Hello, recently, my renault megane 1998 coupe key started to work a little bad, so i changed the battery. After changing the battery, when i press the button on the key, to unlock or lock the car, nothing happens. I got the 4 digits code, then you turn on ignition, enter the key with the door lock/unlock button, it will start. Maybe anyone know, how to make the key work again, or is it a immobiliser problem? Because i'm living abroad now, and to check the problem in the car service, it costs about 100e+, not to talk about the repair... So maybe there is a solution to fix it for myself?