Clock/Temperature Display Dodgy

[bwellard]

My outside temperature display is showing silly values rather than the correct temperature. The temp seems to go up, the colder it gets. I've tried reversing the wiring, but still the same prob.
Any ideas?

[SportTourer]

Sounds like the sensor is faulty. These are fairly straightforward to replace. As you have already swaped connections you obviusly know how to gain access. Sensors aren't that expensive from a Dealer and can also be bought from Ebay.