Presence of a key
Your Tesla knows when a key is present. That’s why it can automatically lock the doors whenever you get out of the car and walk away.
Enable or disable auto-lock
- Tesla Model S/X: go to Controls >Vehicle > Walk-Away Door Lock.
- Tesla Model 3: touch Controls > Locks > Walk-Away Door Lock.
Note: the car will not lock when a door or trunk is not fully closed.