Small grille on D4 dash?

[Duck's Guts]

While I had the camera out this evening, I took the attached photo.
Anyone khow what the purpose is of the small grille on the D4 dash, located just to the left of the steering column?

[d3syd]

Pretty sure it's where the cabin temperature sensor lives.

[CaverD3]

Yup A/C sensor is at the end of a tube behind the grill.

[Duck's Guts]

So, I assume that this sensor caters for the driver side temp adjustment. That is you set the driver's side A/C temp for 22 degC & this sensor manages the system to that set temp.

So where does the paassenger side set temp get monitored from?

[CaverD3]

I think the one behind the grill is general air temp.
Air temp for each side would be controlled by a sensor in the return air on each side? Anyone know better?

[connock]

HI
The temp for the rhs and lhs can only be around 3/4 deg differance so if the driver has his temp set to 22 deg and the pasenger say 20 deg it will just take 2 deg off the monitered temp of the drivers side.
Well thats how I think it would work