HIGH FREQUENCY NOISE WITH AUDIO SYSTEM DISPLAY ON
IF YOU CONFIRM
There is a high frequency (17 kHz) noise with the audio system display screen turned ON,
NOTE:
 The 17kHz range may not be audible to some people.
 Noise can be heard with the audio system ON or OFF.
AND
The high frequency noise is not heard with the audio system display screen turned OFF.
ACTION
1. Confirm the current Audio Control Unit software version is numerically below software
version 423.
2. Update the Audio Control Unit software version to 423.
