Battery Dead problems of the 2015 Mitsubishi Outlander

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. The key cylinder part came in and was replaced on 01/09/20. On 01/20/20, the "remove key" light came on again and my car would not start. Towed car back to same dealer who found key cylinder was incorrectly installed and reinstalled cylinder. Today 01/22/20, the "remove key" light came back on. I'm waiting for a call back today from the same dealer to see if there's anything else that can be done. The "remove key" light prevents you from locking the doors normally, while sitting in the car, I had to lock all doors before removing key from ignition. The "remove key" light turns on when I remove key. Then after I exit the car and close the driver door, I have to use my key to lock my driver door. Otherwise I can't lock all of my car doors with the key or key fob and have to get back in the restart car and start cycle over. I asked dealer to check electrical system because I have replaced the car battery 4 times on this car already which is ridiculous and costs me money since it's not covered in my car warranty or extended warranty. I only have less then 34,000 miles on my car. Does anybody have any suggestions on remedying this issue?? did I purchase a lemon?.