The two drivers side windows on my 1981 300d will not go down. When I press the switch both motors make noise. I can adjust the front window by grabbing it between my palms. Any trouble shooting ideas? I have removed the door panel from the front door but am not sure where to go from here.

it could be the track slider, it is alittle plastic piece underneath the window itself, connected to the slider arm.

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82' 300SD

Its not a hard job at all to replace the plastic sliders. The kit comes with everything you need.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

Sounds like a slider problem. HOWEVER, first time I have heard about a window problem on a 123 other than a switch. Diesel Giant is a help, yet, remember, they are trying to sell you something.

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83 SD

84 CD

I think you need to take the door panel off and take a look.
Telling us "My window won't go down" isn't telling us enough.

Danny

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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...in my '85, the rivets (2 of them) holding the window regulator together sheared off. I was able to replace the rivets but the soft metal (I used a "repair" rivet) sheared after a couple of weeks. You can also have the part welded. I ended up replacing the regulator, about $125.

Take the door panel off (carefully) and see what's inside.

See my thread Something went "POP" in my door
for information and pictures.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I had the gears on my regulator strip off. did u try to open them when they were frozen, that could have stripped the teeth off.

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Trying to keep Jersey Fresh

1995 E300D 384,000,(Betty White) part time greaser, lots of new parts
2004 Ranger XLT
2000 Chocolate Lab-Bad Quarter Panel, lots of miles