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  #1  
Old 11-11-2007, 11:09 AM
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Join Date: May 2005
Posts: 9
No Park Engagement

Hi All:
When the transmission selector is put into park it maybe engages 1 in 10 times. This is on my 1980 450SL. If it does not engage the car can be rolled and an audiable click can be heard. Any ideas what the problem might be.
The transmission works great otherwise.
Thanks in advance for your input.
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  #2  
Old 11-11-2007, 12:05 PM
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Posts: 252
Quote:
Originally Posted by Shiner View Post
Hi All:
When the transmission selector is put into park it maybe engages 1 in 10 times. This is on my 1980 450SL. If it does not engage the car can be rolled and an audiable click can be heard. Any ideas what the problem might be.
The transmission works great otherwise.
Thanks in advance for your input.
Most likely is that the small pin used to lock the transmission has been sheared off. It's a very small pin and after years of being parked without the parking brake applied, it snapped. Maybe you've got a little stub left and that's just long enough that it sometimes catches.

From the sound of it (you're able to roll the car) you're still not engaging the parking brake. You should start, and you should keep doing it after you get the transmission fixed.
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  #3  
Old 11-14-2007, 01:20 PM
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Join Date: May 2006
Location: Atlanta, GA
Posts: 293
I had this problem when I first purchased my 250SL a couple of years ago. It turned out to be my shifter/linkage bushings. They can be a pain to get at but certainly not as expensive as the pin described above. Hopefully, it isn't that!
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J. P. Mose
1968 250SL
1970 280SE 3.5 Cabrio
1987 560SL
1990 560SEL
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  #4  
Old 11-18-2007, 01:01 PM
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Join Date: Mar 2007
Location: Houston, Texas
Posts: 211
Is the shifter loose when you move to drive and S or L? Shifter should "snap" into gears and be farily tight.
If so, would guess it is the gear shifter bushings....PAIN TO GET To, but should be more than about $100 to have fixed.
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  #5  
Old 11-18-2007, 11:59 PM
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Join Date: Aug 2007
Location: Houston TX/ Kent England
Posts: 46
My low milage 560SL will roll about a foot before engaging the 'park pin' does this mean I need new bushes too?
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  #6  
Old 11-24-2007, 01:37 AM
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Join Date: Dec 2003
Location: tampa
Posts: 255
Bushings

If you hear a clickety metallic noise when you move the shifter up and down the gears it is defrinetly the bushings ... don't ask me how I know.
Bad bushings will also give you a non-start condition in park, and sometimes the car will also roll when in park. Cars with this condition have been known to roll downhill (very ungood). Use the parking brake until you replace them.
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  #7  
Old 11-29-2007, 04:14 PM
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Join Date: Mar 2007
Location: Houston, Texas
Posts: 211
Rolls a foot? That is strange....all the Mercedes I have ever had tend to roll 2-3 inches before engaging in Park....never more than that.
Do you have any play in the shifter? The selector should hold tight to the shift gate and not move.
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