Hello, I hope I can be of assistance.
Is this in the middle of the dash on top as shown below?
Let me know and I'll reply as soon as I'm able to.
Yes it. is in the middle
If it is the component shown in the image then this is the sun load sensor for the air conditioning system. The data from this sensor is used along with the ambient internal and external temperature sensors for air conditioning temperature calculations, it has a photoelectric cell that measures sun light intensity.
Let me know if I can assist further.
what is the device fixed to the inside of the windscreen at the top just behind the rear view mirror?