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Security Alarm

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About the Security System​

If Model 3 does not detect an authenticated phone, key fob, or key card and a locked door or trunk is opened, an alarm sounds. The headlights and turn signals also flash. To deactivate the alarm, press any button on the mobile app or tap your key card or key fob against the card reader located just below the Autopilot camera on the driver's side door pillar.
To manually enable or disable the alarm system, touch Controls > Safety > Security Alarm. When enabled, Model 3 activates its alarm one minute after you exit, the doors lock, and a recognized key is no longer detected.
A battery-backed siren (if equipped) sounds in situations where a locked door or trunk is opened and Model 3 does not detect a key nearby.

If you want Sentry Mode to automatically turn on every time you leave your vehicle, touch Controls > Sentry Mode > On. There are three additional settings for customization:

  • Exclude Home: Sentry Mode does not operate at the location you set as Home in your favorites list (see Home, Work, and Favorite Destinations), but operates at any other parking location.
    Note
    To set up your Home location, touch Navigate and hold down Home, then enter your address. Touch Save as Home.
  • Exclude Work: Sentry Mode does not operate at the location you set as Work in your Favorites list, but operates at any other parking location. Set your Work location the same way you set your Home location.
  • Exclude Favorites: Sentry Mode does not operate at any location in your Favorites list, but activates at any other parking location.

To recognize a location listed as Home, Work, or a Favorite, Model 3 must be parked within 32 feet (10 meters) of the saved location.