Suzuki Jimmy Key ZV doesn’t work anymore

Hello my dear ones, I hope someone can help me. Have a Jimny Ranger BJ 2014/2015. My key ZV did not work anymore therefore I changed the battery correctly according to the instructions of the manual. No change… In the manual it does not have to be learned, nevertheless I tried it after all possibilities that I found on the Internet… without success… can someone help me? Would you like to be a dealer since he sent me a few times very bad and intentional Ezogt has… Hopeful Petra