At my friend’s Berlingo Advance (b9) the locking cylinder in the driver’s door and the car can’t be opened again and again with the key (no radio remote control, only central locking). Since the locking cylinder of the rear door is completely oxidized and can only be turned in the direction of the passenger door, this is not nice. Yesterday we removed the cylinder. This is easy: a Torx 20 screw in the door (behind the round adhesive pad) bi I had imagined that it would be easy to pull out a possibly locking attachment (if necessary all – nobody knows). Unfortunately, the whole thing is a closed housing in which an opening is probably not intended. One would have to drill out four pins and could then probably open the housing – just how to close it again? A bath in petrol and multifunctional oil did bring a certain improvement, a Can anyone give advice?