Peterbilt Evolution Seat Question

Hello all, I hope all of you are surviving the plague and toilet paper hoarding.

I am going to be getting a new (to me) truck in the next few weeks and it has the Peterbilt Evolution driver's seat in it. Similar to this one :

I drove the truck for a day a couple years ago and the one thing that stuck in my head is that the seat drops to the floor of the truck as soon as you get out of it. And then, when you get back in, you have to climb down onto the floor and sit there muttering curses at the designers while it reinflates itself.

Surely, this is a "feature" that can be disabled. Right? Please?

I have done some looking but I can't seem to find an instruction sheet for the seat (Peterbilt's website is useless). The driver manual tells you very little useful. I found an article in Overdrive that states

Yes. Yes, it certainly does. I suppose climbing down onto the floor and getting into your chair would be "easier" for someone. I am not that someone, however.

The driver who has the truck now does not use the seat's air suspension, preferring to sit on the floor and peer across the windowsills and dash like a soldier in his foxhole. (Or, your grandmother going to the shops. You pick the description that amuses you most.) Anyway, he has no idea how the seat works.

Since I can't find tons of information, and complaints, about this, I assume it is a simple matter of knowing what control to lock out so the seat stays in place like any other air seat. I suppose I could just wedge a piece of 4x4 under the seat, but, surely, I cannot be the only person in trucking that wants my seat where I left it when I get back in my cab.

Does anyone know how to control/disable this "feature"? Or, have a link to a manual for the seat?

Any information is greatly appreciated. I just want to be prepared on the morning I get to work and there it sits attached to my trailer.

 

Thanks for the response. I realize that button does control it manually but I also remember it just falling away when I would get off the seat and then I would have to sit on the floor and wait for it to air up again.

Is there a lockout for that?

 

For anyone stumbling upon this thread looking for an answer: I finally ended up in the truck and got the answer about the seat from my boss.

It is set to drop in an effort to make the seat last longer (reduce the rounding of the outboard seat edge from getting out of the seat that happens over time). I'm dubious about how much the seat drop thing will actually help.

It still annoys me, but I can deal with it knowing that it is purposeful not just the universe (or the gods of Peterbilt, messing with me.