LG recommends that you check to see if your washer is level with your floor before using the Spin Sense feature. All four feet of your washer model should make full contact with the floor's surface.
If you have an LG washer model that has a Spin Sense button on the control panel, press the button and hold it for at least three seconds after loading your laundry and closing the washer's door. The Spin Sense indicator light will blink when you've activated the feature.
If you don't have a Spin Sense button, press down the option button, then select the rinse and spin option. The Spin Sense indicator light will turn on when you've activated the feature.
The Spin Sense feature negatively impacts how much water the spin cycle removes from your laundry, according to ConsumerReports.org. You may need to extend your drying time as a result of this.