Toyota FORTUNER 2021 Owner's Manual page 237

WARNING
Conditions in which functions may not operate properly
In the following situations, the functions may not operate properly and the
vehicle may depart from its lane. Drive safely by always paying careful
attention to your surroundings and operate the steering wheel to correct the
path of the vehicle without relying solely on the functions.
Vehicle is being driven around a sharp curve.
Objects or patterns that could be mis-
taken for white (yellow) lines are pres-
ent on the side of the road (guardrails,
reflective poles, etc.).
Vehicle is driven where the road
diverges, merges, etc.
Repair marks of asphalt, white (yellow)
lines, etc. are present due to road
repair.
There are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
The vehicle is driven in an area without white (yellow) lines, such as in
front of a tollgate or checkpoint, or at an intersection, etc.
4-5. Using the driving support systems
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