I have a 1999 C220 CDI. Only got the car about a month ago.First the outside temp display is always shown -38C. Checked the sensor and it was missing! I thought it's just a matter purchased a new one from the dealer. Finally, received a new sensor a couple of days ago. Clipped it on to the wire connector just behind the front number plate. Still no joy, the display is still shown -38C. So, cleaned it with the contact cleaner. Still no joy:crybaby2:!! Can anyone tell me what else i can do??