The scanner points to the secondary air pump (P0411) as the cause of my
check engine light. Has someone experienced this and did replacing the air
pump solve the problem. I realize this is just an emissions thing and does
not really adversely affect the car's performance. but I might want to
tinker with it sometime.
I am guessing this is a fairly common issue with many MBs. My car has 270K
miles and I don't think the air pump has ever been replaced.