Brake system

The brake system has two separate hydraulic circuits. If one circuit malfunctions, you will still have braking at 2 wheels.

See also:

Draining of coolant water
If the vehicle is to be left outside without antifreeze, drain the cooling system, including the engine block. Refill before operating the vehicle. For details, see “Changing engine coolant” ...

Keys
1. Two Intelligent Keys 2. Mechanical keys (inside Intelligent Keys) 3. Key number plate ...

Nissan Intelligent Key™ door buzzer (if so equipped)
The Intelligent Key door buzzer sounds if any one of the following improper operations is found. ● The ignition switch is not returned to the LOCK position when locking the doors. ● ...