Temperature Display Incorrect

Hi all,

Am new here and am having a small problem with the temperature display that's meant to show the outside temperature. It's nearly always 5 to 6 degrees under what the actual temperature is.

I've tried searching on here but not sure what sensor it uses. Anyone shed any light on this or what could be done to reset it or what sensor to replace?

Mine is the same, it seems to be intermittent, driving around a few minutes tends to bring it down to correct temp.

Mine is always out even if driving for a while, funny seeing people's reaction when they get into the car!