Toyota 2015 Prius Owner's Manual page 295

Temporary cancelation of the LKA system functions
■
If any of the following occurs, the LKA system functions will be temporarily
canceled. The functions will resume after the necessary operating conditions
have returned.
●
The steering wheel is turned as far as necessary to cause the vehicle to
change lanes.
●
When the system detects no-handed driving. (The lane keeping assist
function will be temporarily canceled, but the lane departure warning
function will continue.)
●
The turn signal lever is operated.
●
The vehicle speed deviates from the operating range of the LKA system
functions. (The buzzer will beep twice when the lane keeping assist func-
tion is being canceled.)
●
When the lane lines cannot be recognized while driving. (The buzzer will
beep twice when the lane keeping assist function is being canceled.)
●
The wiper switch is set on high speed mode. (The lane keeping assist
function will be temporarily canceled, but the lane departure warning
function will continue.)
●
If the vehicle crosses a line for approximately half a minute or more. (The
lane keeping assist function will be temporarily canceled, but the lane
departure warning function will continue.)
●
When the lane departure warning function is activated.
The lane departure warning function will not operate again for a several
seconds after it has been activated, even if the vehicle leaves the lane
again.
The lane departure warning
■
It may be difficult to feel the sensory warning depending on the road condi-
tions.
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2-4. Using other driving systems
I n f o r ma t i o n P r o v i d e d b y :
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