Light load feature.

it is for the tire pressure monitoring system. It allows you to run lower pressures in your tires without the tpms going off

Chris

I can't seem to find it doing anything for me....not sure tho

Thanks for the reply.

While not towing...200lbs or less...you can air the rear tires down to 45lbs. This smooths out the ride. What you do is with the key off...air down the tires. Turn the key to the on (not running) position and press the button on the dash. It will light and stay lit. This will keep your tire pressure warning light from comming on. I think it still works if you get below the 45 level though.