My Brand new Niro 4 self-charging Niro is sitting on the drive when trying to open door realized battery had gone flat. I rang kia care and RAC told me they would come out; within minutes they had rung back and said they could help me without coming out, so for anyone like me who has not read the handbook in detail this is what they told me to do. Firstly take the manual key from the fob insert in the lock to open door. When inside press the 12volt battery button place fob against the start button and amazingly it started.Was then told to go for a run to charge. This saved a lot of time and may well be useful to others as I guess with cars not being used much at the moment it could happen a lot.