Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-02-2004, 10:20 AM
DIYer
 
Join Date: May 2002
Location: Columbus, OH
Posts: 44
Removing door lock when key won't turn?

The MB shop manual covers it, and there are plenty of posts here about how to remove the lock assembly, but how do you remove it when the lock won't turn.

I have an '89 300E with a driver's door lock that won't turn. I've tried lubricating it and have new keys, so the problem is probably in the tumblers. Proper removal requires the key to be turned 60 degrees in order to "unlock" the keyed connector to the latch assembly and pull the lock assembly. It is easy to do and I have practiced on the passenger door.

I finally removed the inner door panel to see what could be done, but could not find a way.

As far as I can tell from searching the archives, nobody here has posted a solution, although lock removal using a key that turns has been discussed many times. Any help appreciated.

__________________
Jim Wiggin
Columbus, OH
1989 300E

Last edited by whunter; 04-01-2006 at 01:23 AM.
Reply With Quote
  #2  
Old 03-02-2004, 12:20 PM
Registered User
 
Join Date: Jun 2000
Location: Saugus, CA USA
Posts: 2,033
Do you have any guns
Reply With Quote
  #3  
Old 03-02-2004, 12:41 PM
michael cole's Avatar
Registered User
 
Join Date: Apr 2002
Location: waterloo ontario
Posts: 730
clamp a large pair of vicegrips on the key and try turning very carefully.it goes with out saying do not break the key off!
Reply With Quote
  #4  
Old 10-28-2004, 08:48 PM
Registered User
 
Join Date: Sep 2000
Posts: 97
Help! I've got this same problem - key absoluetely will not turn--

Cannot remove lock without turning key.

I've gothe door panel off....there's got to be some way around this?

Thanks
__________________
1) 84 300SD 285K+ Miles (Ver Calif)
2) 84 300SD 175K+ Miles (Ver Federal)
Reply With Quote
  #5  
Old 10-28-2004, 10:18 PM
BrierS's Avatar
Registered User
 
Join Date: Jul 2003
Location: Charlestown, NH
Posts: 1,008
Aerosol graphite, slight wriggling with patience. I presume the pins are gummed and need to be worked free. In & out as well as slight turns left/right. You should find this will free the pins.
__________________
Steve
'87 300TD - 132K - Soon 4-Sale
'84 300D Turbo - 122K - Driving
'77 VW Type II - 77K - Restored
'08 250EX Ninja
English Bulldog (Brier) - My best friend. Passed away 12/02/04 while in my arms.
Reply With Quote
  #6  
Old 10-28-2004, 10:28 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
You hold a jig saw or orbital sander handle on the head of the key and the vibrations will aid in lining up the tumblers for the key to turn......
Reply With Quote
  #7  
Old 10-28-2004, 10:38 PM
BrierS's Avatar
Registered User
 
Join Date: Jul 2003
Location: Charlestown, NH
Posts: 1,008
Quote:
Originally Posted by Arthur Dalton
You hold a jig saw or orbital sander handle on the head of the key and the vibrations will aid in lining up the tumblers for the key to turn......
I love that one. The locksmith never mentioned that to me yet it would beat the heck out of what I stated with slight wriggling. I don't want to say that I want one of my keys to stick so I can try it however I can't wait until someone else's does.

This is one of the best reasons for these forums. Ideas.

Arthur,
Hope to bring the 300D Turbo over your way before snow flies. I need to purchase and use valve wrench set before feeling comfortable. You must know where a good burger/fry place is. Or a good sub shop.
__________________
Steve
'87 300TD - 132K - Soon 4-Sale
'84 300D Turbo - 122K - Driving
'77 VW Type II - 77K - Restored
'08 250EX Ninja
English Bulldog (Brier) - My best friend. Passed away 12/02/04 while in my arms.
Reply With Quote
  #8  
Old 10-28-2004, 10:44 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
<>

Well, I would Hope So..
I run the Lounge at the Pasta Loft/ Brick House Blues Room in town...

We have a Wood Fired Pizza Oven that is fab......
Reply With Quote
  #9  
Old 10-28-2004, 11:09 PM
Registered User
 
Join Date: Sep 2000
Posts: 97
Smile

actually figured it out.

Thanks for all the suggestions above!

