I was driving to get a coffee after driving the majority of the night in my 30 thousand kilometre, 2020 2.4L NA Kia Optima ex. About 2 kilometres away my forward collision sensor malfunction comes on (second time in a month), I pull into the parking lot and go to reverse into a parking spot and I noticed an odd sound when I shifted.(I was fully stopped but on a downwards slope, and then I noticed my backup camera wasn’t on. I reversed a bit and went out of reverse into park, and tried to go back into reverse to see if my camera was messed and I couldn’t shift. I had to shut my car off and turn it back on to shift effortlessly in reverse. Don’t know if any of these are issues related to a single thing or a multitude of different things wrong with the car.