TWINGO III (2015), 71PS : door locking ?

Dear Twingo III friends, a friend has been driving a 71hp petrol for 8 years (Bj 2015). Since Sunday, however, the radio remote control FFB no longer works. I renewed the battery (CR2016, 3V) yesterday. The old one only has 2.4V . Nevertheless, without success, the central locking system no longer works. Until I have found the cold soldering point on the FFB board and soldered it, I would like to ask for your assessment: Is there any possibility with the Twingo III, if you like Fnet driver’s door, by pressing the central locking button on the dashboard once, to lock all the other 4 doors simultaneously? Then the driver’s door could be mechanically locked by key and everything would be good. PROBLEM: Without working TWINGO III radio remote control in the driver’s key obviously all 5 door locks will remain OPEN, can that be wanted ? On holiday e.g. this would be extremely unfavorable .. In our old Renault Espace III can also without FFB all doors one Thank you in advance for your kind help. H.