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Resources for the Repair and Maintenance of your Mercedes-Benz R350

Mercedes-Benz R350 Models:

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Mercedes-Benz R350 Problems

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.

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.

Suspension & Steering -- Verified

A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.

Engine -- Verified

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance. Communicating these specific symptoms to your technician can save diagnostic time.

Brakes -- Verified

As a way to increase braking performance, the brake pads and rotors are make of a softer material and may be in need of replacement after approximately 20,000 miles; owners should be vigilant about getting their brakes checked.

Mercedes-Benz R350 Recalls (Recent)

Body, Interior & Misc., May 3, 2006

RepairPal Expert Overview:

Some second row seats were manufactured without threads in the nut used to secure the seat belt buckle. In the event of a crash, the buckle may not hold as designed, increasing the risk of injury to a second row seat occupant. Dealers will inspect the second row seat and replace it as necessary. This recall is scheduled to begin on May 3rd, 2006. The Mercedes-Benz recall number is 2006040003.

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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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Electrical & Lights, May 15, 2006

RepairPal Expert Overview:

The wiring harness to the starter motor may be routed incorrectly. This could lead to chafing of the protective sleeve on the engine mount cover. Over time, this chafing could wear through the sleeve and expose the underlying wiring. Damaged wires may result in a electrical short and loss of function of the vehicle's electrical system. Dealers will inspect the wiring and correct its routing. If necessary, the protective sleeve and/or wiring will be replaced. This recall is expected to begin on May 12, 2006. The Mercedes-Benz recall number is 2006040002.

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Suspension & Steering, January 28, 2009

RepairPal Expert Overview:

Mercedes–Benz is recalling certain 2008 GL-Class, M-Class, and R-Class vehicles for a possible defect in the driving pin used to control power steering oil pressure. If the pin breaks during normal vehicle turning, the steering assist will no longer operate, causing difficulty operating the steering wheel. Dealers will replace the steering gear in affected vehicles.

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Mercedes-Benz R350 Questions and Answers

da fish, 2006 Mercedes-Benz R350, San Diego, CA

I am a heavily trained in mechanics but don't want to inadvertently break something. How do I change the air filters on a 2006 mercedes r350?

Rosemary 61, 2006 Mercedes-Benz R350, Palatka, FL

The fronts seats will lock up this has happened now three times.The Dealers keep say it nothing and when we bring it to them it works.

Poleth miller, 2006 Mercedes-Benz R350, Huntersville, NC

I am getting a oil change. The mechanic said I need to change my air filters and he said that there is two air filters. I am not sure.

Visitor, 2006 Mercedes-Benz R350, Mesa, AZ

how do I reset break wear light on console breaks and sensors have been changed

Visitor, 2006 Mercedes-Benz R350, Portland, OR

My wife has ran the fuel tank dry. Is there anyway to reprime the system and/or reset the computer to get the vehicle running myself, without having to take it to the dealership? I am very mechanic...

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Mercedes-Benz R350 Reviews

I am actually in Canada near Toronto but the site wanted a US Zip code.

This is my second one. The first one was a 2006 that I traded in 2011 with 175km on it. Both are excellent cars. I agree the front end is too low as I have had to repair the bumper as well. The car is super comfortable, hugs the road very well - especially on a long trip, the seats are superb.

The biggest problem that I have is the dealer network. They verge on the criminal. Dealer routinely lie about repairs and overbill like crazy. I have now found a former Mercedes mechanic who has his own shop and I will take it to him for service.

My neighbour bought 2 Mercedes on my recommendation and came to me almost in tears after a couple of years of dealing with Mercedes dealerships.

I love the car and get a combined 10L/100 km (diesel) in mixed driving. Pretty good for a big car. Because of the dealer issues I think my next car will be something else. We'll see as I plan to keep this one til it hits 300,000 km.

