It seems like I'm making a lot of threads today :-( Tonight i was out in the car with the radio off and i can hear a hissing sound coming from the brake pedal. When i got home i did a bit of googleing (as you do) and it seems that its a common fault with the brake booster (servo) only my problem has a bit of a twist. 1. Its only hissing when my foot is off the pedal and as soon s i put my foot on the pedal it stops 2. Vag-com isn't showing any faults with it 3. No check lights on the dash 4. No lumpy idle 5. Brakes are really sharp All of this is the opposite to what I've been reading from people with same hissing sound coming from the brake pedal that ended up being the brake booster. Any ideas guys?