Just took the wifes 2004 Copen out for my second spin this evening. Only brought it for her yesterday as a weekend funster. It became a little chilly so I thought to turn the heater on but the hot / cold knob was stuck, too much brute force latter and BANG, the knob now turns but no heat. Whipped the radio out and can see the cable being operated so I guess I need to look at the water valve end. Anyone know the location of the valve? Oh, the Copen is rapidly becoming a shared funster by the way!