Did you inspect the cable for corrosion? What setting is your HVAC set to? I have the original cable and haven't had any issues.
As far as the volume, there is a setting to reset the volume to a specific value on startup. Mine is set to 10, that way I don't start the car and blow my eardrums out at 5am lol maybe check what yours is set to?
As far as the volume, there is a setting to reset the volume to a specific value on startup. Mine is set to 10, that way I don't start the car and blow my eardrums out at 5am lol maybe check what yours is set to?