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dpf additive

  1. 2011 SW DPF issues

    308 (2007-2014)
    Last week my 115,000 mile SW came up with the DPF filter symbol so below is my understanding so far, I hoping someone can tell me If i'm understanding this correctly. Light can come on if filter needs regenerating or if DPF additive has run out. It came on when I filled up , this combined with...