Audio system button does not work (without navigation)

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
In order to troubleshoot the POWER button, go to AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) TROUBLESHOOTING .

Go to the audio button, knob, and audio remote switch detection mode in the audio Self-Diagnostic Function (see HOW TO CHECK THE AUDIO SYSTEM CONDITION ). Operate all items in the switch list.

Button Name
Preset buttons (1-6)	CLOCK button
TITLE button	RETURN button
Disc eject button	PHONE button
AM button	DISPLAY button
FM button	SET UP button
AM/FM button	CATEGORY + button
XM button	CATEGORY - button
CD/CD-L button	Day/Night button
USB/AUX button	Volume knob (right turn)
CD/AUX button	Volume knob (left turn)
CD button	TUNE knob (right turn)
CD-L button	TUNE knob (left turn)
AUX button	SELECT button
DVD button	LIST button
DVD play/stop button	(SOUND) button
REAR POWER button	ALBUM/FOLDER + button
REAR SOURCE button	ALBUM/FOLDER - button
DVD eject button	FOLDER + button
SKIP \|→→ button	FOLDER - button
SKIP \|←← button	RPT button
SCAN button	RDM/A.SEL button

Are all the items in the switch list detected?

YES -Operation is normal.

NO -Substitute a known-good center panel (see AUDIO SWITCH PANEL REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original center panel (see AUDIO SWITCH PANEL REMOVAL/INSTALLATION ). If the symptom/indication is still present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).