Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Dear customer, thank you for choosing Justanswer. My name is Michael, I would like to help you.
I am now dealing with your question, I will be back in this chat in a few minutes.
I hope it's not too late for my answer.
Buying a vehicle with a problem at the DPF is a risky business.
At best, the particulate filter is clogged. Then you have two options. Either you buy a new one and have it installed (because the training values have to be reset, only a garage can do this). ( the cost is usually around GBP 800-1500 depending on the filter type). Or you have to remove the filter, send it to Elitedpf.co.uk and have the training values reset afterwards. This company will clean the filter to a level that corresponds to a Mercedes replacement filter.
It is also possible that a defective EGR valve or injector has caused the filter to clog. In this case, GBP 2-3k can be quickly collected. You should consider this when buying.
Without an extensive diagnosis in the workshop, which is now the cause, there is always a residual risk.
I would be very happy about a rating with 5 stars over the star bar at the top of the page, without this rating the site operator does not pay us experts.
It's difficult to give you advice.
Does the seller have a proof (e.g. a printout showing that only the filter is clogged). Then you can assume that the rest is ok.
If not, maybe there is a workshop in his vicinity that will quickly carry out a forced regeneration. This is initiated via the workshop computer. The lamp should be off after that, if not, there is more defect than just the DPF.