Audio System Symptom Troubleshooting Index

Symptom
Diagnostic Procedure
Also Check for
Poor AM or FM radio reception or interference
Aftermarket FM modulator
Loose antenna mounting nut
Excessive transition between analog broadcast and digital HD Radio(TM) broadcast
Receiver is located near the edge of the digital HD Radio(TM) coverage area. Refer to www.hdradio.com to verify radio stations in your coverage area
 
HD Radio(TM) changes HD channel on its own
This is intended behavior. HD Radio(TM) is set to revert to main channel after extended loss of HD2/HD3 broadcast
 
AM radio reception changes at night
This is a system characteristic. AM radio stations are required by the government (FCC) to lower their power at night
 
Audio unit will not turn on (No information display and no sound)
 
No sound is heard from all the speakers (display is normal)
Aftermarket amplifier or speakers
Audio system sound is weak or distorted (display is normal)
Fader and balance positions
File recording level
Aftermarket amplifier or speakers
Radio preset memory is lost
Without navigation: Replace the audio unit
Internal error
Audio unit button does not work
Check the connector for poor connections or loose terminals between the audio unit and the audio panel
Audio touch panel does not work
 
Volume does not increase with speed
Speed-sensitive Volume Control settings (see the Owner's Manual)
Volume is too high or too low when driving at freeway speeds
 
Speed-sensitive Volume Control settings (see the Owner's Manual)
Audio remote switch does not work properly (audio-navigation unit buttons work)
 
Audio remote switch does not work properly (audio unit buttons work)
 
USB device does not function
USB device compatibility (see the Owner's Manual)
Bluetooth audio does not work
 
Bluetooth phone compatibility (see the Owner's Manual)
Rearview camera image does not come on
 
Rearview camera image does not change when selecting different views
 
LaneWatch camera image does not come on
With navigation: Navigation DTCs
Without navigation: Audio DTCs
Audio unit button illumination does not work
 
XM radio display is blank and no station information is displayed
With navigation: Navigation DTCs
Without navigation: Audio DTCs
XM radio account activation status
System always comes up in-line diagnostic mode (without navigation)
 
Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position (no GPS reception)
 
The GPS signal is received by the smartphone. Depending on where the smartphone is placed, the accurate vehicle position may not be displayed on the display
Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position (while going through a tunnel)
The vehicle position accuracy on the audio display depends on the GPS receiver in the smartphone, and the vehicle signals from the F-CAN and B-CAN