Lexus 2013 GS 350 Owner's Manual page 204

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4-5. Using the driving support systems
LKA (Lane-Keeping Assist)
Summary of functions
While driving on a freeway or motor highway that has lane markers and
no sharp curves, the system recognizes the lanes using a camera located
above the inside rear view mirror as a sensor to assist the driver with stay-
ing in the lane. The LKA system has two functions.
Camera sensor
: If equipped
GS350_U (OM30C34U)
I n f o r ma t i o n P r o v i d e d b y :