Switch/control question
 

On the left side of my 2008 CX-9's dash there are 3 switches over the little coin compartment. (above the hood release). The wwitch on the far left has numbers on it and rolls up and down to change something. What does this switch do? I can't find the answer in the manual and moving it around when the car is running makes no difference that I can see.
Thanks for your help.
Don (MazdaWinny)

It will be headlight aim adjustment. Park your car up against a wall, or garage door, turn on your headlights, wait a minute, then turn the dial & watch the vertical alignment on your headlights change.

Thank you GrimReaper
 

Eureka! GrimReaper answered my question about the mystery switch. 1 year of ownership and I had no clue. I couldn't locate it in my owner's manual because I didn't know what it is.
THANKS AGAIN, GRIMREAPER!!!!