Door Lock Actuator Latch

[VW VR6]

Hi
My three Door Lock Actuator Latch stop working from remote control (can not unlock 3 doors).
I can unlock from inside the car by hand only and after that is working until I lock them again.

Try to find it on E-bay, but there is a lot of different parts number:
Front Right - 3C1 837 016 A (B) - 8J1 837 016 A - 3CD 837 016 - all is 7-pins
Rear Left - 8KO 839 015 - 3C4 839 015 A (B-C-D) - 3CD 839 015 - all is 8-pins
Rear right - 8KO 869 016 A (B-C-D-E-F) - 3C4 839 016 A (B-C-D) - 3CD 839 016 - all is 7-pins

I am confusing about the first 3 letters and numbers and also about the following letter at the end (A,B,C...)

Any help, please.
Thanks

My car is VW Passat wagon R36 2009

[kamold]

Front
3C2 837 015 A Door lock left - rhd
3C2 837 016 A Door lock right - rhd

Rear
3C4 839 015 A Door lock left
3C4 839 016 A Door lock right

[VW VR6]

Thanks.
Do you have any info on what is different between the first 3 letters/numbers - 3C2/3C1/3CD/8KO...

[kamold]

It means its for a different car.
3Cx is B6 Passat (x=variant)
8Kx is Audi A4 B8 etc
I can't comment on cross compatibility. If it's a different part number it generally means its a different part unless it's a supercession part. ETKA did not list any supercession part numbers for those listed above.

[VW VR6]

Thank you so much Kamold.

[passat123]

Just had the same issue..

Can open the rear passenger door from inside then outside afterwards but once locked with the remote, I can't open the door from outside unless I do it by hand from inside first..

I have a B7 Passat.

Sent from my SM-N950F using Tapatalk

[VW VR6]

I here door lock actuator is a common problem with all VW.

[passat123]

Could you please let me know once you swap the actuator if it resolves the problem

Sent from my SM-N950F using Tapatalk

[VW VR6]

I will no problem. But first I will try to fix the rear left and right.

[VW VR6]

Update:
Rear left part no. 8KO 839 015 - 7 pins (E-bay $62.29) FIXED
Rear right part no. 8KO 839 016 - 7 pins (E-bay $67.00) FIXED
Front right part no. CZ 3C2 837 016A - 9 pins (Local wrecker $65.00) FIXED

Once more THANKS to all members of the forum who helped me.