minus-40c when +19C???

The HEVAC (HEating, Ventilation and Air Conditioning) or climatisation decive states outside temperature is -40C when is +19C!!!! Any suggestion on how can I solve this?

It seems like you have a problem with your extreior thermostat. It should be mounted somewhere near the front of the rover. I had the smae problem on my BMW, and all I needed was a cheap little replacement that clips right into place.