Various Modes; Silent Mode - Viper 3305V Owner's Manual

Security only
The dome light activates for 30 - seconds after the system is disarmed.
Ignition controlled
The dome light activates for 30 - seconds after the ignition is turned
Off. (may be programed to On or Off, by the dealer installer)

Silent mode

To temporarily turn off the arm or disarm chirps, use Silent Mode™.
Press AUX for less than one second before arming or disarming, and
the confirmation chirp(s) will be eliminated for that one op er a tion only.
If you want the arm/disarm chirps turned off permanently, your dealer
can do this for you.
The Warn Away response to lighter impacts is bypassed if the system
is armed using Silent Mode. This ensures that no chirps will be emitted
by the siren in an area you want chirp-free. The system is still capable
of triggering, but the Warn Away® response is bypassed.
The LCD remote responds with the normal arm/disarm notifications in
silent mode. If the remote has beeps programmed On, it will beep.
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