Auto-dim on display not working.
I bought a 2016 scion iA, still under warranty. The display screen's brightness can be set to high or dim, but the auto-dim at night does not work. I was told that a sensor on the dash should control that. On the right side of the dash I see a plastic dome that seems to be a cap of some sort, not a sensor.
Was the auto-dim function on this model an option, and could I make it work by pulling this cap and installing a sensor? If so, what would be the part number for that sensor? Thanks for any help.