Hyundai Coupe SIII 2007 Exterior Temperature Sensor Images and Info.
This is the part that provides the outside temperature to your readout inside the car.
It is also used to control the air conditioning (A/C) if your vehicle has it fitted. Therefore if it fails, it could screw around with your A/C.
The Sensor is located inside the front bumper and infront of the radiator, attached to the centre vertical metal upright.
Click on images for more detail.
If you have any more information or advice about this part, please use the comments section below.