The W/S211 fix is a change to the pipework to add a damper - to be done only in response to complaints - not a recall!
Takes about 4 hours, much quieter afterwards (so the "farting" can only be distantly heard if the car is quietly at idle instead of getting a "what's that?" from every passenger).
Takes about 4 hours, much quieter afterwards (so the "farting" can only be distantly heard if the car is quietly at idle instead of getting a "what's that?" from every passenger).