Here's something which may shock some of you. On neither of my IS200s, did I ever, even once, open the sunroof. No tilting or opening. I didn't even look at, let alone touch, the switch. Can't even remember where it was! What's the point of opening the sunroof - or - even opening the sunblind, which I never, ever did, when you have a fully functioning climate control system? Someone is bound to come up with an opposing view and I've just nipped down to my local Ladbrookes to put a bet on who I reckon it will be...