Hello Forum, I have just talked to my FTH about various methods/systems for particle filter cleaning. My opinion: Expansion of the particle filter and cleaning in a special operation = outside the workshop, since there are the corresponding experiences regarding DPF and also the cleaning (according to my knowledge) almost restores the new condition. My FTH said that this would not count because only the removal of the particle filter from Therefore, it would recommend a cleaning in the built-in condition (TUNAP or similar) where a sensor bore in the DPF is inserted into the DPF via a lance of detergent, then rinsed out and the car then burns itself again during driving operation. Lt. of his statement the quality of this cleaning method is just as good as that of an external cleaning company. The costs here are in a similar frame as with the external cleaning (350 – 400€). To this my questions: Has anyone ever had the DPF removed / extended on the RAV4 and can understand the stated cost in any way ? Is there possibly even a support instruction for this ? What do you think of the statement quality cleaning in the built-in condition = quality cleaning in the developed condition ? VG mt123