Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 05-19-2002, 11:30 PM
Registered User
Join Date: Oct 2001
Posts: 283
rear wipers always on, 300TD

Of course, it has to happen out of town when I'm without my tools.
Rainy Friday and Saturday, and I have been using my wiper on the TD, generally on intermittent. I got into the car on Saturday afternoon and the wiper came on with the key, and no fiddling with the buttons could shut it off.
It's going to be a day or so before I can test the system, but if anyone has had this, and can give me any advice, I'd appreciate it.

1985 300TD

1985 300TD 4-speed 212K
1992 400E 343K
2001 E320 72K
Reply With Quote
Old 03-19-2003, 05:19 PM
Registered User
Join Date: Dec 2002
Location: Suburban NYC
Posts: 57
I have just the opposite problem. I get 12 volts on two pins in the gate and a good ground, but wiper does not work. Something must be providing 12 volts to the wrong connector ring inside the wiper. I've had one apart. Or perhaps the switch is permanently on. Unfortunately the fuse also controls other electrical functions. Someone pulled the plug on the wiper motor inside the gate. perhaps this is the reason?
If you find out, please post because the problem is driving me nuts!
Stage Wizards Lighting and sound designer
1981 SD 328,000
1985 300TD, 266,000
1984 300 TD, 267,000
Reply With Quote
Old 03-19-2003, 05:41 PM
surfblau's Avatar
neue Dieseler
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
I think that there may be two different wirings

I grabbed a rear ww motor from a junkyard (from a non-turbo TD) and the motor appeared to be wired slightly differently than the motor for my 84 300TD. One does not appear to be plug and play compatible with the other.

Fortunately, all I needed was the transmission.

If yours is stuck on all the time, it seems worth taking oneor both of the switches from the consol and disconnecting them. If that doesn't work, I guess you could try the fuse. Other than that, you will probably be opening up your tailgate...

84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double
Reply With Quote
Old 03-19-2003, 10:20 PM
Registered User
Join Date: Jan 2002
Posts: 18,355
When mine sticks on, the button is stuck in. Use a knife or thin instrument to see if you can pop it out.
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
Old 03-20-2003, 07:18 AM
Registered User
Join Date: Dec 2002
Location: Suburban NYC
Posts: 57
The replacement was plug and play (after an hour's work to remove and replace the old motor.
But the junkyard is shipping me a new motor gratis. Perhaps that is plug and play. And maybe I can cobble enough parts from the two dead motors to make one that works.
By the bye - inside the transmission, where the contacts are, the electrical connections are covered in heavy grease. Would that interfere with the current? I know the worm assembly should be lubricated, but I would think that grease would make a poor connection.
Stage Wizards Lighting and sound designer
1981 SD 328,000
1985 300TD, 266,000
1984 300 TD, 267,000
Reply With Quote
Old 03-20-2003, 10:35 PM
190D22's Avatar
Driver's Side lights
Join Date: Apr 2002
Location: Columbus, Ohio
Posts: 876
If there is grease on the electrical contacts, clean it off. Grease (and oil) does not conduct electricity.

1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

Play guitar? Go to for free online lessons!
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:07 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page