My audi sterring system is making a loud noise should I simply add power steering fluid?

The Audi is a '98 A4 2.8 quattro with 130,000 and thouroughly serviced.My audi sterring system is making a loud noise should I simply add power steering fluid?yeah, if the power steering thingy is empty, then you should fill it, that's just common sense. but if the power steering thingy if full and is still making that sound, then it could be more serious than that.My audi sterring system is making a loud noise should I simply add power steering fluid?You should only add power steering fluid if the power steering reservoir fluid level is low. If that's the case, and if doing so eliminates the noise, then you've fixed it.