When volume control is turned, volume either doesn't change or reacts the opposite of direction turned.

For example, if the volume control is turned clockwise ("up"), the indicator may go up one or two numbers then back down again, and the volume may not change. Usually requires multiple tries, some slower, some faster, to get it to work.

This problem occurred a year or so ago, the entire stereo unit was replaced then, but has recurred again with the replacement stereo.

Fortunately we paid for the extended warranty with terms that cover the electronics...