I am also having this issue from the last couple of days, but with "Right Rear Door". It is quite erractic in its behaviour, suddenly popping the message on MID while travelling and goes off after sometime. And depending on the warning light status the door locks goes on and off (I had set the Autoclose ON) and this is quite annoying when you are driving. The biggest problem is I can't lock the car with the central lock (so can't park in unsecured place) and manual overide is also doesn't seem to be working. Manually when I use the key to lock, only front right door gets locked. I did try disconnecting the battery and locking with the key manually, but that also doesn't seem to be working. Today I took the car to TASS and looks like they know the issue, but couldn't do anything, as they don't have the required spares (sensors) in stock. Surprisingly central locking worked when the SA tried locking and unlocking continuously. But I said I will wait for the spares and get this changed.