2010 Toyota Sequoia Owners Manual - Page 1251

5-2. Steps to take in an emergency *1 : Open door warning buzzer: The buzzer sounds to indicate that any door is opened (with the vehicle having reached a speed of 3 mph [5 km/h]) *2 : Driver's seat belt reminder: The driver's seat belt reminder sounds to alert the driver that his or her seat belt is not fastened. Once the engine switch is turned to the ON or START position, the buzzer sounds for 6 seconds. If the vehicle has reached a speed of at least 12 mph (20 km/h), the buzzer sounds intermittently for 10 seconds. Then, if the seat belt is still unfastened, the buzzer will sound in a different tone for 20 more seconds. *3 : Front passenger's seat belt reminder: The front passenger's seat belt reminder sounds to alert the 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. *4 *5 : Vehicles without multi-information display : Vehicles with multi-information display