That's the one. Since your unit sounds like it kneels automatically with the levelers, that may be the reason you don't have one. Guess they decided to separate the two functions. I just get senile about half the time and forget to dump the air before I level, then I have to start all over. Once I dump the air, I also make sure to put the switch back in the normal position so I don't forget before I drive away. The engine is off then, while I'm leveling, so the bags stay deflated.
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!