At AECS, we get lots of questions about Diesel Particular Filters (DPFs). In our DMS 1-3 Common Rail Diesel training, we spend a lot of time on what goes on and what goes wrong with DPFs. We also deal with what you can do to rectify DPF problems. From this perspective, I thought that it would be a good idea to look at one particular case a little bit more in-depth with a 2012 Mercedes ML 300 V6 3.0L Turbo Diesel