Parts, Accessories, and
Modifications
Use only genuine Tesla parts and accessories.
Tesla performs rigorous testing on parts to
ensure their suitability, safety, and reliability.
Purchase these parts from Tesla, where they
are professionally installed and where you can
receive expert advic
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 and the
headlights and turn signals flash. To deactivate
the alarm, press any button on the mobile app
or tap your key card or key fob against