I just recently purchased an 83 300d and have been rooting through all the issues. Everything is sorted away, except for my power windows. When I excite the plugs that connect to the switches with a power probe, the windows go up and down no problem. At the fuse panel, though, I have no voltage. I have tried the switches out of my 82, and still no change. I have replaced all of the fuses with new ones, and everything else works just fine, but not the windows. Is there another relay somewhere, before the fuse panel, that I need to be aware of? Any thoughts?

__________________
1982 300d -Adolf- Got it for 500 bucks from a guy that thought he knew how to make biodiesel. Even the best diesels won't run on burnt french fry ends! 318,000 and counting
1982 300cd -Erwin- 107,000 miles! The most fun you can have in a diesel. Wrecked by an idiot, massive insurance payout for me. Tough to see you go, my friend.
1983 300d -Katrina- Another five hundred bucks. Straight outta New Orleans, by way of Maryland. Work in progress. 291,000 and counting

I'm working from memory. On a 126, there is a relay. The FSM has a wiring diagram of sorts. The 123 is likely similar. Perhaps someone will post that section. Did you use a meter to confirm that the fuses were good and working?

__________________
85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

There is a relay for the windows, and if none of them work, it could be the problem. It could also be that the ground is not good. Others can correct me if need be, but I think both relay and ground are behind instrument cluster. Here is diagram:

https://dl.dropboxusercontent.com/u/54783344/123%20window%20switches.pdf

From BW - confirms location:
http://www.benzworld.org/forums/w123-e-ce-d-cd-td/1389198-where-power-window-relay-300d.html#post2988430

__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Good to know. I will take a look this weekend.

__________________
1982 300d -Adolf- Got it for 500 bucks from a guy that thought he knew how to make biodiesel. Even the best diesels won't run on burnt french fry ends! 318,000 and counting
1982 300cd -Erwin- 107,000 miles! The most fun you can have in a diesel. Wrecked by an idiot, massive insurance payout for me. Tough to see you go, my friend.
1983 300d -Katrina- Another five hundred bucks. Straight outta New Orleans, by way of Maryland. Work in progress. 291,000 and counting

The Power Window Relay runs off of an 8 amp Fuse that is shared by some other Electrical Components.
If you still have your Fuse Chart attached to the Lid of the Fuse Box go down the list and you will find it.

__________________
84 300D, 82 Volvo 244Gl Diesel

The fuse diagram was different from the FSM on my 84SD and also was incorrect. Confirm the accuracy before relying on it.

__________________
85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Which one was correct; the Manual or the Fuse Chart?

__________________
84 300D, 82 Volvo 244Gl Diesel

He said he had changed all the fuses. But it's worth rechecking - Diagram says fuse 12:

__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5

In this case, the manual was correct. Three cars were involved early 84SD, late 84SD parts car and a late 85SD. The parts car apparently has characteristics of both years. Only 2 had the card (early 84 & 85). The part number of the physical fuse box is the same. Apparently the wiring is different.

__________________
85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Ok, pulled the cluster and replaced the relay and heard a noise from the window. Improvement at least. I pulled the switch from my 82 and plugged it in and everything works. I'm going to try and clean the switches and see what happens. Any hints or tricks?

__________________
1982 300d -Adolf- Got it for 500 bucks from a guy that thought he knew how to make biodiesel. Even the best diesels won't run on burnt french fry ends! 318,000 and counting
1982 300cd -Erwin- 107,000 miles! The most fun you can have in a diesel. Wrecked by an idiot, massive insurance payout for me. Tough to see you go, my friend.
1983 300d -Katrina- Another five hundred bucks. Straight outta New Orleans, by way of Maryland. Work in progress. 291,000 and counting

Clean switches, new relay, everything works great. Thanks guys. On a completely unrelated note, does anyone know where I can find the rubber plugs that go on the underside of the rocker panel? I pulled them all out to check for rust, and a lot of them tore. Looking to freshen them up. Thanks again!

__________________
1982 300d -Adolf- Got it for 500 bucks from a guy that thought he knew how to make biodiesel. Even the best diesels won't run on burnt french fry ends! 318,000 and counting
1982 300cd -Erwin- 107,000 miles! The most fun you can have in a diesel. Wrecked by an idiot, massive insurance payout for me. Tough to see you go, my friend.
1983 300d -Katrina- Another five hundred bucks. Straight outta New Orleans, by way of Maryland. Work in progress. 291,000 and counting