M-Class (W166) Produced 2012-2015

ML350 bluetec 2012 (HELP)

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old May 3, 2019 | 07:22 PM
  #1  
southflorida69's Avatar
Thread Starter
Newbie
 
Joined: Apr 2019
Posts: 4
Likes: 0
From: South Florida
2012 ML350 bluetec
ML350 bluetec 2012 (HELP)

Hello , I am a new member here. I live in south florida. I am an Ac contractor and currently own 3 sprinters 2500 and a Ml350 bluetec.

We purchased the 2012 Ml350 as a certified pre owned with 32k on it. The vehicle has been great for the first year and half and after that it's been a nightmare .
just outside of the warranty expired the vehicle started leaking oil in the driveway, we visited the dealership and it turned out to be the oil cooler seal according to the service center,
Mercedes gave a quote of 2k-2500 to repair and then changed it to 3600 .
We got a second opinion for verification and received same diagnosis with price slightly lower but felt more confident with the dealership due to a 2 yr warranty.

The repair went from a 3 day job and turned into a 15 day job with no explanation from the dealership other than to say they had a problem with a bolt and wanted to add
another 500 to the job after not contacting us to provide any pre estimate or update. Several call were made to them through course of service with no update or return calls.
We picked up the ML and its seemed fine for 8 months no issues or leaking. The ac however has been working intermittently on the drivers side.
Something with the damper I believe is cutting off the air on the drivers side but then returns to normal.

Moving forward to 2 weeks ago , my wife was on her way to work and the car started to smoke she turned the ac off and the smoke went away, She smelled an electrical burn.
She took it to the dealership expressed her concerns and they looked at it and stated there’s a minor leak in the transfer case output shaft seal and the ac is probably just low on
refrigerant. They suspected oil from the transfer case dripped onto the exhaust and smoked a little? The smoke emitted from the passenger side and then stopped when she turned off the ac.
We have not seen any oil stains in driveway and we have a driveway with no stains.

We bit the bullet and agreed to a 2000k repair, I was told in the beginning the repair cost was high because they had to drop the transmission.
They made the repair on the 22nd of April, we picked it up and noticed the next day a thunking noise on initial acceleration from a stopped position.
We returned the vehicle to the Mercedes service and now they have stated we need motor mounts. We were quoted 1500. and now 1800.00 plus tax but mercedes
will pick up most of the cost and we get to pay $500.00

They have had the car now for more than a week first due to parts being delayed, then they needed the transmission mount and now it needs exhaust clamps?
Does this sound legitimate? Still no car and more discovery or maybe they just don’t know whats wrong with it and are just guessing at this point?

Im sending another email to MBusa but they declined any goodwill assistance on the oil cooler leak, transfer case leak and just now they are helping with this repair.
We have put 7k in repairs in less than a year and are dreading if anything else goes wrong.
It seems like the 2012 Ml350 is plegged with issues and should be considered a LEMON.

Any advice would be greatly appreciated.

Last edited by southflorida69; May 4, 2019 at 02:10 PM. Reason: adding photos
Reply
Old May 3, 2019 | 08:53 PM
  #2  
Strigoi's Avatar
MBWorld Fanatic!
 
Joined: Jan 2010
Posts: 3,249
Likes: 257
From: Richmond, CA
2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
Welcome to the forum!

I'm of no help when it comes to your issue, but the people in the W166 section might be able to help you out. Repost your thread there and you may get some help.

https://mbworld.org/forums/m-class-w166-149/
Reply
Old May 3, 2019 | 11:13 PM
  #3  
chassis's Avatar
Out Of Control!!
MBWorld Ambassador

5 Year Member
Liked
Loved
 
Joined: Sep 2018
Posts: 14,666
Likes: 4,569
From: unbegrenzt
2017 GLE350 4MATIC
Welcome! Please post a photo of your M-B.
Reply
Old May 4, 2019 | 02:22 PM
  #4  
MJ50's Avatar
Super Moderator
MBWorld Ambassador

20 Year Member
Liked
Community Favorite
 
Joined: Jul 2003
Posts: 22,056
Likes: 972
From: MBworld
bone stock E55 AMG
moved to W166 forum...
Reply
Old May 4, 2019 | 02:40 PM
  #5  
southflorida69's Avatar
Thread Starter
Newbie
 
Joined: Apr 2019
Posts: 4
Likes: 0
From: South Florida
2012 ML350 bluetec
Hi, Im trying to sort out where to post photos, Do I need to create an album?
Thank in advance for any help .
Reply
Old May 4, 2019 | 11:23 PM
  #6  
chassis's Avatar
Out Of Control!!
MBWorld Ambassador

5 Year Member
Liked
Loved
 
Joined: Sep 2018
Posts: 14,666
Likes: 4,569
From: unbegrenzt
2017 GLE350 4MATIC
No, you can upload an attachment (photo) directly in a reply.
Reply
Old May 5, 2019 | 09:51 PM
  #7  
kombifan's Avatar
MBWorld Fanatic!
 
