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 ...

Inserting and removing the remote key
Ignition slot with remote key and START/STOP ENGINE button. ...

Steering wheel keypad
Standard steering wheel keypad 1 - Left/right arrow keys: A short press moves between preset radio stations or tracks on a disc. Press and hold to search within tracks or to tune to the next/prev ...