[trca]

Even with my phone in Airplane mode (WiFi / Cellular disabled), and only Bluetooth on, I'm still able to get into my Model 3. Internet connection is not required by the car, or the phone, to be able to unlock the car, drive, or operate the frunk / trunk.

[dkonofalski]

It is required if your app hasn't downloaded a new cert. If you're still able to get in via Bluetooth, it's only because the cert on your phone is still valid. Once that cert expires, you'll be locked out.

[lance_t]

Model S and X don't have the same bluetooth antennas to do the proximity triangulation is my understanding and rely on the network connection from Car -> Tesla and App -> Tesla to unlock and start so may be different for S and X drivers?

[xeromal]

Actually the S and X were not affected all by these since they have dedicated key fobs. No internet or bluetooth is involved.