TOYOTA 2010 Prius - Manual (Page 276)

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2-4. Using other driving systems
Disabling pre-collision braking
Enabled
Disabled
The “PCS” warning light comes
on when the pre-collision braking
is disabled.
Radar sensor
Detects vehicles or other obsta-
cles on or near the road ahead
and determines whether a colli-
sion is imminent based on the
position, speed, and heading of
the obstacles.
ITO24P116
ITO24P131