@Joejoe the key will open and the fob will start the scenic even if it’s done. It has to be placed somewhere specific, I think it’s just under the armrest.
Learnt this after a friend had a problem with starting her Mégane etech. Her dedicated key place was right in the centre console and a handy place to sit a phone, until you realise that the phones signal interferes with the car and fob, hence not starting lol. Tbf it looks like a phone charging plate.