This vehicle has a passive theft-deterrent system.
The system does not have to be manually armed or disarmed.
The vehicle is automatically immobilized when the key is removed from the ignition.
The system is automatically disarmed when the vehicle is started with the correct key. The key uses a transponder that matches an immobilizer control unit in the vehicle and automatically disarms the system. Only an authorized key starts the vehicle. The vehicle may not start if the key is damaged.

The security light in the instrument cluster comes on if there is a problem with arming or disarming the theft-deterrent system.
When trying to start the vehicle, the security light comes on briefly when the ignition is turned on.
If the engine does not start and the security light stays on, there is a problem with the system. Turn the ignition off and try again.
If the engine still does not start, and the key appears to be undamaged or the light continues to stay on, try another ignition key. If the engine does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be damaged. See your dealer who can service the theft-deterrent system and have a new key made.
Do not leave the key or device that disarms or deactivates the theft-deterrent system in the vehicle.
How to Detect a Tamper Condition
Exterior MirrorsForward Collision Alert (FCA) System
For vehicles with FCA, this system is intended to help avoid or reduce the harm
caused by front-end crashes. FCA provides a flashing visual alert and beeps when
approaching a vehicle directly ahead too quickly. FCA also provides a visual alert
if following another vehicle much too closely. The ...
Storing an SiriusXM Channel
Drivers are encouraged to set up XM channel favorites while the vehicle is not
moving. Tune to favorite stations using the pushbuttons, favorites button, and steering
wheel controls. See Defensive Driving.
A maximum of 36 stations can be programmed as favorites using the six pushbuttons
posit ...
Hill Start Assist system
WARNING
Never depend solely on the Hill Start Assist system in the Nissan Armada
to prevent rollback when starting on an incline. Always remain attentive and
keep full control of the vehicle. When stopped on a steep hill, firmly press
the brake pedal. Extra caution is required on icy, m ...