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1991 300CE
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32 Posts
Discussion Starter · #1 ·
hello benzworld

my car is a 91 300CE.

the problem with my car is that it rarely starts in park, no crank, no nothing. so i would always have to shift to neutral to get that baby started. i noticed this when my shifter became a little loose when shifting. it didnt have that tight feeling anymore. when it would be in gear, the shifter would slightly move like a bushing is missing? iono jus a thought

a fix i read from another thread is replacing the neutral safety switch

are there any other parts recommended to change in the shifter to impove/fix this problem?

thanks in advance for any help and info
 

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96 C280, 92 300E
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22 Posts
I had the same problem and, it's one that gets worse without fixing it. My car would not start in park, so I started having to start it in neutral. Within a month after the first problems arose, I couldn't even get it to start in neutral either. I replaced the neutral safety switch and this remedied the problem.
 

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96 C280, 92 300E
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No problem. If you have any questions about performing this procedure, feel free to ask. I got it done in about 2 hours. Not sure if you have looked at it underneath the car, Its in a tricky spot. Try to find someone with small hands to help you with this one.
 

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1991 300CE
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32 Posts
Discussion Starter · #5 ·
I finally have time to fix this problem, been driving my other car for these past few months

decided to snap a pic underneath and by the looks of it, the shifter bushing is gone. bought the part and it will be replaced




I havent actually jacked up the car to examine anything, but I was wondering if I can get an idea on where the neutral safety switch is located? tight squeeze? difficult to replace?
 

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Premium Member
About a dozen 1988, 1989, 1990, and 1991 sedans, wagons, 4Matics and 1 coupe
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5,512 Posts
The bushing will probably fix the starting problem. It will definitely fix the sloppy shifter. The park/neutral switch is attached to the left side of the transmission. Actually, it's at the other end of the rod shown in you pic.
 

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1991 300CE
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32 Posts
Discussion Starter · #7 ·
just finished changing the bushing, shifter doesnt have the sloppy feel to it anymore. saw the NSS but looks cramped to remove

saw another bushing i need to replace next to the nss
 

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About a dozen 1988, 1989, 1990, and 1991 sedans, wagons, 4Matics and 1 coupe
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5,512 Posts
For that one you have to loosen/remove the 10mm nut that holds the clamp bolt and shift arm to the side of the trans. Not hard at all but access is tight.
 

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1991 300CE
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32 Posts
Discussion Starter · #9 ·
For that one you have to loosen/remove the 10mm nut that holds the clamp bolt and shift arm to the side of the trans. Not hard at all but access is tight.
the bushing I changed fixed the sloppy shifter, but still does not start in park :crybaby2:

since that didnt fix the starting problem, I will be purchasing the NSS and possibly install it next week if I have time

thanks augapfel for the responses :thumbsup: appreciate it
 

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1991 300CE
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32 Posts
Discussion Starter · #10 ·
still waiting on my NSS to come in the mail

but in the meantime ive been looking for tutorials on replacing the NSS.

came across this step and was wondering will I be able to remove bolts 55 in the picture below without lowering the transmission? seems like a really tight spot



and again, thanks for your inputs guys
 

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96 C280, 92 300E
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If memory serves me correctly, you should be able to get that bolt out of there with either a combo wrench or a small wratchet (1/4 in drive). Also be sure that you get the NSS in the correct position before installing it. I played with the new one before installing it just to understand the operation of the part and that actually helped me when installing it. I did this fix without dropping the transmission and it was a little frustrating to have to work by brail up under there, but it can be done.

Another thing, after pulling out the old NSS, compare it with the new one before installing it. The bad one on my car had a real sloppy movement to it compared to the new one that operated real crisply when I moved by hand.
 

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1991 300CE
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32 Posts
Discussion Starter · #12 ·
^^^thanks bondtanner for the responses

ill be sure to compare switches and understand how the NSS operates
 

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1991 300CE
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32 Posts
Discussion Starter · #13 ·
finally changed my NSS yesterday and nooo more issues in starting in park

shifter has no sloppy feel anymore and feels brand spankin new

thanks to everyone that helped contribute
 
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