When I wanted to leave this afternoon, the check-in light suddenly lit up the soot filter, see the manual. It is already clear to me that I have to let the particle filter burn free. Only after 1 hour of driving over the highway with a constant 120 – 130 km/h the lamp has still not been used, so I have to assume that the regeneration of the filter has not worked properly. I would be happy if one of you had a solution proposal. Well, if it is relevant, I have a D5 of 08. Greeting from the Lower Rhine