Hi all My brother has a mk6 GTI that has developed a hissing sound from the break pedal which goes when the pedal is pressed. Is this something like the servo/ break booster??? Hoping it's not an expensive fix.
they hiss when your engine is off and you press them. I dont know about when theyre running. Is the servo definitely working?
Yes all working fine and no sign of brake fade. When you lightly press it stops, let off and it builds back up. He took it to a garage (independent) and they say they can find no fault.