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 12-24-2003, 06:51 PM
Registered User
Join Date: Dec 2003
Location: Encino, Ca
Posts: 27
Firming up front seats on 300SD?

The front seats in my -85 300SD feels a little soft and wobbly to me.

How is the best way to firm them up a bit and how much would it cost me??


-86 300SDL (148K), Pearl Black
-85 300SD (168K), Smoke Silver
Reply With Quote
Old 12-24-2003, 07:09 PM
lietuviai's Avatar
Registered User
Join Date: Mar 2003
Location: SW WA
Posts: 5,741
I wouldn't mind if my seats in my 300D were a little softer. You probably have a broken seat spring and there are many posts on the subject in this forum that you can find by doing a search.

Good luck.

84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
Reply With Quote
Old 12-24-2003, 07:33 PM
Registered User
Join Date: Sep 2001
Location: central Texas
Posts: 17,277
If you go to and plug in the specifics of your car you get a list of tsb's put out by Mercedes...

These are included in that list..they only give the titles free....

You could subscribe to Alldata... or you could find these bulletins somewhere else like the dealer and read them.... clearly you are not the first to complain about this...

DDAF91_10-U-310APR 97 Front Seat Cushion Has Insufficient Support on Turns
DDAF91_10-U-300APR 97 Front Seat Cushion Springs Feel Too Soft
DDAF91_10-U-300APR 97 Front Seat Cushion Too Soft/Bottoms Out
Reply With Quote
Old 12-24-2003, 09:58 PM
engatwork's Avatar
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 12,163
If you purchase a new bottom seat spring and install it you will wonder what took you so long. They changed the design and it makes all the difference in the world. The new springs are kinda pricey but in my opinion are worth every bit of it. Figure 2-3 hours to change it if you diy.
Reply With Quote
Old 12-25-2003, 10:49 AM
Registered User
Join Date: Dec 2003
Location: Encino, Ca
Posts: 27
Thanks. I will first have my mechanic look at it. If he can do it and it is not too pricey, I will let him have a go...

Otherwiser I will have to do it myself.

Where is the best place I can buy a new bottom seat spring if I decide to repair it myself?


-86 300SDL (148K), Pearl Black
-85 300SD (168K), Smoke Silver
Reply With Quote
Old 12-25-2003, 09:18 PM
Registered User
Join Date: Nov 2000
Location: Vernon, CT
Posts: 1,848
Since you are in California, there shouldn't be a problem finding a new spring for your car. Off the top of my head I would suggest Tom Hanson at Caliber Motors in Anaheim Hills, or Performance Products in Van Nuys. I don't think "Fastlane" at the top of the screen has it available. Essentially you would be replacing the entire bottom of the seat. It is a DIYer job, and when you go to pull the seat out of the car, you will need help because these seats are heavy. These are not your ordinary aluminum tubing framed seats. The word here would be STEEL and alot of it.
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member
Reply With Quote
Old 12-25-2003, 11:08 PM
Registered User
Join Date: May 2003
Location: Boonville Indiana
Posts: 2,342

The seat removal is really quite simple.....move the seat to the rear and you will need to remove 2-10mm bolts from the front of the seat, then you need to raise the seat as high as possible by pulling up on the side handle and maybe use a friend to push the seat toward the front of the car...once the seat is raised then move the seat forward as far as possible and you will have 2- 10 mm bolts at the rear of the seat rails to remove...then their is a additional bolt to remove from the seat guide that is bolted to the driveshaft tunnel just behind the front seat....push the seat guide all the way forward and you can pivot the seat 90 degrees and lift and pull it out the door. If you want extra room you can disconnect the door so it will open wider and or remove the door...My seat needs additional padding not springs...Jim
James A. Harris
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 10:36 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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