Renault Laguna II: Starts and stops by itself. Central locking working intermittently

Dear fellow Renault Forum users,



I am currently experiencing a strange problem with my Renault Laguna II from 2004.



Recently it has begun to start and stop by itself. It never happens when the car is going more than max 10-20 km/h, and most often when the car is standing still.



Sometimes when i am holding for a red light, the car suddenly turns off. Everything is turned off. If i press the start stop button, the car will start without any problems.



I also experience that when i want to stop the car, by pressing the start stop button, the car does stop, but kind of turns off and then turns on ignition again.



Sometimes the car can just start by itself if the keycard is in the reader and standing still.



It really seems to be some kind of electrical problem to me. Because lately i can also not open og lock the car with my keycard. Most often its in the morning, after the car has ben standing out all night. If i then use the emergency key lock to get in and drive for a while, then the central locking works again using the key card.



I hope that some of you have an idea as to what this could be caused by, and what to do.



Thank you very much.