2008 C300 driver door lock

Oct 8, 2013 | 10:46 AM

tw1nny03

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2008 C300

2008 C300 driver door lock

I have a 2008 c300. My driver's door wont lock with the remote or manually with the key. All my other doors lock when i use the remote.

I cant push or pull down the door pin either. I've also used the lock button on the drivers door and it still wont move the door pin up or down.

Is this an easy fix? Any had this problem before?

Oct 8, 2013 | 11:00 AM

tw1nny03

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2008 C300

Update. I can push down the door pin with the door closed. So the problem is getting the key and the remote to unlock/lock the door.

Oct 8, 2013 | 11:54 AM

vic viper

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S213

Could be door control unit or door lock module

Oct 8, 2013 | 12:36 PM

mb techman

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Last edited by mb techman; Sep 23, 2014 at 05:59 PM.

Oct 8, 2013 | 12:43 PM

tw1nny03

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2008 C300

Thank you for the replies guys!

Is this an easy fix or a job for the service department? How much would this cost to fix?

Oct 8, 2013 | 12:51 PM

mb techman

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Oct 8, 2013 | 12:59 PM

tw1nny03

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2008 C300

Im definitely out of warranty. Man... there goes my fishing funds!

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Oct 8, 2013 | 01:02 PM

tw1nny03

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2008 C300

Just went to my car. The lock/unlock buttong on my drivers door works. I can lock and unlock all the doors except the drivers door. It seems like the problem lies with the driver door's lock pin.

Oct 8, 2013 | 01:03 PM

#10

tw1nny03

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2008 C300

My guess is the driver door's lock actuator. Is that easy to change? Any hows to's with pics on this DIY?

Oct 8, 2013 | 11:14 PM

#11

Amir_AMG

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2000 SL500

+1 on door lock actuator, had it happen on both my bmws. DIY took about 1.5-2 hours. I have never done it on the w204 however

Oct 9, 2013 | 08:23 AM

#12

mb techman

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Oct 9, 2013 | 10:20 AM

#13

tw1nny03

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2008 C300

Looks like I'll have to bring it to the dealership. How much do you think they will charge?

Oct 9, 2013 | 10:34 AM

#14

mb techman

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Oct 9, 2013 | 10:52 AM

#15

vic viper

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S213

If you know your way around a car you can replace it yourself,
if a dealer charges you 4 hours for this job then youre getting ripped off.

Oct 9, 2013 | 11:09 AM

#16

mb techman

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Oct 9, 2013 | 11:25 AM

#17

tw1nny03

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2008 C300

Thanks!

I got a qoute for a shop that deals with MBs. $200 in labor. Does anyone have the part # of the driver door actuator?

Oct 9, 2013 | 01:13 PM

#18

vic viper

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S213

Give me your VIN and I can check

Jan 11, 2014 | 02:20 AM

#19

Kenneth Wang

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2008 c350

Quote:

Originally Posted by mb techman

the time consuming part is the drilling out of the rivets.

the exterior door handle and lock cylinder have to come off, the interior door panel comes off. then about 10 rivets drilled out. then the door lock actuator comes out when removing the window regulator carrier. actuator is held on with 3 plastic rivets. replace the actuator. then the other time consuming part comes when you have to rivet the regulator back in place.

all in all youre looking at about 3-4 hours including the diag. time. at least thats probably what the dealer will charge you.

Can you explain more in detail on what to do after the 10 rivets are drilled out? I'm stuck after that. I can't figure out how to remove the door lock actuator. Thank you