jmesf

Hope I'm posting in the right place. I just bought a ceritifed pre-owned 2010 RX 450h. I love it, but a couple of questions as I get to know the car. 1) The rain sensor seems to not work. I set the wipers to what on another car would be "intermittent" but the wipers never come on. Am I missing something, am I a dummy? Or should I just get the dealer to replace the sensor? 2) Any way to turn off the seatbelt warning chime? Thanks for any help!