M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

MB Guru Opinions needed for heated seat issue

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Oct 6, 2007 | 07:10 PM
  #1  
HumblePie's Avatar
Thread Starter
Member
 
Joined: Mar 2003
Posts: 89
Likes: 2
2005 E500
MB Guru Opinions needed for heated seat issue

Hi all. I need some assistance troubleshooting an issue with my wife's 02 ML320. We had to take the truck in about 4mo ago because the driver's side seat was getting WAY too hot. They replaced the seat and things semed to work great. Day before yesterday I was taking her truck in to get an estimate for a radiator hose replacement and noticed that the heated seats did not work. Both driver's and passenger's seat warmers click on (to both positions) but they never get warm. I thought that the fuse was probably blown so I did a quick check and found out that it was just fine. The folks at my local stealer wanted ~$180 (1.5 hours) to troubleshoot it. When I asked if they could just hook it up to the computer to check for any error codes, I was told that any hookup to the computer is automatically billed one hour labor. Nice...

Anyone have any ideas I can look into to try and troubleshoot this on my own?
Reply
Old Oct 6, 2007 | 08:39 PM
  #2  
sosh's Avatar
MBWorld Fanatic!
 
Joined: Nov 2001
Posts: 4,260
Likes: 6
From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Lack of heat in the seats is possibly caused by a bad relay which may be found in the electronics box on the drivers side under the hood. Other causes are bad heat pads in the seat which can be replaced. The high heat you experienced could also be caused by the relay hanging up or a short in the heat pack in the seat. You mentioned that you were getting an estimate for a radiator hose, I guess if its too expensive you will tape it up!!?? Why not just have it changed out and pay the bill.
Reply
Old Oct 7, 2007 | 12:25 AM
  #3  
HumblePie's Avatar
Thread Starter
Member
 
Joined: Mar 2003
Posts: 89
Likes: 2
2005 E500
I am taking the truck in for the radiator hose replacement ($140 + tax) to a local garage. MB wanted $460 for the exact same job which is a complete rip off for a simple hose replacement.

The $180 for the heating seats was just to diagnose the problem and not for the repair. The guestimate for repairs was $1500-$2000. If it does turn out to be that significant of an issue, we'll be trading in the truck for a new vehicle. For us, it's not worth it to sink another $2k into a 5yr old vehicle with 75k mi on it. It would be better to upgrade the vehicle to a new one which is under warranty and can offer my wife and I peace of mind.
Reply
Old Oct 11, 2007 | 01:45 AM
  #4  
Marshall_K's Avatar
Member
 
Joined: Jul 2007
Posts: 232
Likes: 0
02 ML320 Sport, 04 350z,06 E350 4matic
Any idea on the cost of the heat pads?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 03:37 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE