Environmental conditions

  • Say the commands, numbers, and letters smoothly and with normal volume, emphasis, and speed.
  • Always say commands in the language of the voice activation system.
  • When selecting a radio station, use the common pronunciation of the station name.
  • Keep the doors, windows, and glass sunroof* closed to prevent noise interference.
  • Avoid making other noise in the vehicle while speaking.
    See also:

    Avoiding unintentional alarms
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    General driving notes
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    The Appendage Factor
    M cars have had what I call a high appendage factor — the feeling that the car is an extension of the driver. It's typically experienced in cars whose various systems and characteristics are well- ...