I have a B5 A4 with the full LED information display between the speedo and rev counter - car is new to me, so not quite up on the correct terminology for it all yet. However, the abmbient temperature that is shown is a good few degrees on the positive side. My other cars all read around the same (ish) but when I was scraping the ice off the other night, I was greeted by +7.5 degrees on the display when it was clearly around 4 or 5 degrees out. Is there any way to recalibrate the gauge?, is the sensor faulty? Does this ambient sensor affect any fuelling / mixtures? Or am I stuck with it reading wrong? basically what can I do, as if I am going to be confronted by the gauge every time I drive the car, I would rather it was a little nearer to the truth. Apart from the gauge, its getting me quite hot under the collar as well Any advice please?