With the POWER button in the ON position,

Press the Lane Driving Assist button located on the steering wheel to turn on Lane Following Assist.

The white or green () indicator light will illuminate on the cluster. Press the button again to turn off the function.
Select or release the setting from "User setting → Driver Assistance → Lane Following Assist.“on LCD display.

Once the function starts working, the indicator light () comes on the instrument panel.

The indicator light colors according to the function status are as follows.