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12 V battery question - by a newbie

Discussion in 'Model S: Battery & Charging' started by rogbmw, Feb 11, 2013.

  1. rogbmw

    rogbmw Member

    Feb 10, 2012
    Central Florida
    Hi all. This forum is great for information - and here is my first questions since receiving the car on Saturday. I am going to drive our other car until it is sold most of the time. Saturday night I charged the S and have not driven it since. Having read on the forum about the 12 volt battery discharging, and since my car if fully charged, do I need to plug it in at night? Would this help keep the 12 volt battery fully charged?

    Also, how do I turn off all the stuff on the inside so it only wakes up when I get into the car, or is this recommended? I read somewhere about a "sleep" mode, but does this mean that the items still stay on and draw power?

    Thanks in advance for any input.
  2. steve841

    steve841 Active Member

    Jan 17, 2010
    Ft. Lauderdale, FL
    Tesla suggests plugging in whenever not in use.
    12V should be fine since it appears they've got the kinks worked out with the firmware.
    No sleep mode since 4.1 .... due for a return in the future. Although I had no issues with sleep mode, others did.

    At this point, enjoy the new ride. Dont know how you could avoid driving it over the old ride! WILL POWER!
  3. Larry Chanin

    Larry Chanin Model S Perf Sig 1055

    Aug 22, 2011
    Sarasota, Florida
    Hi Roger,

    Steve addressed most of your questions. With regard to turning off accesories, radio, climate control, etc., there is nothing you need to do other than get out of the car. As Steve points out if you have the most current software, there is no sleep mode so the car will draw a bit of power. Later Tesla will release a software update that will restore the option to turn on sleep mode.


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