Suzuki Nexa S-CROSS series 2015 Owner's Manual & Service Booklet page 192

(1) CD button
(1)
64MS193
To listen to auxiliary audio sources (sold
separately) through the unit, follow the
instruction below.
1) Connect the auxiliary audio source to
the AUX/USB socket
attached) with an AUX cable.
2) Press the CD button (1).
Each time the button is pressed, the
mode will change as follows:
CD
®
Bluetooth audio (if equipped)
AUX (if equipped)
(separately