Help - Climate Control Problem

Hi,

I have a 2005 1.9L TDI A4 B7 S-line and hopefully someone can help me with it. My problem is with the climate control. I could have both sides set at a low temp (17-18DegC) and its giving out hot air on both sides. If the passenger side is set hi and the driver side is set on a low temp, say 20-21DegC, it sometimes gives out hotter air than the passenger side is. It seems to have a mind of its own. Brought it back to the dealers and of course they couldn't find anything wrong with it. Any ideas what could be causing this?

Also if I drive on a rough enough surface the is a slight clunking noise coming from the front left hand side of the car....is this the suspension and what would cause this?

Thanks.....:1zhelp: