Hi, new to the forum and the VE. 2 Questions: 1. The on/off volume knob on the unit works ok for volume but doesn't turn off the radio/stereo when pressed in? Only way to turn it off completely is to remove key and exit vehicle. What could this issue be? 2. Is there a way to enter the firmware or engineering mode on this Blaupunkt radio, being an SSV I think it is called a level 3 unit in the handbook. And/or is there a way to factory reset the radio? Any help appreciated.