2008 Lexus IS F Owners Manual - Page 401

5-2. Steps to take in an emergency Warning light Warning light/Details Tire pressure warning light When the light comes on: Low tire inflation pressure Correction procedure Adjust the tire inflation pressure. When the light comes on after blinking for 1 minute: Have the system checked by Malfunction in the tire presyour Lexus dealer. sure warning system Master warning light A buzzer sounds and the warning light comes on and flashes to indicate that the master warning system has detected a malfunction. →P. 360 *1:Open door warning buzzer: →P. 365 *2:Driver's and front passenger's seat belt buzzer: The driver's and front passenger's seat belt buzzer sounds to alert the driver and front passenger that his or her seat belt is not fastened. The buzzer sounds intermittently for 10 seconds after the vehicle has reached a speed of at least 12 mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in a different tone for 20 more seconds. 354