radar detector that is very annoying? This car has a factory built in radar detector. what i would like to know is, if someone eles has this model of lexus with a built in radar detector, and if so, how do i turn it off, it is very annoying because it makes churp sounds whenever it detects a radar. I understand that this is the way a radar detector works its just that i cant see driving around all the time with that noise. I looked in the manual and i didn' t see anything about a radar detector in it. PlEASE HELP!!