I have to ask if you could take a pic and upload it for me to see. As far as a filter behind the battery, I'm not sure I've ever seen one. I've owned Dakota's since 1990 up through the last year they made them and never recall such a thing. As far as a leak, the system is sealed and shouldn't leak. The only time I have seen a leak is if it comes through the intake and out the throttle body.
Is the component located near the EVAP test port? Does it look like the attached pic? If so, let me know. The pic is of a canister purge solenoid.
Let me know.
Tuesday, September 22nd, 2020 AT 6:30 PM