So I've noticed that the outside temperature reads about 10 degrees too high in our XC60. As an example, when it is 100, it reads about 110. While no car I've ever owned is 100% accurate in this area, most are within 4 or 5 degrees tops. This delta makes it a bit useless. We actually had an issue with our external ambient temp sensor (threw a check engine light) a while back and I'm wondering if we still have an issue. What are you guys seeing?