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C300

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Hood sensor
Such a system is very limited in extent, and works using simple components. The Factory Service Manual for this vehicle will have a test protocol for the system. In addition, if the work was done at a Mercedes Benz dealership,...
Question
Break pads and rotors
Making a determination on what parts would need to be replaced will require an inspection of the brake system. Typically, when this light comes on, it means that the brake pad sensor has come into contact with the rotor and...
Question
Car not starting
Hello, it sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery...
Question
My key will not easily come out of the ignition on my 2011 Mercedes C300
Hello. If the key will come out then you have an issue with the key lock sensor in the shifter assembly. It is not uncommon for the shifter assembly to break internally or to become warped and make poor contact,...
Question
i plugged my negative cable on my mercedes 2008 c300 before positive what could i have messed up
As long as you did not reverse the polarity of the battery (i.e., connect the negative terminal of the battery to the positive side of the vehicle electrical system and connect the positive terminal of the battery to the vehicle...
Question
Where is the fuel filter located
The fuel filter on the gasoline powered cars is located inside the fuel tank. Yes, it seems crazy, but it's part of a new system that puts everything in the tank, pump, filter, regulator, pressure sensor, etc. There is a...
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Why does this site say it costs $2000 to replace a cv joint boot on the front passenger axle of my 2008 c300?
Hi...if there is a grinding noise from the joint/CV axle, or any noise for that matter from the joint, typically the entire axle is replaced. Replacing a torn boot is only acceptable if the joint is still serviceable which will...
Question
On a 2008 Mercedes Benz c300 where is the fuel filter located?
Hello. The fuel filter on your vehicle seems to be inside of the fuel tank. It should be serviceable by removing the rear seat cushion. Here Is a great write up with the instructions on how to remove it and...
Question
Mass Air flow sensor
Hi There, What you are describing sounds like a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays...
Question
I have 2008 Mercedes C300 4matic I bought the car with 155k miles and I had over 3month now I'm feeling. Little vibration on the c
Vibrations can be from a number of sources. The engine can be a source of vibrations. Anything from bad spark plugs, ignition coils, or any of a number of sensors can cause an engine vibration or misfire. A vibration in...
Question
How much to repair an electronic steering lock 2009 c300
You may be right that your car needs a new electronic steering lock (ESL) but there could be other issues as well. There is a digital conversation that takes place among the modules of your car before the decision to...
Question
Hi Khoa.
There are innumerable things that can go wrong with the A/C system and so the best thing to do is request an air conditioning system inspection and the responding certified mechanic will get this repaired for you. The possibilities that...
Question
Does a person have to buy rotors each time they have a brake job on a 2015 C class 300 4matic
If you don't want your 'Benz to sound like a fully loaded moving van when its coming to a stop, you will want to replace the rotors. It isn't always necessary to replace the brake rotors, but sometimes there will...
Question
Worries about maintaining a german car rather than Japanese
The same mechanical and electronic technologies are used in cars worldwide although there are always differences in repair procedures, assembly techniques and specifications. A competent mechanic will be able to repair a car no matter what the country of origin...
Question
DTC Code interpretation
It looks like you're using the Star Diagnostic system. So you are getting Mercedes Proprietary codes. The codes may not be published in a place where you can access them without going through Mercedes. They guard a lot of their...
Question
My doors no longer lock automatically when the car is in motion. Why is that?
The automatic door locking feature can be enabled or disabled with the master lock switch. To turn the door locking feature on, press and hold the master lock switch down for about five seconds. You will hear a beep when...
Question
car wont start due to steering lock issue
Hi there. Unfortunately, without knowing more details about symptoms you might have experienced prior to the car not starting, or inspecting the car ourselves, it's very difficult to tell for certain whether this mechanic is correct in the diagnosis. However,...
Question
Why my drive belt keep shredding ?
Usually, by the time a Mercedes drive belt is ready to be replaced, the tensioner is shot too. If you haven't replaced the tensioner, than you should. If the pulley that was replaced was in fact tensioner, then you need...
Question
I replaced my battery and my musical system is restarting all over
Check your connections to be sure all of the terminals are connected tightly. There are several large lines incorporated to the positive cable and if any one is loose, there may be a power interruption that is causing your your...
Question
Can you put a black light in the dome light of a Mercedes? 2009 Mercedes C300
HI there - short answer is "No", there are no black light bulbs which will replace standard automotive 12 volt sockets. Black lights are a form of fluorescent bulbs, which require transformers, and come as a "long tube" bulb. Custom...

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