How to use phone as key with Model 3

Authenticated phone – You can set up your personal
smartphone to communicate with Model 3 using
Bluetooth. Supports automatic locking and
unlocking as well as several other functions using the
Tesla mobile app

Using your phone is a convenient way to access your
Model 3. As you approach, your phone’s Bluetooth
signal is detected and doors unlock when you press a
door handle. Likewise, when you exit and walk away
with the phone, doors automatically lock (provided the
Walk-Away Door Lock feature is turned on).
Before you can use a phone to access Model 3, follow
these steps to authenticate it:

  1. Download the Tesla mobile app to your phone.
  2. Log into the Tesla mobile app using your Tesla
    Account user name and password.
    NOTE: You must remain logged in to your Tesla
    Account to use your phone to access Model 3.
  3. Ensure that your phone’s Bluetooth settings are
    turned on.

You must have your phone’s Bluetooth setting
turned on AND you must also ensure that Bluetooth
is turned on within your phone’s global settings for
the Tesla mobile app. For example, on your phone,
navigate to Settings, choose the Tesla mobile app,
and ensure the Bluetooth setting is enabled.

NOTE: Model 3 communicates with your phone
using Bluetooth. To authenticate your phone or use
it as a key, the phone must be powered on and
Bluetooth must be enabled. Keep in mind that your
phone must have enough battery power to run
Bluetooth and that many phones disable Bluetooth
when the battery is low.

  1. Ensure that Allow Mobile Access (Controls > Safety
    & Security > Allow Mobile Access) is enabled.
  2. In the Tesla mobile app, touch PHONE KEY then
    touch START to search for your Model 3.
    When your Model 3 is detected, the mobile app asks
    you to tap your key card.
  3. Tap the key card against the Model 3 card reader on
    the door pillar or center console.

When Model 3 detects your key card, the mobile app
confirms that your phone has been successfully
authenticated. Touch DONE.

If the key card is not successfully scanned within
approximately two minutes, the mobile app displays an
error message. Touch PHONE KEY on the app again to
retry.

To view a list of keys that can currently access Model 3,
or to remove a phone, touch Controls > Locks (see
Managing Keys on page 11).

NOTE: Authenticating your phone allows you to use it
as a key to access Model 3. To use the phone handsfree, access your phone’s contacts, play media from it,
etc., you must also pair and connect to it using the
Bluetooth settings.

NOTE: Model 3 can connect to three phones
simultaneously. Therefore, if more than one phone is
detected and you want to use, or authenticate, a
different phone, move the other connected phone(s)
out of range or turn off its Bluetooth setting.

NOTE: Unlike the mobile app, once a phone has been
authenticated, it no longer requires an internet
connection to communicate with Model 3.
Authenticated phones communicate with Model 3 using
Bluetooth.

NOTE: Although Bluetooth typically communicates over
distances of up to approximately 30 feet (9 meters),
performance can vary based on the phone you are
using, environmental interference, etc.

NOTE: If multiple vehicles are linked to the Tesla
Account, you must switch the mobile app to the vehicle
that you want to access before you can use the phone as
a key.

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Larry Iwanaga
2 months ago

If I have authenticated my phone on one key card and my phone breaks or I have to change phones, can I re-use the key card on my new phone?