It throttles down the flux capacitor from the maximum number of jiggawatts to prevent down hill over-speed conditions.
Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!
After studying the graphic intensely for several hours, and cross referencing it with our cultural heuristics, my archaeology professor agrees that it's the button you push when driving down hills with a tractor tire strapped to the roof of your Jeep.