Subaru Forester EyeSight 2015 Owner's Manual page 67

Turning off Lane Sway Warning
Press and hold the Lane Departure Warning OFF switch for approximately 2 seconds or
longer to turn off the Lane Sway Warning. When this function is turned off, a single short
beep sounds and the Lane Departure Warning OFF indicator light on the instrument panel
illuminates.
To turn the function back on, press and hold the Lane Departure Warning OFF switch again
for approximately 2 seconds or longer. When the function is turned on, the Lane Departure
Warning OFF indicator light turns off.
* Refer to page 60.
When the Lane Sway Warning is turned off, the Lane Departure Warning is
also turned off.
Even when the Lane Sway Warning is turned off, if the ignition switch is
turned off and then the engine is restarted, the Lane Sway Warning will be
turned on. The default setting for the Lane Sway Warning after the vehicle
is restarted is "ON".
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NOTE
Lane Sway Warning
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63