Toyota Highlander Hybrid 2017 Owner's Manual page 303

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Conditions under which the vehicle-to-vehicle distance control mode
may not function correctly
In the case of the following conditions, operate the brake pedal (or accelera-
tor pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system
may not operate properly.
● When the road curves or when the
lanes are narrow
●
When steering wheel operation or your
position in the lane is unstable
●
When the vehicle ahead of you decelerates suddenly
HIGHLANDER_HV_U (OM48F12U)
4-5. Using the driving support systems
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