Hi folks, so I've only owned my A3 quattro for a couple of months and I love it! But there is now a strange problem with the coolant temp gauge.. It used to be that the needle sat right in the middle of the gauge when warmed up, but now it barely makes it over the second notch (70degs). Once the car is up to temp and I leave it for a few minutes when I turn the key the temp gauge goes to the middle 90 degs. Then when while driving down goes the temperature gauge.. The interweb suggests it's the sender but what do you all think?