Mazda CX-52017 Owner's Manual page 342

Interior Features
Audio Set [Type A (non-touchscreen)]
Hang-up button
Ends the call or refuses an incoming call. In addition, it ends the voice recognition
operation.
Volume adjustment
The power/volume dial of the audio unit is used to adjust the volume. Turn the dial to the
right to increase volume, to the left to decrease it.
The volume can also be adjusted using the volume button on the steering wheel.
NOTE
If the volume is lower compared to other audio modes, increase the volume from the device
side.
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