TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Remote start to warm battery?

Discussion in 'Model S: Battery & Charging' started by salvatorej, Nov 9, 2014.

  1. salvatorej

    salvatorej Member

    Joined:
    May 3, 2014
    Messages:
    14
    Location:
    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
     
  2. salvatorej

    salvatorej Member

    Joined:
    May 3, 2014
    Messages:
    14
    Location:
    NJ
    Well, I just realized that remote start only lasts for two minutes without hitting the brakes. Never mind.
     
  3. stevezzzz

    stevezzzz R;SigS;P85D;SigX

    Joined:
    Nov 13, 2009
    Messages:
    6,062
    Location:
    Colorado
    #3 stevezzzz, Nov 9, 2014
    Last edited: Nov 9, 2014
    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.
     
  4. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,756
    Location:
    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.)
     
  5. stevezzzz

    stevezzzz R;SigS;P85D;SigX

    Joined:
    Nov 13, 2009
    Messages:
    6,062
    Location:
    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.
     
  6. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,756
    Location:
    Texas
    Right. That's why you heat it up to warmer than you normally would.
     
  7. Brass Guy

    Brass Guy Member

    Joined:
    Jan 5, 2014
    Messages:
    505
    Location:
    Stoughton, 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.
     
  8. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,756
    Location:
    Texas
    It does, but it works slower--sometimes much slower. My wish is that range mode would be disabled whenever the car is plugged in.
     
  9. rapoport3a

    rapoport3a Member

    Joined:
    Apr 30, 2014
    Messages:
    320
    Location:
    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.
     
  10. Cottonwood

    Cottonwood Roadster#433, Model S#S37

    Joined:
    Feb 27, 2009
    Messages:
    5,062
    Location:
    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.
     
  11. AmpedRealtor

    AmpedRealtor Active Member

    Joined:
    Jun 30, 2013
    Messages:
    4,704
    Location:
    Buckeye, 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.
     
  12. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,756
    Location:
    Texas
    +1 That would be great.
     
  13. ghost640

    ghost640 Member

    Joined:
    Apr 11, 2014
    Messages:
    62
    Location:
    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.
     
  14. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

    Joined:
    Mar 8, 2012
    Messages:
    12,756
    Location:
    Texas
    Yes, it would help. Actually, in cold weather warming the battery is just about all the 110V plug can do.
     
  15. AoneOne

    AoneOne Member

    Joined:
    Sep 21, 2013
    Messages:
    151
    Location:
    Fox Chapel (Pittsburgh), PA
    Visible Tesla has a scheduler that might be able to do that.
     
  16. mibaro2

    mibaro2 Member

    Joined:
    Dec 2, 2012
    Messages:
    958
    Location:
    Georgetown, ON
    The problem with Visible Tesla (and correct me if I am wrong) is that the program has to be running to do that. You can't set it, and turn off your computer.

    AoneOne , +1. Wish the app had the same feature.
     
  17. David99

    David99 Active Member

    Joined:
    Jan 31, 2014
    Messages:
    2,054
    Location:
    Brea, Orange County
    At a public meeting in Europe with Elon, someone suggested that and Elon nodded and he said 'I agree'.
     
  18. ghost640

    ghost640 Member

    Joined:
    Apr 11, 2014
    Messages:
    62
    Location:
    Duluth, MN
    Thanks Jerry, that's all I'd want it to do. Like the oil heater in my '82 Mustang...
     
  19. David99

    David99 Active Member

    Joined:
    Jan 31, 2014
    Messages:
    2,054
    Location:
    Brea, Orange County
    Reading through various discussions it seems there doesn't seem to be a way to heat the battery on user demand to a normal level.
     
  20. rdrcrmatt

    rdrcrmatt Member

    Joined:
    Jun 27, 2013
    Messages:
    551
    Location:
    Milwaukee

    THIS!!
     

Share This Page