Passing another vehicle
If your vehicle’s speed is being regulated by ACC and the driver indicates that he/she would like to pass the vehicle ahead by using the left turn signal, ACC can assist by accelerating briefly.
This function is active at speeds above approximately 45 mph (70 km/h).
Warning
Please be aware that this function will also cause the vehicle to accelerate briefly in certain situations other than passing another vehicle, for example using the left turn signal to indicate a lane change or a turn toward a highway exit at speeds above approximately 45 mph (70 km/h).