If your question pertains to the massaging aspect only, IIRC, those do cycle in 20min durations total, before auto shutting off.
You would have to depress the button again to restart the cycle.
In regards to the lumbar bladders, again IIRC.... one would toggle the button up (once) for each individual bladder.
Merely pressing down (or up) repeatedly in either direction, would cycle through from top to bottom.
In other words, down 3 times to start at lowest lumbar, up once for middle, up once more for top bladder.
Then back down one for middle bladder, then down a 2nd time, to activate lowest bladder.
Hope that made sense

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