2014 Jeep Grand Cherokee exhaust filter message

A couple of times a year, I get a message regarding that the exhaust filter is a 100% full. I get a message after that I should drive my car on the highway at high speed respecting the speedn limit in order for the filter to cleen itselg, but it doesn’t work and finally they suggest to see the dealer for service. What sould I do to get this resolved.

What in the world are you talking about? Exhaust Filter ?

How was it resolved the first time the Diesel Particulate Filter message came on? Did you take it to the dealer and have them drive it for you or did the filter value return to normal after you drove on the highway?