Hi - wondering if someone can help!! I purchased an 03 A6 3.0 with 41K miles last summer. Car is great, other than once the outside temperature got colder, it makes a very loud steering noise. Took it into Audi for service and they told me there was nothing wrong with the steering, just that the car makes this type of noise in cold weather. They could not replicate the noise as it was 50 degrees when I took it to Audi in December. They said the steering fluid was fine, as was the steering pump. My Audi warranty expired in 12/06 and now that the really cold weather is here, it makes this noise all the time. The noise seems to intensify the more the steering wheel is turned to the extreme right or left. What is wrong with my car????