X166 with 278 engine, P030085, P030885 and P030285 combustion misfiring
CEL came on this morning with the codes above.
Google found this https://mbworld.org/forums/attachmen...&ct=clnk&gl=us
which calls for either a potential firmware update or fuel injector replacement.
Is there a newer version of that Mercedes-Benz TSB LI07.08-P-058759 bulletin?
Where can I check if a new firmware version is indeed available?
My VIN is 4JGDF7CE5EA351807.
Anyway, after a short spin around the block no CEL so far. I have scheduled for tomorrow a $195 "BG Fuel/Air Induction Service including BG 44K", but I wonder now whether I really need it

Any advice?
So for the price and at 70k miles, I say cleaning is due.
Spark plugs change as well, only waiting to get a bit warmer here in the northeast.







