More and more drivers are trying to maintain their cars on their own. This results in substantial savings because modern cars require more and more routine service and are done up of more and more technical components that result in new breakdowns or inconveniences. One of the complications that disturbs more and more Mercedes Benz M Class owners is a clogged air flow meter, which will lead to a loss of power and black exhaust gases. In this article we are going to take a look at how to clean the mass air flow sensor of your Mercedes Benz M Class? . First, we will show you how your mass airflow sensor functions and its value, second, why it may be relevant to clean this sensor , and at last, how to clean the mass air flow sensor of a Mercedes Benz M Class .

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Utility and action of the mass air flow meter of a Mercedes Benz M Class

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So we start our article with the procedure and point of your Mercedes Benz M Class flowmeter.

The purpose of the mass air flow sensor on Mercedes Benz M Class

The mass air flow sensor is a part that has been created actually quite not too long ago and specifically outfitted on diesel models. In actual fact, with injection engines, the fuel and air intake has become very precise and it is therefore necessary for the ECU to know the exact volume of air loaded into the engine to change the behaviour of complementary intake parts such as the injection or the EGR valve, if you have problems with the EGR valve on your Mercedes Benz M Class, do not hesitate to consult our article on this subject.

Mass air flow sensor operation on Mercedes Benz M Class

Now, we are going to examine how it functions, before trying to clean the mass air flow sensor of your Mercedes Benz M Class , you must already find out how it works to do this routine service action correctly.

The mass air flow sensor is therefore specifically there to obtain statistics on the air intake of your car. To do this, it must be mounted just after the air intake of your Mercedes Benz M Class, i. e. just after the air filter. It is a pipe outfitted with a sensor that will analyze the air in the intake and transfer the statistics to the ECU of your car.

Why clean the mass air flow sensor of a Mercedes Benz M Class?

The mass air flow sensor of your Mercedes Benz M Class can have complications and this is what we will try to see and figure out what complications you may be facing!

Mass air flow sensor complications Mercedes Benz M Class

Here are the different complications that the air flow sensor of your Mercedes Benz M Class can provoke:

  • higher fuel consumption: Because a dirty flow meter will necessarily result in excessive fuel consumption due to poor air flow…
  • Power loss: Linked to the same issue, this lack of air can provoke a loss of power to your engine.
  • Difficulties starting the vehicle: Finally, one of the last traditional complications linked to a dirty flowmeter will be that your Mercedes Benz M Class will have more difficulties to start the vehicle.

How do I clean the mass air flow sensor from a Mercedes Benz M Class?

After going over the operation and concerns that the flowmeter can provoke, we will look at how to resolve these complications by explaining to you how to clean the mass air flow sensor of your Mercedes Benz M Class . You should know that this procedure is actually quite basic to accomplish and you will not need advanced mechanical skills to do it yourself, a good method to avoid a trip to the workshop and a steep bill. See below the different steps to stick to to accomplish this routine service act:

  • After having located the mass air flow sensor of your Mercedes Benz M Class , you will have to dismantle it. To do this, action gently, but you will just have to disassemble it on both sides of the air duct and disconnect the electrical plug on top of it.
  • Once disassembled, you will be able to continue to the step cleaning the mass air flow sensor of your Mercedes Benz M Class . This sensor will, with time, get dirty and its two “filaments” that will give information to your computer on the quality and temperature of the air will no longer be able to collect data correctly, it is in this sense that it will disturb the operation of the engine unit of your Mercedes Benz M Class. The purpose of this cleaning will be to take out all its impurities to enable it to work efficiently again.
  • Let soak the lower part of your mass air flow sensor (not the plug part) in acetone or another solvent for a few minutes , which will take out most of the grime
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  • Now we’ll move on to the very gentle cleaning of the flow meter filaments. You have to be very careful, in any other case your mass air flow sensor will be permanently broken. With the help of a fine brush and solvent, gently clean the two filaments of your mass air flow sensor . If you are too afraid of harming it, you can also clean them with a brake fluid in the form of an aerosol by spraying the jet on these filaments.

Now you know how to clean the mass air flow sensor of your Mercedes Benz M Class , you should feel a noticeable difference in the behavior of your engine unit.

To get more tips on the Mercedes Benz M Class, take a look at the Mercedes Benz M Class category.