There is a visual and audible indicator to let you know when your Lexus IS low on air. The warning light will turn on in the instrument cluster and the car will make a beeping noise when air is low. If you’re driving outside of the North Andover, Peabody, and Danvers areas, you can check your tires by turning on the headlights and looking for the distinctiverings around the edge of each tire. When inflating your tires, use only the recommended compressor these days they tend to have much less static electric discharge than older models.