E87 Central locking problem!

[Ben256]

Hi,

When I unlock my car using the door unlock button only the drivers side door unlocks, the passenger side doesn't, it won't unlock using the inside door lock button either. It will unlock using the inside handle and then it will lock using any of the remotes, I had a look inside the door and noticed that a small white plastic cog had a piece missing... the problem is I don't know what this part is called and I don't have the car with me to take a picture, does anyone here have any ideas if I am able to fix it or if I will just need to swap the part????

Thanks in advance for the help.

[Craikeybaby]

Have a look on real OEM, you up your chassis number in and you will be able to view exploded diagrams for the whole car, which will get you to the part you need, with name and part number.