GTI Digital Thermometer - Dodgy readings

[VR6 South]

I know the weather changes at the drop of a hat in this country. The reading on the digital thermometer of my GTI seems to fluctuate more than the speedo on Knight Rider I didn't feel it but apparently (according to the read out) it was -33 at one point yesterday . First point will be to clean the connectors and temp sensor but where do they live???? Has anyone else experienced this or anything similar?

[JWC]

I think the temp sender lives behind the front bumper.

[polo2k]

behind the os fog i think

[jessicasteven]

hi everyone i have a digital thermometer and it seems to go hay wire already. i have got no idea how to calibrate it. the question here is can i calibrate it by myself? how? if i have to send it to a repair shop how much do i have to prepare to pay and which shop do you recommend.