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A Buyer’s Guide to the 2012 Mercedes-Benz ML350 BlueTec
The 2012 Mercedes-Benz ML350 BlueTec is a safe vehicle that offers many standard features such as solid wood accents, thick leather on the seats, and memory buttons to save your seating position. The...

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Input turbine speed sensor B has stopped working
Hello and thank you for your question. It sounds like the input turbine speed sensor B has failed or lost connection to the engine control module (ECM). You will first need to check the wiring to the sensor and see...
Steering wheel hard to turn in 2008 Mercedes-Benz ML350
In many cases, loss of steering effort can be traced back to a malfunction in the power steering system. The belt, if equipped, may have broken and stopped the function of the system pump. If electronic, the power assist motor...
A drunk guy Ploughed into our family car.
You may have frame damage that would total the car. You should have your vehicle completely inspected and checked by a professional. If you want to try to get this fixed, consider YourMechanic, as a certified technician can perform a...
Car window came off track
Hello. Typically if you can hear the motor running and the window is not moving, then the regulator has failed. I typically start by removing the door panel to check the regulator. If it is fine, then the window may...
If still runs great do I need new spark plugs yet?
Hello. The factory Mercedes recommended service interval for the spark plugs to be changed is actually at 60,000 miles or 6 years - whichever comes first. As for the price, you may already know that the dealers typically charge substantially...
Trunk not latching
It sounds to me like the latching mechanism isn't doing its job properly, probably requiring replacement. I would have a certified mechanic, such as one from YourMechanic, verify the issue and replace the latch if necessary.
My car failed the smog test and two codes came up: P0422 and P0432 Both Catalyst 2 Efficiency Below Threshold Bank 1 and Bank 2.
Hello there, thank you for asking about your 2003 Mercedes-Benz ML350. The catalytic converters have to be replaced. You have 4 options for parts and labor: 1. Have a certified technician from YourMechanic come to your home or office...
The Mercedes service advisor recommend replacing the rotors when they replace the brake pads.
The dealer would like to change the rotors to help prevent any come backs due to bad brake performance, vibrations, etc. It is not always necessary to replace the rotors, but if there is damage to them, like deep scoring,...
The dome and the rear brake lights are not working.
Hi there. It is very rare that these two circuits affect each other. It can be a failure in the SAM module if both of these problems started at the same time, but most of the time they are separate....
Do you need to change the rotor when the brake pads needs to be replaced for the front and rear?
Hello. Thanks for writing in about your Mercedes-Benz ML350. It is recommended to replace it if the rotor surface is worn, damaged, or is too thin. Typically I would always recommend replacing the rotors anytime the pads are changed. By...
Throttle. 2006 Mercedes Benz ML350
Hi there. This sounds like a throttle position sensor problem. The throttle position sensor relays the position of your foot on the pedal to the car's ECM, which then tells the fuel injection system how much more or less fuel...
Car wont start
The problem you are having may be the EIS ECU not turning on intermittently. There is a technical service bulletin from the manufacturer dated 11/29/2012 and the number is LI80.57-P-053608. You will need to dealer or a mechanic that has...
Airconditioning system off before start & warming up the engine before driving
I always recommend allowing the car to run until warm in cold or hot conditions. I wait for the engine to run until the idle hits the base idle speed (around 700-800 RPM) before driving it. This allows the oil...
How do I activate the auto door lock for this model car?
The auto lock feature is one of a number of convenience features that are controlled by the body computer. Normally you should be able to enable or disable this feature by holding down the door lock switch in the console...
Squeaking noise when braking. Pads still very good.
The majority of modern cars on the road have certain wear marks in the brake pads that will make a squeaking noise when they reach a specific material thickness. When the pads wear down to a specific mark, they will...
The car won't shift or accelerate, noisy reverse
Hello. Since the Check Engine Light is on, I start by scanning the computer for codes. This will give me a place to start. Most of the time, this is caused by a failing speed sensor on the transmission. When...
ESP and ABS malfunction, shifting issue, brakes locked up
Hello. This can be caused by a number of things. I usually start by scanning the computer for codes to see what shows up. Most of the time, this is caused by a speed sensor at one of the wheels...
Car cranks a lot, dash lights on, the odometer shows error
Hello. I would start by scanning the computer for codes first. If the Check Engine Light is on then the computer is seeing a problem. This will be the best place to start as the code will give an indication...
The car revs while not moving, the check engine light is on
Hello. If the engine speed is going up and down as the vehicle is sitting there and running, then it is not a transmission problem. It can be an intake manifold issue as they mentioned, as I have seen a...
Vibration on the right rear of my vehicle
The good news is you know which wheel the sound is coming from. Locating which wheel is making a noise is often a challenging task. Unfortunately, it sounds as though you need a wheel bearing. When the noise is this...

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