NHTSA Complaint #11686218 — 2016 FORD EDGE

Check engine light came on. A friend of mine said she saw smoke from my rear exhaust. Ran codes came back as a misfire. Spark plugs; the cold idle had become a little rough. I was driving home from work 2 1/2 weeks ago and had to stop because a warning came across my screen about hot coolant or engine in red with exclamation marks.My daughters boyfriend came out where I stopped and changed my thermostat because one of the hoses was hot and one not showing it was stuck closed. I asked him to do my spark plugs at a later date. I took the car to Byerly Ford for a coolant flush because I realized I should have used the same coolant. I asked for spark plugs. They couldn't fit it in that day because I scheduled online. He asked if I could leave it overnight. I couldn't. I was then told it may be this bigger known problem if residue under spark plugs come back. He also asked if I had been topping fluid. I told him no. Last Friday night the bf changed my plugs. Residue under # 3. He asked why my coolant looked brown. He opened the cap and saw the coolant was low but good color and the container was stained. I bought the correct coolant. I called Monday morning to see if I could get it in that day. I was sent to voicemail of who is in charge of Engine work.I left a brief message as was requested. I haven't received a call back. Tuesday night (last night) after opening the cap to checking my coolant level and the level rose a bit; my car wouldn't start. I came across TSB#22-2229 which states safety concerns. This includes my cars year, make, model and engine type. I read of a class action lawsuit and recall, but when I look up my vehicles recalls this problem is not listed. I will be calling Byerly shortly to discuss me having my car towed up there for definitive diagnosis. My 2016 Edge has 90016.5 miles. I got new brake pads very recently as well as my the works oil change (no issues)and tires are newish.I have cared for this car with the expectation of twice the milage.