Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

Remote start to warm battery?

salvatorej

Member
May 3, 2014
14
0
NJ
Hello everyone,

I'm beginning to notice how my MS's energy consumption rises in cooler weather, particularly at the beginning of a trip, as the battery gradually warms up and becomes more efficient.


Does starting the car remotely, as opposed to *just* pre-heating the car, warm the battery pack? In other words, if I want the car to have a warm and efficient battery ASAP in cold weather, will pre-starting it be more useful than using the remote app to pre-heat the cabin? Timing the charge so it's active just before driving seems like more of a hassle than just remotely starting the car.


I understood remote start to be a useful feature if you have forgotten or lost your key fob, but if it also serves as a way to warm the battery in a way that climate control heating does not, then that would be good to know.


Thanks
 

stevezzzz

R;SigS;P85D;SigX;S90D;XP100D;3LR;YLR
Nov 13, 2009
6,100
122
Colorado
If you can arrange to turn on the climate control 20-30 minutes ahead and finish charging
just before you unplug, both the battery pack and car interior will be warmed using shore power. It makes a big difference to the energy usage in the first few miles.
 
Last edited:

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,008
24,725
Texas
Like Stevezzzz say, use the App to turn on climate control. Set the heat up to quite high (26C or so). Also set the timer so that the charging ends just before you start to drive. Also it helps if you turn off range mode (from the Settings screen) when you plug in the car. (I wish that you could adjust range mode from the App so that you could turn it off if you forgot.)
 

stevezzzz

R;SigS;P85D;SigX;S90D;XP100D;3LR;YLR
Nov 13, 2009
6,100
122
Colorado
I remember Cottonwood telling us that when range is an issue, after preheating the interior he actually turns off climate control for a while when starting out in cold weather.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,008
24,725
Texas
I remember Cottonwood telling us that when range is an issue, after preheating the interior he actually turns off climate control for a while when starting out in cold weather.

Right. That's why you heat it up to warmer than you normally would.
 

Brass Guy

Active Member
Jan 5, 2014
1,168
968
Holbrook, MA
Ever since release 5.9 (according to the change log) remotely turning on climate control while the car is plugged in preheats the battery. This has worked for me with the recent cooler weather we've been having. I'm not certain, but I may have left the car in ”range mode” and it still worked.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,008
24,725
Texas
Ever since release 5.9 (according to the change log) remotely turning on climate control while the car is plugged in preheats the battery. This has worked for me with the recent cooler weather we've been having. I'm not certain, but I may have left the car in ”range mode” and it still worked.

It does, but it works slower--sometimes much slower. My wish is that range mode would be disabled whenever the car is plugged in.
 

rapoport3a

Member
Apr 30, 2014
372
91
Ontario
I've found that preheating the cabin to 20° (car plugged in but not charging) does almost nothing for the battery. Also, in the cold but not very cold weather, the cabin reaches that fairly quickly and the preheating turns itself off long before 30 minutes, definitely leaving the battery too cold.

In preheating the cabin for battery purposes, to keep the process from shutting off too soon, should the fan be set low?

I'll consider 26° but assume any cabin preheating is superfluous if I can arrange that the car charge its last bit just before driving off.
 

Cottonwood

Roadster#433, Model S#S37
Feb 27, 2009
5,088
173
Colorado
Stevezzzz remembered my tricks well.

By finishing the charge within an hour of departure, and preheating the cabin to 80˚F, 26˚C, during that last hour (you have to turn on the climate control multiple times), I have been able to drive almost 30 minutes with climate control off in the car and use only the seat heaters for the last 15 minutes with outside temps at 30˚F, -1˚C. Starting with a warm cabin and a warm battery heated on shore power are essential for maximizing range when it's cold.

See Realistic Range Expectations in Crummy Winter Weather - Hypermiling in the Winter...Brrr for one of my winter adventures in the Model S last year.
 

AmpedRealtor

Well-Known Member
Jun 30, 2013
6,414
4,097
Phoenix, AZ
I wish the Tesla app would just let us input a "departure time" and adjust everything else appropriately. Pre-heat or pre-cool the car as needed and coordinate charging and whatever else so that the car is just ready to go by the time I set.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,008
24,725
Texas
I wish the Tesla app would just let us input a "departure time" and adjust everything else appropriately. Pre-heat or pre-cool the car as needed and coordinate charging and whatever else so that the car is just ready to go by the time I set.

+1 That would be great.
 

ghost640

Member
Apr 11, 2014
62
0
Duluth, MN
Would plugging into 110V help to warm the battery? (after full charge received). My 220 is only active between 11 PM and 7 AM, but I could plug into a regular outlet, wondering if that would help.
 

jerry33

(S85-3/2/13 traded in) X LR: F2611##-3/27/20
Supporting Member
Mar 8, 2012
20,008
24,725
Texas
Would plugging into 110V help to warm the battery? (after full charge received). My 220 is only active between 11 PM and 7 AM, but I could plug into a regular outlet, wondering if that would help.

Yes, it would help. Actually, in cold weather warming the battery is just about all the 110V plug can do.
 

David99

Active Member
Jan 31, 2014
4,856
7,166
Brea, Orange County
I wish the Tesla app would just let us input a "departure time" and adjust everything else appropriately. Pre-heat or pre-cool the car as needed and coordinate charging and whatever else so that the car is just ready to go by the time I set.

At a public meeting in Europe with Elon, someone suggested that and Elon nodded and he said 'I agree'.
 

Products we're discussing on TMC...

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top