Today I read by chance on the Internet that if the particle filter is closed, you don’t have to replace it. You can buy a cleaning agent and spray it into the particle filter via the opening of the temperature sensor. And then drive a distance over the highway. 95% of this cleaning should clean the particle filter again. There are also companies that carry out such a cleaning. Click here for more information: Quotation: Especially by frequent shorts This is due to the fact that the required temperature is not reached for self-cleaning. As a rule, the filter has to be replaced with a new one. In the meantime, however, there is also the possibility to clean the particle filter.How to clean a particle filter Greeting Gero