Everything happend so fast that I say it flickered. But keep in mind, where I sit in the car, the steering wheel blocks view of the check engine light so as I glanced at it...it was on and off that fast. Hard to explain if you know what I mean. All I knew is that I was happy then I was pissed LOL.
Battery terminals are as clean as your dinner plate. The car is spotless. The Dealer told me they thought it was new. But, I will have to check on the battery age as it was in it when I bought it used 2-1/2 years ago. I will report back on the age.