I have 2003 type s w/o nav... ever drive with the radio off and hear a lot of cabin noise? (almost like the seats are creaking). Very annoying but I was told to pay attention to the moonroof. If you close the inner sun shield or open the moonroof the noise dissapears. You can test this by pressing up on your moonroof's glass. Does anyone know of a fix for this? I usually drive with the sun guard open but want the moonroof closed so I can keep the AC in. Also I am now regretting that I didn't take the NAV option! Does anyone know how I can go about getting one for my TL?