See also:

External audio source volume
If an external devices such as an MP3 player or an iPod is connected to the AUX socket, the device's volume may be different from the volume of the internal sound sources such as the disc play ...

Volvo Sensus
Center console control panel 1 - Volvo Navigation System (VNS)* – NAV: see the separate VNS manual for operating instructions. 2 - Infotainment (RADIO, MEDIA, TEL*): see the infotainment system ...

Reverse
The vehicle must be stationary when position R is selected. ...