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Resources for the Repair and Maintenance of your Mercedes-Benz ML350

Mercedes-Benz ML350 Models:

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Mercedes-Benz ML350 Problems

Drive Train -- Verified

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

Engine -- Verified

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.

Suspension & Steering -- Verified

It is not uncommon for the power steering rack to develop a fluid leak requiring replacement of the rack assembly. Loss of power steering fluid may also cause an abnormal noise and damage to the power steering pump.

Miscellaneous -- Verified

The tailgate latch may stick causing a drain on the battery while the vehicle is parked.

Electrical & Lights -- Verified

The brake light warning message for a burned out bulb may be displayed. Our technicians tell us the tail lamp housing may melt and distort causing a poor connection at the bulb. The lamp housing should be replaced to correct this condition.

Mercedes-Benz ML350 Recalls (Recent)

Body, Interior & Misc., June 2, 2008

RepairPal Expert Overview:

The weld on the trailer hitch assembly may be insufficient and not support a load. If the hitch weld failed, a load may separate from the vehicle, causing a road hazard. Dealers will repair the trailer hitch. The Mercedes-Benz recall number is 2008050004. This recall began during June, 2008.

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Drive Train, January 16, 2007

RepairPal Expert Overview:

The accelerator pedal may be loose due to insecure mounting studs and nuts. This could cause difficulty operating the accelerator. Dealers will inspect and install the mounting nuts of the accelerator pedal if necessary. The Mercedes-Benz recall number is 2006120008. This recall began on January 16, 2007.

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Electrical & Lights, August 1, 2008

RepairPal Expert Overview:

There is a faulty software calibration that affects several areas including shutting off the fuel supply in a collision. This could cause a fire hazard during an accident. Dealers will reprogram this software. The Mercedes-Benz recall number is 2008 070001. This recall began during August, 2008.

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Suspension & Steering, May 17, 2005

RepairPal Expert Overview:

The hose clamp used to secure the power steering fluid hose at the cooler may not provide sufficient clamping force, resulting in a power steering fluid leak. Loss of power steering fluid can damage the power steering pump and may result in diminished power steering assist, which could lead to a crash. Dealers will replace the power steering hose clamp to correct this concern. The Mercedes-Benz recall number is 2005 050004.

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Suspension & Steering, June 16, 2003


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Mercedes-Benz ML350 Questions and Answers

tracie8, 2003 Mercedes-Benz ML350, Salt Lake City, UT

I am being quoted almost a thousand dollars for this. Is that right?

edmondy, 2003 Mercedes-Benz ML350, Miami, FL

Can you tell me if this model has a timming chain or belt.
If it's belt when you must change it.
Thank you.

piper1, 2003 Mercedes-Benz ML350, Myrtle, MO

Two questions. I have just purchased this car two weeks ago. The check engine light came on yesterday. ARe there things I can try before taking it in for service? Also, what type of oil and how...

Montana1996, 2003 Mercedes-Benz ML350, Beverly Hills, CA

how do I reset the back hatch lock? I accidentally touched the latch when the back was open and it snapped the lock open - now it can not reset to a closed position

Visitor, 2003 Mercedes-Benz ML350, Saint Augustine, FL

Why am I hearing a noise in the front left tire area that goes faster as I excelerate?

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Mercedes-Benz ML350 Reviews

Purchased a used 07 in 07 (10 months and about 15k miles) and has been a nightmare since day 1. Engine, trans, A/C, electrical, steering, etc....you name it, it has gone bad on this car!!!! My third MB and could very well be my last. Tired of filling out surveys that ask you how clean the waiting room was when this POS breaks down weeks after repairs. Called MB Corp, no help at all. The level of arrogance at MB dealerships is the worst part. They act like its a privilege to get repair work done every few months and are rarely willing to bend on very expensive solutions.

I bought a 2005 ML350 in early 2013. Still drives like a dream. The only cons are that the check engine light came on 8 months after purchase. I took it to an auto parts store that ran a test that said it has something to do with the gas tank - air leaking. I still had the original cap so I bought a new one and reset the battery - it came back on and recently the SRS light came on. Both are annoying but minor. I had to change the lights but everything was original. It's only been a year but it was already 8 years old when I bought so can't complain so far. The service D code came on, I changed the filter (original) and had an oil change, the only problem now is that I have no idea how to reset the code. All in all I must have picked a lucky one compared to other reviews.

I bought a 2005 ml350 with 72K miles on it in 2011. It checked out fine.
About 8 months later the service light come on and I get a 3K bill. Belts, water pump, play in right wheel, rotors and breaks, etc, etc.

4 month later and the car starts to shake. Back to dealer. The fixed the injector stuck open, buttoned it back up and noticed a knocking noise. What is going on?? Oh, you'll probably need a new engine but it'll cost you 2K for us to confirm that. WHAT??
So, I'm at a loss and totally disappointed. I'll avoid MB like the plague. Buy what you want, but you have been warned.

I have a 2009 preowned ml350 with 32k miles It burns a qt of oil every 3200 miles The dealer is telling it is normal I dont believe it . I have a 2001 S430 with 124000 It does not burn a drop of oil

I have a 2007 ML350 which I purchased in 2009. I have no major mechanical complaints except that I am constantly changing lights bulbs (headlight, break lights, etc.)and the "Service B" indication keeps coming on. I've had an oil change maybe 2x a year being that I do a lot of driving but NEVER do I take it back to Mercedes, I take it to firestone or Mavis.

Wish I knew about the electrical problems, my trunk has stopped opening and closing by itself now I have to force it down and open myself.