Check Engine Light On problems of the 2013 Audi A6

In late December 2017 out of nowhere, my car began to display the warning, �turn off engine and check coolant level� (photo attached) ; this was very alarming as I take very good care of my car and have had all of the required maintenance done at the dealership. I immediately called and had an appointment scheduled at the dealer. Just a few days later on January 5, 2018 I took my car in for service and was told that the water/coolant pump needed to be replaced (attached). Unfortunately, I felt that the cost was too much at the dealer and I took my car to a reputable mechanic in the area who replaced the water/coolant pump. To my surprise in September 2018, Audi announced a recall for the water/coolant pump. To my understanding, this means that they are liable for any damaged pump. With that being said, I would assume that any issues related to the pump should also be covered under that recall. As noted on my service memo from the Audi dealership when I had my car inspected for the warning �if not replaced, the engine's cooling system will not be operating efficiently and at the proper temperature resulting in catastrophic engine damage. � in February 2018, a little over a month after having my car's water/coolant pump repaired, the car started to idle when I tried to pull out of my drive way. Not even a block away and the check engine light flashed on and off and the car cut off while driving and stopped in the middle of the street. I was so scared, but relieved that I was not hit by another car. I waited a few minutes and was able to get it back to my home where I immediately had it towed to my mechanic who told me I needed to replace the engine. I didn't have him do the repairs, but I then had it towed to the Audi dealer who told me the same thing, to replace the engine.