I see, I've never sat back there, it's the kids room. I've never tried to open the vents either.
I suppose an automatic electric one would have added to the cost and weight which they were trying to keep low on this model. I pull it with a half ton truck so that's ok with me.
I won't take it in for warranty work unless it's something major that I can't fix, I hope that doesn't happen. Most of the dealers are too slow for me. Might call around to a different dealers and see if you can get warranty work done there, it does not have to be at the same place you purchased it.