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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-18-2007, 10:29 PM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Power Front seat problem

The FRONT part of the driver's seat's bottom does not tilt up or down anymore. All other seat adjustments work fine.

When I attempt to either raise or lower the height, I can hear the appropriate electric motor working, but the seat won't adjust. Its now stuck in a position where it is extremely uncomfortable for me to drive.

What likely problem am I looking at?

__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #2  
Old 07-19-2007, 07:59 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Seat motor drive assembly...look for a used seat.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #3  
Old 07-19-2007, 11:02 AM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Why would I need to find a used seat? Is that problem not fixable? Could it be a gear, or a broken cable?

Can I somehow manually raise the front of the seat and leave it permanently in that position? The other. and more important seat adjustments work fine.
__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #4  
Old 07-19-2007, 12:09 PM
Registered User
 
Join Date: Jan 2005
Location: St. Louis Missouri
Posts: 473
I had the exact same problem with my 95 E320. The front of the seat is raised and lowered by a motor connected to a flexible drive shaft. The drive shaft very much resembles a speedometer cable--outer housing with flexible inner shaft. Inner shaft has square ends that engage motor on one end and drive unit on the other. In my case, the inner drive shaft slipped to far into the motor end. As a result, the square part of the inner drive shaft was no longer engaged in the drive mechanism. I inserted a 1/4 inch piece of piano wire into the motor drive end and then reinstalled the drive shaft. The 1/4 inch piece of piano wire prevents the inner part of the drive shaft from migrating to deep into the motor end. It has worked flawlessly ever since.

Figure 2 or 3 hours for this repair because the seat has to be removed. Once the seat is removed, the drive assembly is accessible from underneath.

Hope this makes sense.

J. M. van Swaay
Reply With Quote
  #5  
Old 07-19-2007, 12:42 PM
pberku's Avatar
Registered User
 
Join Date: Oct 2003
Location: Montreal, Canada
Posts: 737
Great answer. Very helpful.

Thanks
__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]
Reply With Quote
  #6  
Old 07-19-2007, 01:48 PM
DieselGuy53's Avatar
Registered User
 
Join Date: Feb 2007
Location: Maryland
Posts: 274
Yes it fixable. van Swaay is about correct. I had the same problem but it was on the forward/aft adjustment. Removed the seat, disconnected the by sliding out the circlip securing the cable specific to up/down motor. replace the steel cable (maybe cable sheared on one end inside the motor). Problem solved. Requires elbow greese too...

__________________
1987 300SDL 314K mi, counting; #22 Head
1999 E300Turbo 405K original miles
1997 E320 180K mi (Son's)
2002 ML320 (Son's)
1998 S320 140K mi (Son's) sold
1985 300SD 311K mi
1984 300D 324K mi (killed by a hit-n-run turd)
*************************************
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 03:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, 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