Delay in Battery Heating message

ElectricAvenue · Nov 5, 2013

I have found that at about 30degrees F my Modeel S takes about 5 mins of driving for the "Battery is Heating" message to appear.
I would think the car would want to heat the battery as soon as I started driving.
Why is this?

The car is plugged in just before I leave so I am unable to tell if the battery is preheated before I start, I would think not because this would be a waste of energy.

Al Sherman · Nov 5, 2013

Wow. 8 months and 6000 miles and I've never even seen the message. Interested in the discussion!

Cottonwood · Nov 5, 2013

Al Sherman said:
Wow. 8 months and 6000 miles and I've never even seen the message. Interested in the discussion!

I have had a lot of cold starts, and never saw this message until 5.6

I agree that it does not come on for several minutes. What I have seen is the the heater does not come on until the car thinks you are serious about driving (moving a tenth of mile or so). I assume this is to preserve charge. When the heater kicks in, it is serious. I have seen 10 kW or so used, and that use starts well before the message comes up.

Todd Burch · Nov 5, 2013

Cottonwood said:
I have had a lot of cold starts, and never saw this message until 5.6

I agree that it does not come on for several minutes. What I have seen is the the heater does not come on until the car thinks you are serious about driving (moving a tenth of mile or so). I assume this is to preserve charge. When the heater kicks in, it is serious. I have seen 10 kW or so used, and that use starts well before the message comes up.

Makes sense to me...if you're just moving the car from the garage to the driveway (as I often do since my kids can't get in when the car's in the garage), you wouldn't want to be burning electrons.

Al Sherman · Nov 5, 2013

Cottonwood said:
I have had a lot of cold starts, and never saw this message until 5.6

So, is this feature just in 5.6? Maybe that's why I haven't seen it.
Why would we want to know this? Is it just so we understand the increased energy consumption?

Chris · Nov 5, 2013

Al Sherman said:
So, is this feature just in 5.6? Maybe that's why I haven't seen it.
Why would we want to know this? Is it just so we understand the increased energy consumption?

I also got the message this morning for the first time this season (temp in the 30s here) but I am still on 4.5

Cottonwood · Nov 5, 2013

Chris said:
I also got the message this morning for the first time this season (temp in the 30s here) but I am still on 4.5

Well, the last time I did cold starts was 7 or 8 months ago, and I did not get this message. Who knows what version I was running then, but I bet it was before 4.5...

brianman · Nov 5, 2013

Never seen this message.

qwk · Nov 5, 2013

Al Sherman said:
So, is this feature just in 5.6? Maybe that's why I haven't seen it.
Why would we want to know this? Is it just so we understand the increased energy consumption?

The last build of 4.5(.61) has this feature.

mknox · Nov 5, 2013

ElectricAvenue said:
I have found that at about 30degrees F my Modeel S takes about 5 mins of driving for the "Battery is Heating" message to appear.

Interesting. I have never seen any messages regarding the battery heating (or anything else to do with the battery, for that matter) from the car.

ElectricAvenue · Nov 5, 2013

Hi have version 4.5 and have seen this message every morning for the last couple of weeks. I do leave the vehicle on the driveway and not in a garage.

Jeeps17 · Nov 5, 2013

I have also never seen this message (on 5.6 for about a week now), with numerous cold starts since late October.

cinergi · Nov 5, 2013

This message has been around for a while.

Winter Driving Experiences - Page 32

mknox · Nov 5, 2013

cinergi said:
This message has been around for a while.

Winter Driving Experiences - Page 32

Very odd. I've parked for hours (and overnight) in sub-freezing temps and have yet to see it. I do get pretty severe regen limitation that seems to take a lot longer to "clear" than I recall last winter.

cinergi · Nov 6, 2013

mknox said:
Very odd. I've parked for hours (and overnight) in sub-freezing temps and have yet to see it. I do get pretty severe regen limitation that seems to take a lot longer to "clear" than I recall last winter.

I've seen it once this season. It was maybe 24F outside that night. And definitely agree it takes a lot longer for regen limit to disappear than it did last season. :-(

AnitaToronto · Nov 12, 2013

I just got this for the first time today after parking outside all day. I am on 4.5. It did not turn off by the time I got home, about 15km. I also noticed there was significantly less power as I could not comfortably get up to speed on the highway. Is this normal???

mitch672 · Nov 12, 2013

AnitaToronto said:
I just got this for the first time today after parking outside all day. I am on 4.5. It did not turn off by the time I got home, about 15km. I also noticed there was significantly less power as I could not comfortably get up to speed on the highway. Is this normal???

Yes. I just saw the message leaving work tonight, temp showed as 33F, as soon as I turned the heat on, the message came up. It actually displays "Battery is heating, power will improve as you drive" I am still on 4.5

Mitch

rlang59 · Nov 13, 2013

mknox said:
Very odd. I've parked for hours (and overnight) in sub-freezing temps and have yet to see it. I do get pretty severe regen limitation that seems to take a lot longer to "clear" than I recall last winter.

Yesterday it took almost my entire 30 mile drive home for the regn limit to clear.

mknox · Nov 13, 2013

rlang59 said:
Yesterday it took almost my entire 30 mile drive home for the regn limit to clear.

Me too. It was about 28 F when I left and the re-gen limit was at about 5 kW. This means I essentially had no re-gen because my car never gets up to the yellow dashed line under re-gen anyway. It always stops about 5 kW short of the line. I have about a 45 mile / 1 hour drive, mostly freeway. It got up to about the 30 kW limit when I got home. I've still yet to see this so-called message on the dash. I don't object to Tesla implementing this to protect the battery, but it seems a lot more severe than last winter.

mnx · Nov 13, 2013

mknox said:
Me too. It was about 28 F when I left and the re-gen limit was at about 5 kW. This means I essentially had no re-gen because my car never gets up to the yellow dashed line under re-gen anyway. It always stops about 5 kW short of the line. I have about a 45 mile / 1 hour drive, mostly freeway. It got up to about the 30 kW limit when I got home. I've still yet to see this so-called message on the dash. I don't object to Tesla implementing this to protect the battery, but it seems a lot more severe than last winter.

Maybe you'll have to start plugging in at work again, and set a charge timer for 30mins before the end of your day or something.

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