If it's a standard Grundig model, then pressing exp, and scrolling through
the menus to the appropriate item - can't remember which one, too late to go
out now !.  Once found press exp again and the setting will have taken
place.  .........Upon reflection I think 'ign' is the setting you want - to
turn off with ignition.

Have a play - you can always change the settings back again !

Graham

When you say you can't switch it off I assume you mean you've PRESSED
the volume control and it doesn't turn it off. Don't take offence - I'm
assuming you've just got the car and don't have the instruction book.

Another Dave