Witnesses Fiat 600

Hello everyone, I hope this new year is starting well, well I have a Fiat 600 of 1999 900cc and the problem is that when I take out the key the witness of the oil and the battery is burned I have to put back to put it to start taking out the key again and go out but after some attempts ... the battery changed it, the vehicle was stopped a couple of months was the only thing that I did. bye .....