2010 Lexus RX 450h User Guide - Page 575

5-2. Steps to take in an emergency Warning light Warning light/Details 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. Tire pressure warning light When the light comes on: Low tire inflation pressure Correction procedure →P. 585 Adjust the tire inflation pressure. When the light comes on after flashing for 1 minute: Have the system checked by Malfunction in the tire presyour Lexus dealer. sure warning system *1: Open door warning buzzer: The open door warning buzzer sounds to alert one or more of the doors is not fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]). (→P. 591) 5 *2: Driver's and front passenger's seat belt buzzer: When trouble arises 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 reaches a speed of 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. 579