Hi a4 experts. need a bit of tech help..... Does anyone know what the hydra solenoid connection to the engine mounting on the passenger side does???? It came up on my service diagonistic check today and my mechanice - a vw audi specialist who i have dealt with for many years says he has never come across a prob with one!!! he says only 60£££ for new part but says not to bother for time being... What do you guys think?????