Is the fluid Eolys DPX 42?
Interested to know what the generic name for it is rather than the Fiat partnumber.
Seems there maybe more mileage to try and source it via non Fiat sources.
Having done some digging on the web there's a lot of traffic on this with various people suggesting removal of tht partical filter completely.
I also saw one post tat stated that they had successfully cleaned their partical filter with castic soda.
I know Fiat take them back for factory cleaning but maybe an inbetween quality clean would be worth the effort even if it just gave you 20 or 30 K miles more.
Basically, as other are, I'm not happy at the idea of a £500 plus bill for cleaning a filter, topping up some fluid and resetting the computer.
If it's practical I'd rather try and clean the filter myself. Top up the fluid myself and then get the delaer to reset the computer.