Hello. I have just bought a 406 diesel 110 on a 02 plate. Lovely car but I need 2 month course on what everything does. For example when I switch on, the air con light comes on, so I switch it off, is this right or should I leave it alone, can't find anything in the Manuel about it. The sat nav is a bit of a disappointment having used a Tom Tom Go for a few years, I find the directions a bit hit and miss, I bought a new disc ( £94.00 ) but not much improvement. But generally speaking, the car is great. Fuel consumption is amazing, done 3 tank tests 38, 41, and 39, I would never have believed it. If someone could advise about the air con I would be grateful. Thank you Bryan ( Winchester UK )