Nissan Qashqai e-POWER 2023 Owners Manual
5.2.4.6. Key reminder buzzer (Intelligent Key models)
The external buzzer will beep 3 times if:
The Intelligent Key is removed from the vehicle while the power switch is not switched to LOCK.
The vehicle is being locked remotely or using an outside door lock switch and the Intelligent Key has been left inside the vehicle.
Owners Manual