2015 Mitsubishi Outlander Sport electrical system problems

I just bought my first brand new car june 6, 2015. I have only made 1 car payment and on 7/23/15 I go to get in my car and it will not start had several messages on the dash so looked in the manual and it said call dealership and I did. After calling them 5 times in a row the owner answered and I explained what the car was reading and that it wouldn't start so he said him and a mechanic would be there in a minute. I only work 5 mins.away. They arrived and said they had never seen that displayed before.

I have a 2015 mitsubishi outlander sport I brought brand new off the lot. In the summer of 2019, the "remove key" light would come on after my key was removed from the ignition. .on 12/19/19, my car would not turn over to start and the "remove key" light stayed on. I had car towed to the dealer. Dealer said key cylinder needed to be replaced and my battery was dead. I replaced the battery and told them this was the 4th battery I have had to replace with this car. I bought new battery and dealer ordered part.