horizon32

Recently discovered that valve #4 is bad; not parts within valve, yet port itself, vehicle only has 100K on it. Contacted MB with diagnosis and they are telling me the vehicle MUST be taken to a MB dealership for diagnosis before they will assist me. Curious to know WHY the vehicle has to be checked by a mechanic at a MB dealership service center? Don't they trust the diagnosis from a MB Certified shop/mechanic?

Plutoe

I think you are making much todo about nothing---you say "from a MB Certified shop\mechanic" why are you going to an MB dealer as you believe the MB Certified mechanic is MB----if that is what you believe fix the car and get on with your life!!

horizon32

Thank you for your lack of insight! I did have the vehicle checked by a MB certified mechanic at his shop as stated. The mechanic told me the problem was due to faulty manufacturing, therefore I contacted MB USA to be compensated for bad engineering, a bad valve bore. MB USA "mandates" the vehicle be taken to a MB dealership for yet another diagnosis. So again the question is, "Why do I have to have a second diagnosis by ONLY a service tech at a dealership?" Doesn't MB recognize a MB Certified Shop diagnosis?

Quadcammer

apparently not.

Shifter

There are no "MB certified shops" other than dealerships. Period. If there were, well, they would be a dealership right? What you are referring to is a "independent" shop.

horizon32

Okay, my bad for incorrect terminology! Thanks. Yet, same question, why doesn't MB accept diagnosis from "independent shops?" Just curious.

waybomb

It's their money. They want to know why they are spending it. What would you do if your owned MB? Just go ahead and do whatever some flunky backyard has-been says?