I bought this car used as a certified Pre owned from Mercedes dealer. I bought it with 34000 miles. This Car has been in the shop a lot. I have now 61000 and here is a list of things that has been replaced on the car; Blower Motor, Power Steering Reservoir/Lower Hose, Tailgate Seal, Right Exhaust Cam Magnet, Master Windows Switch Unit, Both Front Hub Bearings, Steering Rack and Pinoin, Numerous Wheel Alignments, Replace Right Intake Camshaft Adjuster Magnet( Seems twice they replaced this), Right Rear Axle Seal, Engine Cam Plugs, Engine Oil Centrifuge, Tail Gate Latch, I believe there is more but i dont have the paperwork that states what they fixed. I my opinion this car is a POS. A Certified POS. I will never buy a Mercedes car again. Now i do have warranty on this POS but could you imagine what this would have cost me if i didnt. I have a Ford Escape with 150k and i never did anything major besides normal wear and tear stuff. This R350 wont see 100k before hitting the junk yard.

We bought the 2006 R350 used in 2008 with 30,000 miles on it for $18,000. This was when gas prices were so high and no one was buying any SUV. They needed to move it and we figured, you can't buy a Prius for $18,000. It had the factory warranty until 50,000 then we bought an extended warranty which will cover it for 5 more years or until 100,000. We needed a car (not a mini van) that could seat 6 adults and there simply are not many wagons out there that seat 6. So - what problems have we had - not many to be honest. The worst was some drive train thing that was covered by warranty. However, for the past two years, we've had this 'hissing' that sounds like cold water poured on a hot frying pan - when we turn off the car, pull out the key - and open the doors. It's the opening the doors that cause the sound. It's in for a 'C' service right now and the guys can hear the hiss but can't figure out where it's coming from. I didn't check if the car came with 'airmatic' - that lowers the car when it's off? Anyone else have that problem? The car has around 60,000 miles right now. Overall - it has had less problems that our Saturn - piece of crap - that needed all sorts of work and it was expensive work. Even a major tuneup was over $600 - for a 4 cylinder Saturn for gawd's sake. And don't get me started on the Plymouth Voyager - I will never, ever by a Plymouth product. At 71,000 miles the head gasket needed replacement - just off warranty. In 1995, $2,000. It blew again 3 months later. No warranty, nothing - another $2,000. We do not drive cars roughly - that was the family car - piece of junk. I have a 2003 CLK320 that is a wonderful, gorgeous car that has 105,000 miles and I'm keeping for another 100,000. Nothing major, usual maintenance, some years - $500 tops. That's a cheap car. We also have a Prius - blew two tires the first month. Something about the design of the rims - notice most Prius' have lost their hubcaps. Those (fronts) came off the first month, too.
Driving should not be painful - you should enjoy your car. If not, get one you do. They are all expensive and not built like 20 years ago. We don't 'love' the R350 and will get rid of it when it goes off warranty but until then, it's been good, reliable and seats 6 comfortably - and holds a lot of stuff - all 4 back seats go flat down. That's what we need right now...

I have had a problem with 2006 r- 350 within the 2nd month of being purchased. I am reading everyones situations with the same kind of vehicle. Glad to see I'm not the only one, but said because we are all dealing with the same issues: Blower for heating and cooling, Power steering which was fixed, but still not working, New problem is car leaning on right side, and I'm assuming its the shocks, Check light keeps coming back on. I want to know why all of these big issues are not under recall status. Someone please needs to take all the underline issue at hand and correct it. Thanks!

The R350 is really a money pit. This is the Pandora Box of vehicles. I purchased the car in Jul 2012 at about 84,600 miles. I had failed to take heed to the warning during our weekend test drive. As we were about to leave the dealership, I tried to close the rear lift gate. And I noticed that it would not close completely. After trying again without success, I got the sales man so he could give it a try. The lift gate still would not close. We drove a different SUV for the weekend. While waiting on the dealer to replace a $400 part. Needless to say we bought the car anyway. Not even 30 days later the rear airbag suspension began to fail. Which cost about $1,000 not including 2 tires from the suspension failing. I also had issues with A/C, heating, and defrost. When selecting the heater the defrost comes on full blast and fogs the windshield. It was useless. I later discovered that a software upgrade was the problem plus a weak battery totaling $420. I don't expect to own this vehicle much longer. All of the issues happen within the the 1st 90 days of ownership. I also tried to use my warranty and it was useless. MB is overrated stick with American. Lesson learned do your research.

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