woolif

I am an new owner of a 97 LS 400. No owners manual and had a few questions. One what is the switch labeled ECT Norm/power on the console and what does it do. Two does this car have brake pad sensors as I have read here that others Lexus's do? Can I improve road noise by changing from present tire (Michelin P235/60 R16 97V M+S) to something different. I haven't been impressed with road noise so far Thanks