All those keys do is allow you to crank the t-bars past there factory settings there by deleting all downward wheel travel. They also wear out suspension components rather fast, especially the cv's and the ball joints.
Just crank the bars or get #1 rated t-bars, if you don't already have them.
Look on you door tag under SPR, it will say 1, B, or F. You probably have the B rated bars. Last time I checked the dealer had the pair for about $100.