See also:

Operating Tips for Audio System
WARNING: Do not adjust the audio control switches while driving the vehicle: Adjusting the audio while driving the vehicle is dangerous as it could distract your attention from the vehicle opera ...

Other about Mazda 6
      ...

Accessory Sockets
The ignition switch must be in the ACC or ON position. Only use genuine Mazda accessories or the equivalent requiring no greater than 120 W (DC 12 V, 10 A). The accessory socket is in the center ...