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C300

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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
when i turn a corner it seems like i get a hesitation in my wheels, what could that be
Hi there. This type of symptom is commonly caused by power steering fluid that is low, damage to wheel bearings, or other suspension components. If the steering wheel feels "heavy" when you turn, it's also possible that the steering stabilizer...
Question
Hello, I have a 2010 Mercedes c300. Lately each time I put gas the car won’t start until I keep pushing gas pedal. Code p2422
The codes (P0174, P0171) indicate insufficient fuel relative to the air charge (i.e., lean operation). Lean operation can be caused by a faulty fuel pressure regulator, a weak fuel pump, a clogged fuel filter, a faulty powertrain control module (not...
Question
Mercedes W205 C300 2015 4doors having jerk in gear from 2-3 and from 3-4
It sounds like you may have an internal transmission issue. It is possible that some reprogramming of the shift solenoids may resolve this issue. Otherwise I would recommend having a transmission specialist inspect your vehicle for any issues.
Question
I accidentally put diesel in a gas tank and drove like for 2 blocks.then it stoped.it does start up but does it completely. And si
The fuel system will have to be thoroughly cleaned and that's about it. A gasoline engine will not run on diesel. Your car was running during those 2 blocks on the gasoline that was in the fuel lines. Once the...
Question
The Esl is locked car won't start
With ignition on look to see if theft light is on or blinking to see if theft system is active. Sometimes another key if you have one will start vehicle if the key FOB is defective.If the battery is dead...
Question
Mercedes Benz c300, 2015 power steering malfunction is showing up on the dashboard.
Hi there. With electronic power steering system like your Mercedes-Benz C300 has, this issue is typically due to a sensor failure or mechanical problem with the power steering system that needs to be correctly diagnosed before any repairs are attempted....
Question
Is a 2008 Mercedes C300 sport sedan with 75,000 miles a good buy?
In evaluating the wisdom of buying a particular model of car (used or new), consult the database of the National Highway Traffic Safety Administration, NHTSA. The NHTSA database contains model specific consumer complaints, official recalls and factory service bulletins searchable...
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
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
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...
Question
Can a mechanic crack a rim while changing a tire?
Hi Adeline. Thanks for contacting us tonight. With today's tire changing machines, cracking a rim during removal and installation is incredibly difficult to do - however, it is possible. If the tire is busted off the bead (which is a...
Question
I have a new 2017 mercedes c300 and wanted to know about switching it over to LED headlights. Is this something that I have to sw
Hi Adam. Thanks for the question today. I believe Mercedes-Benz recommends swapping the headlamp housing when converting to LED bulbs on their C300. However, you might want to contact an MB dealership to get clarification from them, as I believe...
Question
i want to replace engine mounts of 2008 c300 4matic, so let me know how many and where engine mounts are on the car
Using Mercedes Benz' nomenclature, there is a front left, front right and rear (transmission) mount. If you are trying to diagnose and/resolve a vibration problem in the vehicle do not buy aftermarket motor mounts. The original mounts installed in the...
Question
2008 mbenz 300 4matic blower motor cover slides up and down repeatedly for 15min or more after shutting engine off and removing ke
Hi Vicki. Thanks for contacting us today. I think this is an example where a Mercedes-Benz specialist is better served to recommend the right repair, as this should be inspected personally by the mechanic to recommend the right repair. I...
Question
Q: Shaking
Shaking or vibration may be caused by many different things such as faulty spark plugs, poor fuel pressure or misfires. Other things such as a faulty idle air control valve may cause the engine idle to drop below the normal...
Question
Q: Low Coolant Light
This would depend on what exact coolant was used in the vehicle. There are many coolants that are made that are supposed to be Universal and for all vehicles. If you use Universal coolant in your vehicle, it is very...
Question
I have a 2010 Merceds Benz C300, the headlight will turn off for a few seconds then come back on while I'm driving. what can it be
Hi Thomas. Thanks for sending your question today. Typically, this type of issue is caused by a loose headlight electrical harness or an electrical short somewhere from the light switch to the headlight itself. The best way to determine the...
Question
2010 Mercedes C300. Car will start, but steering wheel is locked and red battery light is on dashboard
The battery warning light signifies an electrical problem and such could be in the battery, the alternator, the charging circuit or possibly (but less likely) elsewhere in the vehicle electrical system. There might be a relationship between the warning light...
Question
My mercedes c300 says collision prevention assist plus inoperative
The warning light means there is an electrical malfunction in the collision avoidance system and that could involve sensors, wiring, the control computer and so forth. Anybody who fixes it (whether you, a Mechanic, etc.) has to have in hand...

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