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

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-18-2006, 09:33 AM
Registered User
 
Join Date: Feb 2003
Location: New York
Posts: 161
window nightmare! Help!!

My rear window is stuck in the down position. I think the switch is faulty. I'm not able to get a new one at this time so I took apart the rear door to see if I could jump the motor. There is a green line and a black line going to the window motor. I put a hot line on each of these and nothing happened. Am I doing something wrong or is the motor burned out. I'm electrically challenged! Thanks

__________________
85 300TDT 456,000 orig. miles
Reply With Quote
  #2  
Old 11-18-2006, 09:42 AM
Registered User
 
Join Date: Jul 2004
Posts: 7,335
The connections to the window are enclosed in a black hose near the top of the door which then goes into the car's frame(it's about the size of a tennis racket handle). While the the offending window's door is open move this hose around with your hand while pressing the switch in the up position. Sometimes the wire shorts out here and just moving the hose around will get the window up. Two of my three w123's window problems were "solved" doing this.
Reply With Quote
  #3  
Old 11-18-2006, 09:46 AM
Registered User
 
Join Date: Feb 2003
Location: New York
Posts: 161
that didn't work. do you know how to jump the switch? I exposed the green and black lines.
__________________
85 300TDT 456,000 orig. miles
Reply With Quote
  #4  
Old 11-18-2006, 09:51 AM
Registered User
 
Join Date: Jul 2004
Posts: 7,335
If the door panel is off then you'll see the wiring for the window motor. I believe there are three wires going to the motor. One is ground... I dont know which is positive and which is neg.... but you could find out
Reply With Quote
  #5  
Old 11-18-2006, 10:04 AM
Registered User
 
Join Date: Feb 2003
Location: New York
Posts: 161
Unless I'm missing something, I only see a black and green going to the window motor
__________________
85 300TDT 456,000 orig. miles
Reply With Quote
  #6  
Old 11-18-2006, 10:09 AM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by shear2001 View Post
Unless I'm missing something, I only see a black and green going to the window motor
Correct. Two wires to the window motor.

You must put 12V on one of them and ground the other to a known good ground.

This will move the window either up.......or down........you don't know which. So, watch the glass carefully for any sign of movement when you touch the contacts. If it's the wrong way (down), immediately break the contacts and reverse the leads. The window should now go all the way up. Stop when it gets to the top.......don't keep power on a stalled motor or you'll damage the regulator.
Reply With Quote
  #7  
Old 11-18-2006, 11:00 AM
Registered User
 
Join Date: Feb 2003
Location: New York
Posts: 161
thanks, I tried that also. Nothing. Must be a burned out motor. thanks for your help.

__________________
85 300TDT 456,000 orig. miles
Reply With Quote
Reply

Bookmarks

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 06:33 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