If you have this problem, don’t rush into replacing the DPF filter. A DPF fault code doesn’t always mean you need to replace the Diesel Particulate Filter (DPF), a repair that can run from $4000 to $6000. This problem is often fixed by manually forcing a DPF regeneration. Ask your Mercedes-Benz dealer or mechanic to perform a forced DPF rwDcF8C.

how do you clean a dpf filter while driving