Heater button

[DaveW]

Hi folks, there's a small black round button by the fan speed knob on the C7 dash. Anyone know what it's for?
Cheers
Dave

 

[elan2s]

Hi folks, there's a small black round button by the fan speed knob on the C7 dash. Anyone know what it's for?
Cheers
Dave

At a guess I think it is a temperature sensor for the a/c system. I notice that my wife's VW Golf actually has two buttons like this in the temp control panel

 

[BahnStormer77]

Is it not labelled in the manual?