Before starting
To get the best recognition performance from Voice Recognition, observe the following:
● The interior of the vehicle should be as quiet as possible. Close the windows to eliminate the surrounding noises (traffic noise and vibration sounds, etc.), which may prevent the system from correctly recognizing the voice commands.
● Wait until the tone sounds before speaking a command.
● Speak in a natural conversational voice without pausing between words.
● If the air conditioner is set to “Auto”, the fan speed is automatically lowered so that your commands can be recognized more easily.

See also:
Auto-reverse function (when closing or
tilting down the moonroof)
The auto-reverse function can be activated when
the moonroof is closed or tilted down by automatic
operation when the ignition switch is
placed in the ON position or for about 45 seconds
after the ...
2010 Nissan Altima review
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RearView Monitor (if so equipped)
When the shift selector is shifted into the R
(Reverse) position, the monitor display shows a
rearward view from the vehicle.
● The system is designed as an aid to the
driver in detec ...
