My engine boost stopped working in July 2016, my Baker Motors Benz dealer est $700.00 to repair in 3 days, 14-18 days later est $5,400.00 would be needed and after 4 more weeks est $19,000 dollars with no guarantee of repair. They kept the vehicle 6 weeks and I had to pay $2,200.00 just to have them release the ML320 Diesel BlueTec back to me, with no change in repairs, same issue. I evaluated the problem issue and determined it was the catalytic converter was clogged up with over flowed diesel fluid and stopped up the converter and the sensor would not allow the boost to operate. I purchased a converter from another dealer for for $2,050.00 dollars and paid my same dealer $565. dollars to install my new converter. I now have the vehicle and is running OK for 2-3 days. What a ripe off !!!