Dave, on my 2011 4/4 that button will light up if you have it selected & then turn the fan on. I believe it is wired into the circuit board behind the dash & obviously designed for cars fitted with aircon. Probably a way to repurpose it, but not straight forward.
Rog, on here May have more info, as he has done quite a bit with the circuit board.
Last edited by IcePack; 24/11/24 11:08 PM.
