Reasons Behind a Mass Airflow Sensor Failure in Your Mercedes from Experts in Bellingham

Posted on May 28, 2021 by Carson Wileman

When owning a Mercedes-Benz, you have the comfort of a luxury vehicle with a high level of power and performance, but this can be affected by a malfunctioning Mass AirFlow (MAF) sensor. Proper preventative care can significantly impact the lifespan of this sensor, but when problems arise, it is necessary to seek the help of a certified mechanic. Various mechanical problems occur due to a faulty MAF, so make sure that you notice and take immediate action when these happen.

The Mass Airflow Sensor in Your Mercedes

The mass airflow sensor is a vital component in the movement of fuel throughout the engine. The system works through a wire mounted next to a temperature sensor. This acts to evaluate the temperature of air that flows over the system, allowing the sensor to regulate the level of fuel that enters the engine. A properly-functioning MAF contributes to the accurate performance of ignition and combustion.

Causes of Mass Airflow Sensor Failure

As your Mercedes ages and increases in miles, the mass airflow sensor is more susceptible to failure. Over time, the sensor may get covered in dirt, affecting its ability to properly function.

One way to avoid this issue is to regularly clean the sensor. Other preventative measures include inspecting the PCV valve, which can be performed during routine oil changes. The PCV valve works alongside the MAF sensor, so improper maintenance and cleaning of the valve can significantly impact the functionality of the sensor.

Symptoms of Mass Airflow Sensor Failure

Whenever the Mass Airflow Sensor is malfunctioning, this will impact the performance level of your Mercedes. There are a few significant warning signs that a driver may notice during daily driving. When experiencing any of the following mechanical problems, it is necessary to schedule a vehicle inspection with a service center.

If the Mass Airflow Sensor is not functioning as expected, your vehicle may experience rough idling. This can be hard to notice, but make sure that you pay attention to the way your vehicle handles low speeds or complete stops. If you feel an unusual rumbling of your engine during these conditions, this may indicate that your Mass Airflow Sensor needs to be replaced.

This sensor is vital to the basic operations of your Mercedes, so you may notice difficulties in your vehicle’s ability to start. Because this sensor regulates the proper amount of fuel that is allowed in the engine, a faulty sensor may be unable to inject fuel into the engine, leading to significant problems in starting.

Other noticeable symptoms of MAF failure are changes in acceleration, as well as difficulty when driving uphill or hauling. Your vehicle may experience hesitations or jerks when attempting to accelerate. Because driving uphill or carrying large loads requires your engine to work harder, a faulty mass airflow sensor may be unable to inject the required level of fuel for your engine to perform properly.

The regulation of fuel is disrupted when the MAF sensor malfunctions, so you may notice a strong gasoline odor. This is due to there being too much fuel injected into the engine. The excess fuel is expelled in the exhaust, which will cause the smell of gasoline.

Fuel economy may be affected because of improper MAF functioning, so you may notice a change in your vehicle’s gas mileage. The MAF may be unable to regulate the injection of fuel into the engine, causing your Mercedes to use more gasoline than usual.

Keith Cox Autobahn for MAF Repair

After noticing any warning signs of Mass Airflow Sensor failure, it is crucial to find a trusted repair shop that is experienced in handling all models of Mercedes to ensure that you receive quality service.

At Keith Cox Autobahn, our skilled mechanics are prepared to evaluate your vehicle and perform quality, affordable repairs when needed. We realize that our job isn’t finished until your vehicle is functioning at its highest level.

If you reside in Bellingham, WA, call us today to schedule an appointment so that we can address any concerns you might have with your Mercedes. We will keep you in the loop every step of the way so that you can fully trust and understand the options available for your vehicle. Contact us for expert service.