When Sentry Mode detects someone approaching, the hazard lights flash immediately. Can I turn off the light warning and only record?
Not currently. After enabling Sentry Mode, when the vehicle detects a vigilance event, it will automatically start recording, activate the hazard lights, and display "Recording" status on the central control screen to alert people nearby.
This serves two purposes: first, to warn potential wrongdoers and prevent them from further endangering the vehicle; second, to inform surrounding people that the system is recording video, respecting their privacy.