This isn't my ride, it's a friend's, and it's in my shop to get front control arms redone. Couple of leaks too. I don't know the when or how of the problem, just that he's suffered through it awhile. The filters are almost clean, I bet the previous ones loaded up and blew through, then he changed trying to fix it. He's going to be out of town for a week, woul love to fix this as a surprise. Going to duct tape a hose into shop vac nozzle and try it. I'll be over the moon if I don't have to pull the dash

I'm not familiar with your particular problem, but I have remedied enough automotive problems with my Tacoma and my wife's Ford Edge to say that youtube is your best friend.