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C300

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Vehicle won't start
There may be a main power circuit down on your car. The steering lock is electrically disengaged on your car as is the shift lock. One of the B positive terminals on your ignition switch is probably dead. There are...
Question
Should I buy this car ?
Hi there. The wear and tear could be cause by hand lotion, sanitizer, etc.. Many of the chemicals that we put on our hands gets transferred to the components we touch, including our faces, ewww. As for whether you should...
Question
car won't start
When the solenoid is energized, the pinion gear is forced out by a plunger or lever to mesh with the ring gear. If the starter motor is spinning, freely, without the pinion gear engaging the flywheel, then something is wrong...
Question
What oil type should be used for my car and how often should it be changed?
The oil specifications show synthetic oil in one of these weights 0w30, 5w30, 0w40, 5w40. The oil change interval is every 5,000 miles.
Question
My Mercedes has shredded two belts in a row
Mercedes uses a devilishly complicated automatic tensioner whose life span is about the same as the belt. The tensioner depends on the twisting force of a sleeve of bonded rubber to keep the belt tight, and by the time the...
Question
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
Engine vacuum pump and centrifuge is leaking.
Hi there. All parts on a car are designed to have a longevity date to them, but it is normal for parts that are more than 5 years old to fail. The vacuum pump and centrifuge could be leaking for...
Question
Electrical / Hose RODENT Damage to vacuum pump.
Hi there. If you have had a rodent living in your engine compartment, there could be multiple issues as rodents tend to chew through just about everything. It is possible that the rodent could have damaged the vacuum pump, but...
Question
P2006 code is present in the computer.
Hi there. With having the code P2006 present, check the intake wiring to the runner control and see if there is a good connection. Also, the runners in the intake could be clogged and needs cleaned out. A leaking or...
Question
Do I need a Transmission service?
If you ask your Mercedes dealer that question, they will tell you no, that the fluid is good for the life of the transmission. But many independent Mercedes mechanics are recommending that you do the fluid service at around 60...
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
I switched my steering lock and now my key won't work on my car. What should I do?
Whenever the keys or ignition lock are replaced on Mercedes models equipped with the smart key, the dealership must reprogram the ignition and keys together. Unfortunately, the vehicle may have to be towed to your local Mercedes dealership along with...
Question
My 2008 Mercedes-Benz heater blows warm then cool air
The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this...
Question
Engine coil was changed light is back on
This may be a result of another ignition coil failing. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly The insulation develops small fractures that open when heated and close...
Question
Car won't start but the electrical stuff is working
A no-start or start-then-stalls issue can be caused by a couple of different things. A bad smart key can be one of them. Use the second smart key provided with the vehicle to try starting the vehicle. If it starts,...
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
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...
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
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...

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