2013 Nissan Altima Owner's Manual - Page 145

NOTE: If you change the answer back horn and light flash feature with the Intelligent Key, the vehicle information display screen will show the current mode after the ignition switch has been cycled from the OFF to the ON position. The vehicle information display screen can also be used to change the answer back horn mode. See "Answer back horn" in the "Instruments and controls" section. To deactivate: Press and hold the and buttons for at least 2 seconds. WPD0361 WPD0362 Using the panic alarm If you are near your vehicle and feel threatened, you may activate the panic alarm to call attention button on the by pressing and holding the Intelligent Key for longer than 0.5 seconds. The panic alarm and headlights will stay on for a period of time. The panic alarm stops when: ● It has run for a period of time, or ● Any button is pressed on the Intelligent Key. Answer back horn feature If desired, the answer back horn feature can be deactivated using the Intelligent Key. When debutton is activated and the LOCK pushed the hazard indicator flashes twice and button is pushed, neiwhen the UNLOCK ther the hazard indicator nor the horn operates. The hazard warning lights will flash 3 times to confirm that the answer back horn feature has been deactivated. To activate: Press and hold the and buttons for at least 2 seconds once more. The hazard warning lights will flash once and the horn will sound once to confirm that the horn beep feature has been reactivated. Deactivating the horn beep feature does not silence the horn if the alarm is triggered. 3-22 Pre-driving checks and adjustments