The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits need to be working
If the warning light comes on, there is a brake problem. Have the brake system inspected right away.
Warning
The brake system might not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to a crash. If the light is still on after the vehicle has been pulled off the road and carefully stopped, have the vehicle towed for service.

This light should come on briefly when the ignition is turned to ON. If it does not come on then, have it fixed so it will be ready to warn if there is a problem.
When the ignition is on, the brake system warning light will also come on when the parking brake is set. The light will stay on if the parking brake does not fully release. If it stays on after the parking brake is fully released, it means there is a brake problem.
If the light comes on while driving, carefully pull off the road and stop. The pedal may be harder to push or may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. See Towing the Vehicle.
Service Vehicle Soon Light
Antilock Brake System (ABS) Warning LightDrum Brake Hardware Inspection
Warning: Refer to Brake Dust Warning.
Visually inspect the drum brake upper return spring (1) for the following
conditions:
Excessive corrosion
Excessive stretching
Broken
Missing
If any of the conditions listed were found, the drum brake upper return sp ...
Front, front central seat-mounted side-impact supplemental air bag and roof-mounted
curtain side-impact and rollover supplemental air bag systems
*: if so equipped
In the Nissan Armada, the supplemental side-impact and curtain air bag systems
are engineered to provide enhanced protection for occupants during side collisions
and rollover events. These systems work together with seat belts to form a comprehensive
safety network.
The ...
I-BSI system operation
Example
Side indicator light
I-BSI ON indicator (vehicle information display)
I-BSI indicator (vehicle information display)
ProPILOT Assist switch (design may vary depending on Nissan Armada model)
The Nissan Armada I-BSI system becomes active at speeds above approximately 37
MPH ...