ML 350 BT Common Problems - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 05-29-2019, 03:23 PM Thread Starter
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ML 350 BT Common Problems

Hello Benzworld,

Looking for some advice on my 2010 ML 350 BT. This thing has been a total nightmare. We bought just off lease with 24k miles. Now at around 85k five years later. I have never experienced more problems with a car, and I've had a lot of old European cars with a lot of problems. I joined this forum last year when I went through my last major repair and found myself feeling better about keeping the car after talking to you guys and the mechanic. It seemed I've basically had every common problem happen already and sunk the money to fix it. I'm now regretting that decision. Now that I've just commissioned another $4000-6000 repair, I'm questioning yet again if I shouldn't just dump the car and move on.

My main question is what other common problems could I possibly experience that I haven't already? If I've done everything (as I thought last time), then it makes sense to keep it. But not if I'm going to continue to spend $3k+ per year fixing stupid problems. The thing basically fell apart (mechanically) at 50k miles. Here's what I've had to replace in the last 2.5 years:

- Diesel Particulate Filter (just commissioned - part is $3300, hopefully the turbo is okay otherwise that's another $1600-1800);
- Oil cooler seal;
- Radiator;
- Mass Airflow sensor;
- DEF preheater

There may be more. This current repair will put me well over $10k in 2.5 years, which seems a little absurd on a relatively new car. This car costs about as much per year to repair as my 2003 325iT has cost in 12 years.

Any information on other common problems I can expect to experience would be greatly appreciated so I can make a final decision on this albatross.

Thanks,

Richard
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post #2 of 5 (permalink) Old 05-30-2019, 08:17 PM
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Check the other forum with active diesel section for wealth of experience.
You choose not to disclosure your location, but lot of members where smogs are not required choose DPF delete.
Those are not bad engines, but as you experience small stuff can cost a fortune if you don't DIY.
I sold my 2008 E320 Bluetec for $3500, but with 190k miles.
That is what those cars are worth.


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Last edited by Kajtek1; 05-30-2019 at 08:19 PM.
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post #3 of 5 (permalink) Old 05-31-2019, 11:33 AM Thread Starter
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Thanks for the information - I’ll check it out. I’m in Virginia and don’t believe we have smog inspections. I did inquire with my mechanic if deletion were an option and he said not in Virginia.

Thanks again.
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post #4 of 5 (permalink) Old 06-12-2019, 04:57 AM
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The dpf is an emissions system, so check if it’s under warranty. The turbo will be at least $1300 as diy. Mine when through two sets of new Bosch afr sensors before changing to Denso that was old stock of rebranded Bosch. Rear oil seal is also a problem. A diesel is more expensive in the north east but can be less in CA.
CD changer are prone to jam too.
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post #5 of 5 (permalink) Old 06-12-2019, 09:29 AM
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I DIY turbo rebuild for $40 kit cost.
DPF delete is not something local mechanic can do. There are about 5 guys in America that can do that to date and seem every delete comes with some troubles.
Start with going on your state/county DMV site and READ about smog requirement.


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