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.
Resources for the Repair and Maintenance of your 2007 Mercedes-Benz R350
2007 Mercedes-Benz R350
2007 Mercedes-Benz R350 Problems
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.
A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.
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.
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.
2007 Mercedes-Benz R350 Recalls (Recent)
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.
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.
2007 Mercedes-Benz R350 Questions and Answers
A warning for loose gas cap came on 2 different times. after the second time check engine light came on. Was wondering what might be the problem.
Has anybody had any issues with this vehicle?
Literally, while entering the freeway, I have problems accelerating and are pushing the gas peddle to the floor and not going anywhere. The car is only 3 years old just does not seem SAFE nor logi...
Periodically there is a burning smell that is coming through my air vents, initially I thought it may have been a plastic bag under the vehicle or some type of leakage. I got an oil change and the...
2007 Mercedes-Benz R350 Reviews
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.
My wife's car as well. I love driving this car though. We've had it for a year now, purchased from the Auction as a lease. Still has manufacturer warranty. More comfort ride than our Honda Odyssey and more pickup too. People forget that most Mom's drive short distances and with frequent stops. So a car with more torque will get better gas mileage. That has been the case here compared to the 19/28 odyssey, and this 13/19 R350. In Real MOM driving conditions, the odyssey got 12mpg, and this has been getting 17mpg. We love it! Only issues has been that this car's computer detects EVERYTHING. If a light is low, a tire low, weight too heavy, you name it. Most are self explanatory but some are vague. Got a message once that just said MALFUNCTION in red. I took it to the dealer and they said that the car was hot and the springs malfunctioned by 1/200th. Nothing noticeable, but of course we panicked. Great car overall, makes me want another Benz.
Confortable driver seat and responsive vehicle.
Passenger seat is a tad narrow and stiff.
Major complaints: Problems with electric system, particularly electric sensor.