I have been told that any fault with my cylinder 4 and 02 sensor should manifest itself by the check engine light appearing???
My check engine/engine fault light has never ever come on despite having this fault for over a year now, what does that indicate???
Please don't gang up on me...
ACMS Mercedes Ltd is an independent Mercedes-Benz service specialist based in Walsall. The company provides high levels of customer service and quality workmanship, at competitive prices. Call Mark on 01922 634666 or 07530 456000