Toyota C-HR 2015 Owner's Manual page 426

4-5. Using the driving support systems
424
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
●
When driving on a road surrounded by a structure, such as in a tunnel or on
●
a bridge
While the vehicle speed is decreasing to the set speed after the vehicle
●
accelerates by depressing the accelerator pedal
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