Our MK6 transit minibus (semi hi roof, MWB) has an annoying problem. The near side sideloading door often doesn't lock. I nearly bought a new central locking motor as I was convinced it had failed, but then it started working again, only occasionally though. I removed the post/lug attached to the body of the van, the thing the lock goes over, and cleaned the plastic off as it was all screwed up. This helped make the door open (manually) easier as it was stiff to open. I hoped that might solve the motor issue too. I can't afford to replace the motor (and no idea how!) unless it's absolutely necessary, so I wondered if anyone has any ideas before I go to that expense?
Many thanks