Your Renault scenic has automatic gear box it will not change gear it will only go into third gear only the D lamb is blinking and transmission lamb turn on?

its a fail safe mode. possibly the multifunction sensor is not working well or is damp. try drying it up and use the electronic tool to reset it. there is a temp solution to override it, via a button located near the gear lever. plse check with the mechanic. other reasons might be the gear linkage or the gearbox.