p38 rear central locking

Hi, another problem! The rear central locking has given up on my p38, they lock when you push the buttons down manually but not with the fob, or the key. The fuel flap and tailgate are still working fine. Ive tried searching but getting hundreds of threads not related. Could it be both motors faulty? Thanks, Sam

Clean the units, maybe they need to be lubricated. I have to do mine cause the right hand doors does not lit the cabin light and the becm does not notice if the door has been opened. But after removing one to verify where the switch was... I have to take some tome to fix this issue.

Should i remove the lock mechanism then clean? Or do you mean just clean the parts you can see when the door is open? Sam