What are the functions of the Toyota Sienna buttons?

[DallasLee]

The Sienna multifunction buttons integrate commonly used features such as Bluetooth calling, channel switching, and volume control. The button area on the left side of the steering wheel is highly functional, incorporating controls for the exterior rearview mirror adjustment, ESP, lane change assist, front parking radar, and headlight height adjustment. Additional functions, such as the lane keeping assist button, are also located in this area. When activated, the system continuously monitors the vehicle's position relative to the road markings. If the vehicle drifts from the center of the lane without the system detecting an obvious lane change operation or the use of turn signals, the system will alert or intervene to help the driver maintain the vehicle in the current lane. The wiper control switch is located on the right side of the steering wheel. By rotating the switch, you can turn the front and rear wipers on or off, as well as adjust the wiper speed. Some models also feature an adaptive cruise control switch, which can be highly useful during highway driving.