00 A6 2.7t.

The temperature that normally reads on my dash no longer appears. When I start the car the large "OK" appears, and when I press the **** that changes my date and time, the menu scrolls thru the options so I don't believe it's the bulb. Is there a secret combo of **** turns I should know to get the temp back? Or, did the actual sensor go bad?

 

I assume the sensor is bad, or missing. In the front behind the bumper, you should be able to see it. Take a look and see what you find. Good Luck.