Toyota Sienna 2021, Manual

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4-5. Using the driving support systems
4
Dr
iv
ing
This mode employs a radar to detect the presence of vehicles up to
approximately 328 ft. (100 m) ahead, determines the current vehicle-
to-vehicle following distance, and operates to maintain a suitable fol-
lowing distance from the vehicle ahead. The desired vehicle-to-vehi-
cle distance can also be set by operating the vehicle-to-vehicle
distance switch.
When driving on downhill slopes, the vehicle-to-vehicle distance may
become shorter.
WARNING
● When weather conditions are
bad enough that they may pre-
vent the sensors from detecting
correctly (fog, snow, sandstorm,
heavy rain, etc.)
● When there is rain, snow, etc.
on the front surface of the radar
or front camera
● In traffic conditions that require
frequent repeated acceleration
and deceleration
● When your vehicle is towing a
trailer or during emergency tow-
ing
● When an approach warning
buzzer is heard often
Driving in vehicle-to-vehicle distance control mode