Lexus GS 350 Owner's Manual page 290

Turning LKA system on
Press the LKA switch to turn the LKA system on.
The LKA indicator illuminates and a message is displayed on the multi-information
display.
Press the LKA switch again to turn the LKA system off.
When the LKA system is turned on or off, operation of the LKA system continues in
the same condition the next time the engine is started.
GS350/GS300

GS350_300_GS F_OM_OM30J17E_(GE)
4-5. Using the driving support systems
GS F
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289
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