Carbon Build Up Clean
Mercedes say they need to perform Carbon Build Up Clean.
The car is driven hard and being under warranty gets service regularly. The above codes clearly indicates coil pack issue and upon checking the procedure to fix the above codes it clearly does not say carbon build up. according to this from mercedes.
https://static.nhtsa.gov/odi/tsbs/20...51939-9999.pdf
I will be taking the car to another dealer and check what the say after properly diagnosing not just by reading the codes as the previous dealer did.
Has anyone experienced the check engine light with these codes and what remedy?
Thanks