1. Tried Grapphite spray already and Liquid Wrench--> no go. This has normally saved me in the past but something happened to it this time and even this didn't work.
2. Orbital Sander idea would have been interesting
3. Since I was changing it anyway, I tried brute forcing it with a flat head screwdriver in the keyhole...dumb idea didn't do anything except probably jam it further

Solution
1. From inside the door, remove entire panel (I assume you know how to do this already).
2. Unscrew side frame screw holding the outer lock in place..this will make it loose but it will not come out unless you can turn the key. If the key works, you can turn 60 degrees (clockwise?) and pull it out and skip to step 8.
2a. Remove screw holding the tip of the outer door lock in place (side opposite keyhole) from inside (theres a small hole to insert a long philips screw driver). I don't know if this step is essential, but it made it seem easier

3. Unscrew the four screws (two on side frame and two on inner screws holding the entire inner locking mechanism in place.
4. Now allow the inner lock mechanism to slide out towards the outside of the door and tilt it 60 degrees.
5. This should now allow enough jiggle room to turn entire outer locking mechanism out of the door and to 90 degrees (it will still be attached by the rod so be careful not to scratch the car!, use a protective cloth I suppose). You can't do this without loosening up the inner lock mechanism as in step 3.
6. Turn the outer lock and wiggle the inner lock, so that magic 60 degree angle is obtained and woila! your done
7. Screw inner lock back into place
8. Insert new outer lock apparatus with new key turned 60 so that it engages with the inner lock mechanism
9. Replace side frame screw
10. Close inner panel back together
11. Done!

I spent an hour frustrated until I discovered Step 3 was the crucial step...with the inner part loose, there's enough wiggle room (at least 126.120 300SD) for a jammed up lock to come out...



Hopefully this helps someone else (the owner of a car) out! Good thing to know that these cars are built solid..you can't brute force the lock mechanism open!
__________________
1) 84 300SD 285K+ Miles (Ver Calif)
2) 84 300SD 175K+ Miles (Ver Federal)

Last edited by 300sd2000; 10-28-2004 at 11:17 PM.
Reply With Quote
  #10  
Old 10-28-2004, 11:14 PM
Registered User
 
Join Date: Sep 2000
Posts: 97
A word of caution...if you're car is like mine (20+ years old) and the key is sticking, do not wait till the last minute. This job was a lot harder had I not proscrainated until the key mechanism was completely toast.

I managed to push this for several months, but would advise against this...

BTW: It cost me $184 for a universal replacement lock from the dealer. Original lock (custom order) to fit existing keys = $480! Fast lane had the universal lock for similar price, but I needed it faster so went to dealer. Only thing I lost is factory burgular alarm which had already quit working many years ago. ( I have an aftermarket burgular alarm).
__________________
1) 84 300SD 285K+ Miles (Ver Calif)
2) 84 300SD 175K+ Miles (Ver Federal)
Reply With Quote
  #11  
Old 11-09-2008, 04:42 PM
thayer's Avatar
Mercerator
 
Join Date: Oct 2008
Location: Mt. Airy, NC
Posts: 891
Wink Key works now

I took your advise, I did not wait until it was toast. I disengaged all the screws until the rear mechanism was loose and oiled it. Then I shut the door and played with the lock. It worked immediately. I guess it just needed someone to touch it. I really appreciate being able to lock the drivers door without crawling through the passenger seat. That was rough.
Next stop....Odo.
following....spider light for the Gear Stick and AC controls
After that....vacuum lock actuater.
then.....Keyless Entry
Will we get that far? oh yeah, we'll get that far.
Reply With Quote
  #12  
Old 07-25-2019, 09:46 PM
Registered User
 
Join Date: Jan 2019
Posts: 1
I bought my 300e with a stuck driver door lock. I used the trunk to lock and unlock the car for the last 9 months and finally got the time to work on it. 300sd2000, thanks for the procedure, just because it's been 15 years doesn't mean the advice isn't sound. It worked like a charm. Once I got the cylinder out I took it to a locksmith and they were able to get it working. They had to cut me a new key and put in some new lock wafers. I would have liked to try doing it myself, but sometimes you have to acknowledge when it's time to get some help.

I did learn something when I was putting the door back together. I wanted to make sure everything was functioning properly before putting the panel and trim back on the door but couldn't get the lock to engage. It took about an hour of carefully looking everything over to finally realize that the door has to be closed for the door lock to work properly. Hope someone else doesn't have to waste an hour to learn the same lesson!
Reply With Quote
  #13  
Old 07-28-2019, 02:33 PM
Registered User
 
Join Date: Oct 2016
Posts: 187
my two cents is that this occurred on my ignition after being totally unable to remove the cylinder with the release pins. Just didnt work and I think they were drilled out or damaged..Then the lock seized and I had to run drills through the key slot until it would turn with a screwdriver. It will now turn and start easily with just anything, a key or a screwdriver and I STILL cannot get the lock cylinder out. Im not driving this car so its not fixed, but its not that hard to drill out and turn the lock and dealing with it from this point is what would separate the You Tube mechanics from the real experts!
Reply With Quote
  #14  
Old 09-03-2019, 12:51 PM
Registered User
 
Join Date: Sep 2019
Posts: 2
Lock panel can't be removed if you try to remove it by own. So, consider trying to replace the lock panel with the help of locksmith.
Reply With Quote
  #15  
Old 09-03-2019, 12:51 PM
Registered User
 
Join Date: Sep 2019
Posts: 2
Lock panel can't be removed if you try to remove it by own. So, consider trying to replace the lock panel with the help of locksmith.

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page