DEF FILTER?? I think you mean DPF filter. If you have ALFAOBD & a bluetooth dongle I think you can do a stationary regen. I would suggest a monitor that can monitor soot load int the DPF, I use an EDGE CTS 3 in my truck, you have to set the parameters but it's not too bad.
These are great trucks but the regen situation causes problems, it's supposed to regen seamlessly in the background, which it does on the highway, in city driving not so much., there's really no way to know. When mine shows the soot load at 65% (stage 1 tune) I know that it will need to regen SOON, when it gets to that point I just go for a ride in 6th gear at 60-65mph till done.
Your other option is a stage 2 tune, or a trip to the dealer or other shop with a good scantool, ALFAOBD & the dongle will set you back a little over $100 & you'll need an android device (I used a KINDLE) or a windows 10 computer & a compatible OBD dongle, I think mine is an MX2.. You should have had a message on the EVIC at *0% to drive it at hiway speeds to complete the regen.
GOOD LUCK WITH IT.