I have a alpine cda-9886. When I start the car the radio turns on normally, but once I start driving the volume goes up automatically.
I check all setting. I dont know if it has some sort of speed volume control?? that i may not know of. The only way the volume does not go up is when I hit the mute button on the side controls and turn up the volume on the radio dial. Any help on this?

 

If you have an aftermarket headunit and your dash controls function, it means you have
an aftermarket dash control interface (DCI) as well, almost certainly a Modifry DCI which
does have a speed-controlled volume option. Here's a link to the manual which will tell
you how to change the settings.

 

Thanks for the info! I messed with it this past weekend and got it adjusted.