits (about 10 or 12F when I parked at 4 PM or so, and down to 7F now). I have to park the car outdoors.
When I checked the car via the phone app, the state of charge (SOC) had dropped to 8% by about dinner time (6-7 PM), and was down to 6% just now (9:30 PM). This rate of drop was alarming me, because i did not want the battery to reach zero before charging is scheduled to start.
Do you suppose the battery was cold enough that it was using some of its own energy to keep warm, even though it is plugged in? Does not seem as if it should have. I think I have the car set to "always connected," but that should not require 4% in 6 hours or less. The comments above make me wonder if the latest update could have changed things in some way that is causing faster battery drain than usual in cold weather.
I decided to manually start charging to be sure the battery would be OK. Interestingly enough, the charge began slowly, at 12 amps or so, rather like the way supercharging starts slowly when a battery is cold. I don't think I have ever seen level 2 charging ramp up like this. Of course, if it does, I normally charge in the wee hours and would not see the ramping up. Plus the weather is rarely this cold here.
Now that it has been charging for 15 minutes or so, the charge rate is up to normal (40 amps, 9 kW).
When I checked the car via the phone app, the state of charge (SOC) had dropped to 8% by about dinner time (6-7 PM), and was down to 6% just now (9:30 PM). This rate of drop was alarming me, because i did not want the battery to reach zero before charging is scheduled to start.
Do you suppose the battery was cold enough that it was using some of its own energy to keep warm, even though it is plugged in? Does not seem as if it should have. I think I have the car set to "always connected," but that should not require 4% in 6 hours or less. The comments above make me wonder if the latest update could have changed things in some way that is causing faster battery drain than usual in cold weather.
I decided to manually start charging to be sure the battery would be OK. Interestingly enough, the charge began slowly, at 12 amps or so, rather like the way supercharging starts slowly when a battery is cold. I don't think I have ever seen level 2 charging ramp up like this. Of course, if it does, I normally charge in the wee hours and would not see the ramping up. Plus the weather is rarely this cold here.
Now that it has been charging for 15 minutes or so, the charge rate is up to normal (40 amps, 9 kW).
I left home December 10th and wont be back until January 10th, both MS and MX plugged and set to charge every day at 10:05PM... I have been checking the app daily and both cars are holding charge very well, so far both have charged every other day (give or take) up to the set charge.
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Tam
Well-Known Member
I am not a cold weather expert but I believe the drastic drop on range after you stop driving is due to calculation revision because there is more range in warm while driving battery and less range in cold while parking battery.
That. It will revise the range downward based on the cold. The range will 'come back' when the battery warms back up. No need to hover like this - if you had scheduled the charging and come back in the morning, you would have never known there was anything that happened at all. If it makes you happy to know, go for it. Otherwise I'd suggest not looking.
islandbayy
Active Member
Just thought i'd chime in here. I'm experiencing accelerated battery drain as well on the new 50.2 firmware. Parked at Costco, had 40 miles range. We were in Costco for 1 hour. Came out to 0 remaining miles. Granted, it was cold, but parked, still should not have lost that much. 15*F outside. I've parked in colder for much longer as recent as last week, with no range loss like this.
I'm seeing a 20+ mile loss/night as well. Ironically, my warranty expired a week ago as well.....
40 miles, battery was fully heated and had full regen when parked. still had some regen when we went out to the car. only 10 miles from home so should have had plenty. limped to a CHAdeMO Station 2 miles away from costco and charged for about a half hour. Charge reate was quick, at around 30kW (Low SOC). Charged until I had 50 miles rated and headed home.
Overheat/freeze protection turned off, energy saver is on, always connected is on as well, but never had a issue with that, smart preconditioning is off,
I'm seeing a 20+ mile loss/night as well. Ironically, my warranty expired a week ago as well.....
40 miles, battery was fully heated and had full regen when parked. still had some regen when we went out to the car. only 10 miles from home so should have had plenty. limped to a CHAdeMO Station 2 miles away from costco and charged for about a half hour. Charge reate was quick, at around 30kW (Low SOC). Charged until I had 50 miles rated and headed home.
Overheat/freeze protection turned off, energy saver is on, always connected is on as well, but never had a issue with that, smart preconditioning is off,
EV-lutioin
Active Member
That seems like a flaw, Smart Preconditioning should notice if you are not using the car, it should go into weekend mode. Similar to Nest.
Couldn't have been any of the air conditioning features, since they are disabled if your battery is below 20%. Unless there's a really weird bug. Even if you left a door slightly ajar it shouldn't have burned that much with just the heat, either. Any chance it's been a long time since you charged to 100%? Some folks have reported that low charge level measurements get really inaccurate if they don't charge to 100% and run close to 0% from time to time, since it's all based on estimates.
Did you happen to check the app to see if some of the 40 miles were locked away in the blue "snowflake" portion of the battery?
As far as warranty, your car isn't 8 years old yet is it? So the battery should still be covered.
Akikiki
A'-Lo-HA ! y'all
How is that done, please? Check the app to see if miles are locked away in the blue portion of the battery.
Akikiki
A'-Lo-HA ! y'all
Electric700
Active Member
Good advice, though I'd make sure Always connected is unchecked too. Cabin Overheat Protection can remain on since it will automatically deactivate 12 hours after parking (so during subsequent days while continuously parked, no additional energy will be used because of the feature). Also during the first 12 hours, it should only minimally decrease the overall range remaining and only if it gets about 104 F inside the car. The overall range impact may be 1 - 10 miles.
SucreTease
Teslarian
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