Andy Rehring Tech rep for HWH, set up CC's leveling and slide out systems. Hydraulic jacks versus air leveling systems. Intended to be a relatively fast way to level the coach. Less stable, and not as much correction. Park, set brake, leave engine running, tap it twice, coach will level itself on the way down if possible.
Yellow lights indicate low portion of coach.
Once they're extinguished, red light stops flashing and goes steady. From that time it sleeps for 30 mins, wakes up looking for yellow lights, makes correction if it sees it. After that, it sleeps until after one yellow light comes on. It will take a LOT longer to level after the engine is shut off. You'll only have a very small compressor working for you.