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  #1  
Old 03-13-2016, 09:40 PM
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87 300D: Trying to identify plug on the driver side of the transmission pan

Anybody know the name of this part and/or its use?



Could it affect the transmission's performance if it's cracked like it is?

Thank you
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  #2  
Old 03-13-2016, 10:05 PM
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I think that is the neutral safety switch.
If your car is not starting in P try N.
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  #3  
Old 03-13-2016, 10:17 PM
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Might've answered my first question



What does the starter lock switch do? Should I replace it? Can't seem to find info on the part when I google it. Would appreciate any help on the topic. Thanks again
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Old 03-14-2016, 02:44 AM
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"Starter lock switch" is Mercedes-speak for "neutral safety switch" and is probably a direct translation of the long German word for the switch.

You "lock the starter" to prevent it from operating with the switch when the transmission is in a driving gear (Drive, Slope, Low or Reverse).

The switch also has an internal relay to power the backup lights when you shift to Reverse.

If you can't start the car in Neutral or Park, or if your backup lights don't work, then it is time to replace the switch.
The transmission will still function even if it is unplugged.
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  #5  
Old 03-14-2016, 08:05 AM
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Is it cracked, or just not engaged by the retaining ring? The retaining ring locks the connector when it is rotated.
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Old 03-14-2016, 10:10 AM
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Quote:
Originally Posted by Alec300SD View Post
The transmission will still function even if it is unplugged.
This is true, however, it will be very difficult to achieve forward motion, since you cannot start the engine if this is unplugged...

(Unless you jump out the starter signal in the engine compartment)
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Old 03-14-2016, 01:46 PM
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Cool, thank you guys for the info. The car starts in neutral and park, and no issues with the lights so I'm just gonna leave it for now. Might try to push it in a bit more. Thanks again for the replies.
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Old 03-14-2016, 01:48 PM
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Push it in, rotate the lock-ring to hold it in, should be fine.
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