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Is any of the USB port on the Model 3 always on?

Discussion in 'Model 3' started by YauKwan, Jun 26, 2018.

  1. YauKwan

    YauKwan Member

    Joined:
    Nov 14, 2016
    Messages:
    267
    Location:
    New Jersey
    Need to keep a mifi on 24/7 for the car's dashcam.

    Was going to hardwire an inverter to the frunk and keep the mifi there, but before i do that are any of the usb ports in the car always on? Are or there any way to keep them always on?

    Thanks
     
  2. guri

    guri Member

    Joined:
    May 29, 2018
    Messages:
    8
    Location:
    Vancouver
    No they turn off when the car turns off. Check some YouTube videos about dash cam installs for Model 3, I think people are tapping into the 12 volt battery for it.
     
  3. eSpiritIV

    eSpiritIV Member

    Joined:
    Mar 24, 2016
    Messages:
    421
    Location:
    Portland, OR
    Im interested in hearing the result of this. I have a dashcam in my current car, and havnt taken delivery of my M3 yet. Is it easy to get to the 12V battery from the interior?
     
  4. JPP

    JPP Active Member

    Joined:
    Feb 4, 2013
    Messages:
    2,447
    Location:
    SF Bay Area, CA
    Be careful about directly tapping into the 12V battery-there are reports that the Model 3 electrical system does not like any accessories pulling power that way and that this somehow triggers a bunch of faults, and sometimes kills the 12V battery. Search these forums (mostly related to dash cam installs). Many folks have had to resort to an independent Li-ion battery pack to maintain power, and hook it up to the 12V accessory (cigarette lighter) outlet circuit in the center console.
     
    • Informative x 1

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