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  #1  
Old 03-05-2001, 11:24 PM
Snow bum
 
Join Date: Jan 2001
Location: Here and there . . .
Posts: 238
None of my keys will completely slide into the lock on the passenger door of my 300SD. The driver's door and trunk locks work fine. On the passenger side the key will slide about 3/4 in, but no further. This makes it quite difficult to be a gentleman and open the door for my passengers. I would prefer not to replace the lock cylinder, and by that I mean if that is what I have to do it will remain unfixed. Any suggestions?
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Ben

The MBs:
1976 300D (W115) - 330K and still going (sort of)
1991 300D 2.5 Turbo - Sold at 221K
1983 280SEL - Sold at 206K
1981 300SD - Sold at 232K
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  #2  
Old 03-05-2001, 11:31 PM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Lubricate?

I don't know if you've tried it already, but it's worth a try.
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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #3  
Old 03-05-2001, 11:37 PM
Snow bum
 
Join Date: Jan 2001
Location: Here and there . . .
Posts: 238
What do you suggest lubricating with? I have been hesitant to spray stuff into my door. I thought about using WD40, but I don't want it to seep past the cylinder and onto the back side of my interior door panel.
__________________
Ben

The MBs:
1976 300D (W115) - 330K and still going (sort of)
1991 300D 2.5 Turbo - Sold at 221K
1983 280SEL - Sold at 206K
1981 300SD - Sold at 232K
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  #4  
Old 03-05-2001, 11:40 PM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
I heard that you shouldn't use WD-40.
But I have been using this stuff (on antenna, wiper, etc) and it seems to work well... it lubricates nicely and does not attract dirt. I believe it's called Teflon or something along those lines. But it is a spray. Just use it sparingly I guess? Or I heard someone used 3-in-1 household oil once and it worked well. I am sure a little will go a long way. Good luck.
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #5  
Old 03-06-2001, 12:58 AM
Robert W. Roe's Avatar
Registered User
 
Join Date: May 1999
Location: Lehigh Valley PA
Posts: 1,322
I've used a spray called "Lock-ease" that is similar to WD-40 but contains graphite also. The lubricant in WD-40 is notoriously short-lived. It's really more of a water displacer and penetrating lubricant than a long-lasting high-quality lubricant. I'd be less afraid of Lock-ease than using an actual oil in my lock cylinders.

If the key isn't going in, I suspect that the lock tumblers are jammed or otherwise messed up.

The dealer can order you a new door handle for about $120 and you get a new key. Give them your VIN.

My 1983 SD needed the driver's door done, so it was less a matter of chivalry and more of a pain in the butt to get into the car.

Hope this helps,
Bob
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Bob Roe
Lehigh Valley PA USA
73 Olds 88, 72 MB 280SE, 78 Datsun 280Z, 71 T-Bird, 72 Olds 88, 83 Nissan Sentra, 85 Sentra, 73 230.6, 91 Integra, 83 300SD, 91 Volvo 940GLE wagon, 84 300SD, 95 Subaru Legacy L wagon, 02 Mountaineer, 91 300TE, 08 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon all gone... currently
2007 Honda Odyssey Touring, 2011 Honda Odyssey Touring
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