Sitting in your driver seat, look up to the overhead console. There is a 'dummy' button, and next to it one with a 'P' or something like that. Press to create blissful silence. Pity it turns off the lights; kind of like those.

I have substantially muffled my noisemakers (there are a couple - the park sensor has it's own) in the dash, so they are all far less annoying now.