2004 Audi A4 Quattro Q&A

2004 Audi A4 Quattro Question: Why does my powersteering whine when it's cold outside?

There's plenty of fluid in it. When it's warm outside there's no problem. -
Answer 1
fluid may be degraded and needs flushing. try that 1st it may help. -
Comment 1
Ok. Thank you. -
Answer 2
CORRECT fluid in it? -