Hello everyone, I know is a very old thread but hopefully someone can help me:
So couple of weeks ago my e300 92 turbo diesel started to not start directly in P. So I came up with this topic and by pass the neutral safety switch…and then was starting right away, but for sure in all gears…
Yesterday I manage to change the switch…take the by pass..and still the car starts in any gear…(I try to install the new switch in the “same” position as the old one…)
Please help, will like to have the safety switch working properly!

When the neutral safety switch is bypassed there still could be an issue with the shifter bushings. Both the exterior ones and the ones at the base of the shifter stick. On my 84 300D those plastic/nylon bushings are cheap but a bit of work to deal with.

On my 84 300D is a method of lining up the neutral safety switch with the smoot end of a drill rod. I don't know if that method is used on your vehicle, and I cannot recall it from memory. There may be some threads on replacing the neutral safety switch on your year and model and there is definably some on my year and model.
DIY links:
Fast navigation Do It Yourself Links

In post 9 you can see where a shifter bushing at the base of the shifter moved.
shift linkage bushings

I have been on the forum since 2007 and I firmly believe the peoples repair struggles could be greatly eased if they bought the manuals for their vehicles. They save you much time, trouble and money.

You look in the manual and understand the way Mercedes wants it done and if there is some sort of special tool come back to the forum and see how people did it without the tool or made the tool.

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84 300D, 82 Volvo 244Gl Diesel