Went to the dealership during lunch to pick up a coolant tank. While I was there, I was able to get a Vehicle Build Sheet and a Vehicle Summary.

On the RPO sheet, I have a few Q'*.

RPO# DK5: Mirror. O/* L/H R/H POWER, Heated

I don't have a button for heating the external mirrors unless they come on automatically with the rear defrost :?

And one more,

RPO# R7N: P.C.N. What'* that?

Thanks for the help

They turn on with the rear defrost.

Thanks Wikoff This is the first winter that I have had with the car so kinda in the learning process

Yes..I asked/looked for the same before. Press that rear def button when they are fogged and it'* magical.