I just replaced the transmission filter in my 94 S500. Now when I put the car in gear, it does not move, and seems to just be in neutral.
One thing I did notice is that the old filter had 2 rubber plugs, 1 on each end
on a steel strip that ran through the filter. These plugs were not tight
against the sides of the filter. On the new filter, these plugs were tight
against the sides of the filter.
In thinking about it now, it seems like these plugs "should" be loose in
order for the filter to pick up the oil in the pan. Unless I find out something to the contrary, my plan is to take the pan back off and open those plugs in the the filter. That should let fluid go through the filter, which must be the problem here.
It seemed to be such a straight-forward R&R, it MUST be something basic like that.
Any ideas on what I may have done wrong???Thanks,
Barry

You got a weird filter. The plugs as you call them are actually weighted doors that allow the fluid in from the front or back. Take out the filter and put in a new one with the weights that are loose. They should slide back and forth. Fill up the fluid with 4 Qts, crank engine, and then the rest. Proper level when cold is at or below the BOTTOM line.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Thanks. I actually did slide the "doors" apart this morning, and that solved my problem. It kind of seems like design overkill on Mercedes' part, but I'm sure there must be a good reason to make something simple more complicated.

Thank you for your response. This is the first time I have tried this site. It is excellent!! I just bought this car a few months ago so am learning more about it each day. I WILL have more questions.
Thanks again.
Barry