HI there,
I would need to know what you have for options on your vehicle.
Please remember that your CD/aux button will create a change if you have a CD in the radio, from the radio itself.
As if you have a rear Cd changer, this will send a communications signal to the rear changer.
Unfortunately, it is not just an on and off switch.
Please let us know what you would like to do, c4c5
