Driver side door can't lock/unload w204

Hello Mr. Senior Leigh,

Well my wife 2010 C350 W204 gives me a few issues. And after I get them all fix. And now another issue.

Today we just found out the drive front door will not lock/unlock with keyless entry and or pressing the key fob.

The other 3 doors no problem. If I put my ear close to the door. I hear some motor noise when I press the key fob and that about it.

Now we have to open and lock the door with the key and no other method/way. I look at some video and is very hard to replace the actuator. Some say just an option to get an after market Actuator just under $ 20.00 and connect and mount it inside the door panel. Cut 2 wires that give power to the oem actuator and connect to after market one and done. Do you think this is a good cheap option to get this fix. And also how to lub the drive power seat. It sound louder then I expected when I most the seat back and fore.

Can I reach the gear under the seat or just spray some greese on the seat tract.

Thanks !

Spencer Chan

2 Comments

spencerchan300

Jul 12, 2022

Thank you Sir !

Senior Leigh | 老李

Jul 11, 2022

Hi Mr. Chan,

Since you can hear the motor noise while pressing the key fob, the motor is good on most chances. In my experience, there would be stuck like a lack of lube. I used to fix the rear side door curtain by lubing the motor gear. I upload the WIS for your DIYs working.

And you might lube the gear under the seat to see if the noise disappears.

Remove-install front door lock

.pdf

Download PDF

Remove-install door module