This is my first car with Air Con so I may just be a complete numtpy in using it but if it's switched onto Auto the windows steam up, whilst driving but more so when I've stopped. I'm worried that I may have blocked pipes :frown but is it just me? I've been told I can switch the system to circulate the air and having checked my handbook I see the switch that does this but does this just block bad smells from outside? How is it meant to be operated - light on or off? I hope the good members here can point me in the right direction.