Mercedes-Benz—Sprinter Van, type 906 with engine OM646—upgrade of software for engine control unit
What are the defects?
The previous software upgrade for the engine control unit may not fully overcome the possibility of piston damage occurring as a result of a less than ideal combustion process. If the vehicle continues to be driven with a damaged piston, engine oil may be injected into the engine compartment and could come into contact with hot components.
What are the hazards?
What should consumers do?
Make arrangements with their authorised Mercedes-Benz dealership to have the engine control unit re-programmed once again and receive a higher level of software, free of charge.