Joined: Nov 2017
Posts: 1,218
Likes: 149
From: Bethesda, MD
2010 Mercedes GL450; 2000 Mercedes ML55 AMG; 2016 VW GLI SEL Stick!!!
Originally Posted by southflorida69
Hello , I am a new member here. I live in south florida. I am an Ac contractor and currently own 3 sprinters 2500 and a Ml350 bluetec.

We purchased the 2012 Ml350 as a certified pre owned with 32k on it. The vehicle has been great for the first year and half and after that it's been a nightmare .
just outside of the warranty expired the vehicle started leaking oil in the driveway, we visited the dealership and it turned out to be the oil cooler seal according to the service center,
Mercedes gave a quote of 2k-2500 to repair and then changed it to 3600 .
We got a second opinion for verification and received same diagnosis with price slightly lower but felt more confident with the dealership due to a 2 yr warranty.

The repair went from a 3 day job and turned into a 15 day job with no explanation from the dealership other than to say they had a problem with a bolt and wanted to add
another 500 to the job after not contacting us to provide any pre estimate or update. Several call were made to them through course of service with no update or return calls.
We picked up the ML and its seemed fine for 8 months no issues or leaking. The ac however has been working intermittently on the drivers side.
Something with the damper I believe is cutting off the air on the drivers side but then returns to normal.

Moving forward to 2 weeks ago , my wife was on her way to work and the car started to smoke she turned the ac off and the smoke went away, She smelled an electrical burn.
She took it to the dealership expressed her concerns and they looked at it and stated there’s a minor leak in the transfer case output shaft seal and the ac is probably just low on
refrigerant. They suspected oil from the transfer case dripped onto the exhaust and smoked a little? The smoke emitted from the passenger side and then stopped when she turned off the ac.
We have not seen any oil stains in driveway and we have a driveway with no stains.

We bit the bullet and agreed to a 2000k repair, I was told in the beginning the repair cost was high because they had to drop the transmission.
They made the repair on the 22nd of April, we picked it up and noticed the next day a thunking noise on initial acceleration from a stopped position.
We returned the vehicle to the Mercedes service and now they have stated we need motor mounts. We were quoted 1500. and now 1800.00 plus tax but mercedes
will pick up most of the cost and we get to pay $500.00

They have had the car now for more than a week first due to parts being delayed, then they needed the transmission mount and now it needs exhaust clamps?
Does this sound legitimate? Still no car and more discovery or maybe they just don’t know whats wrong with it and are just guessing at this point?

Im sending another email to MBusa but they declined any goodwill assistance on the oil cooler leak, transfer case leak and just now they are helping with this repair.
We have put 7k in repairs in less than a year and are dreading if anything else goes wrong.
It seems like the 2012 Ml350 is plegged with issues and should be considered a LEMON.

Any advice would be greatly appreciated.
Really sorry. Wish you had reached out to us before your cpo expired.
The cpo would have helped a lot with bluetec diesel issues.

Unfortunately, you have a lot of issues still ahead of you.

The best bet for the long term is to get a tune from green diesel engineering or one of the other companies recommended on the diesel forum.
You'll have to find out and decide which parts you want wanted deleted or tuned out.

If not, and the residual is good. Yiur best bet will probably be to get out early. Perhaps mb or your dealer can give some trade in assistance against another cpo model.

About your sprinters. Best to extend any factory warranty if stil applicable, try to cut in half the reccommend oil change interval, perhaps invest in a oil catch can, and look up the larger oil filter kit.
Reply
Old May 5, 2019 | 09:59 PM
  #8  
kombifan's Avatar
MBWorld Fanatic!
 
Joined: Nov 2017
Posts: 1,218
Likes: 149
From: Bethesda, MD
2010 Mercedes GL450; 2000 Mercedes ML55 AMG; 2016 VW GLI SEL Stick!!!
If you do plan on keeping the car, and youre no longer in warranty. Do find an independent sprinter diesel shop in your area, the prices you mentioned are a bit on the high side, but considering future repairs, you will probably haVe some adbkue heater and dpf repairs in the future unless you use a tune.


http://www.stephensservice.com/bluet...ssuesproblems/

Please read this, it will give some clarity to the issues you are facing.
Also it will help prevent any catastrophic issues you might face with your sprinters, as they are vital to your business.

Again, if you have any questions please do reach out to us; and for more specific diesel advice the diesel forum is great!
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

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

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old May 6, 2019 | 05:51 AM
  #9  
peter2772000's Avatar
MBWorld Fanatic!
5 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2017
Posts: 1,234
Likes: 155
From: Montreal/Cape Coral FL
2012 X6 35i Sport, 2013 ML 350 BT, 2019 4Runner TRD Pro, 2020 CRV-AWD
Welcome to the forum.

I'm also an HVAC contractor up in Montreal and I have a place down in Cape Coral FL.

As kombifan stated, up the oil change intervals. Read the info in the link he posted as well. Lose the engine covers and belly pans on anything diesel. Do the deletes and reduce the odds of future issues, though you cannot undo what's been done.
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 01:38 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