During the past 2-3 weeks I've noticed there are occasions when I can't adjust the audio volume using the on/off **** to the radio - nothing happens. I have to use the steering wheel control. It doesn't happen enough to motivate me to take it to the dealer, and it probably wouldn't manifest itself there anyway (Murphy at work).
Have any of you had the same experience, and if so did it get resolved, and how?
Thanks for your input.

2007 GS350 - 21,000 miles