If you do not lock the 2016 Toyota Camry with the key, it does not turn on the alarm system.
- Why does it not turn on automatically?
- Can I set it up so it will turn on automatically?
According to the owner's manual I found online, once all doors and trunk are closed, then locked, the alarm automatically activates after 30 seconds.
There may not be an external indication of this, other than the indicator on your central console which will go from "solid on" to "flashing," once the system is set.