Cyclone
Cyclonic Member ((.oO))
How new? My car is 2 months old, and I have the button.
It could have also been on cars on either side of yours in the Production line. There was a thread about it here, so there is at least one forum poster w/o an on/off switch. But who knows when that forum members parts were "sourced" versus others.
85D TACC cruise stalk missing button