Mercedes-Benz Sprinter 906
What the hazard is
Mechanical malfunction
What to 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.
Defect
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.