Despite the high-level engineering that goes into building a Mercedes vehicle, it will occasionally require the service of a Mercedes master technician to keep it in pristine condition. The mass airflow (MAF) sensor is one of those components that may fail over time and need to be replaced.

The mass airflow sensor is located near the air intake and is an essential component of an electronic fuel injection system. The sensor measures the volume and density of the air drawn into your engine. It then sends a signal to your vehicle’s computer, informing it to send the appropriate fuel volume to match the air for effective combustion. Therefore, the sensor ensures the precise fuel/air mixture for the engine’s smooth combustion.

However, the failure of the MAF sensor impacts your engine’s smooth running. Keep reading as we discuss the symptoms and causes of a failing MAF sensor and how to deal with the failure.

Symptoms of a Failing MAF sensor in your Mercedes

While the sensor may seem very small and insignificant, its symptoms are usually very apparent when it fails. Discussed below are the symptoms of a failing MAF sensor:

• Reduced fuel efficiency: The most evident sign of an issue with the MAF sensor is a decline in your fuel economy. The sensor measures the volume of air taken into the engine and communicates it to the ECU to deliver matching fuel for engine combustion. An issue with the sensor means that the sensor may transmit inaccurate information to the ECU, resulting in the delivery of excess gas to the engine. Consequently, you may notice that you are spending more on gas.
• Rough idling: When the sensor becomes faulty, your Mercedes may idle roughly. A rough-idling engine is not a clear indication of an issue with the mass airflow sensor, since it can also indicate a problem with other systems, including a worn-out spark plug, malfunctioning fuel pump, clogged injectors or dirty fuel filter. Because of this, you need the service of our Mercedes mechanics to inspect your car and find the root of the problem.
• Engine misfire: Besides rough idling, a faulty MAF sensor could also cause the engine to misfire. A failing mass airflow sensor could give incorrect data to the engine’s computer, resulting in inadequate fuel delivery and causing an engine misfire.
• Hesitant acceleration: This is another symptom of a failed MAF sensor. A bad MAF sensor can cause too much fuel to be left in the combustion chamber, resulting in sudden detonations. You may begin to experience hesitations or sudden jerking motions when you accelerate.
• Difficulty starting your engine: You may also experience trouble starting your engine. When you turn the ignition, your engine may take time to start or stall for a short period.

A failed MAF sensor causes reduced engine performance, and if the problem is left unattended, it could ultimately result in engine failure. Hence, it is best to call a Mercedes specialist immediately if you notice any sign of a failing MAF sensor failure.

Causes of Mass Airflow Sensor Failure

The major cause of the sensor failure is contamination. The sensor gets contaminated by dirt and fine dust particles that make it past the air filter. The contaminants build up on the sensor and hinder it from performing its function. Once the sensor fails, it needs to be replaced.

Visit Das European Autohaus for the best Auto Repair Services in Houston!

If you notice any of the symptoms discussed above and live in or near Spring, TX, Das European Autohaus is the auto repair shop for you! At Das European Autohaus, our team of experienced technicians can help you solve any problem your Mercedes may have. We are highly experienced with European cars and are equipped with modern technology to diagnose and resolve any issue your vehicle may have.

We are located in Spring, TX, and have helped drivers of European vehicles take proper care of their cars for years with the same commitment to affordable, quality service. You don’t have to visit a dealership for professional Mercedes car care. Please call or visit our shop to schedule an appointment today, as we look forward to earning your business!