Do you think your luxurious Mercedes is exhibiting a check engine light because of a faulty mass airflow sensor? A mass airflow sensor calculates the quantity of air that goes into an engine and relays this information to the computer that adjusts the air-fuel mixture in the engine. When it fails, the engine can never get the right composition of air and fuel mixture.

The good news however is that a failed MAF sensor can easily be fixed by cleaning it rather than changing it. Keep on reading to know the signs of this sensor failure and the process of diagnosing and solving MAF failures in Mercedes.

Signs That You May Have MAF Sensor Failure

• Poor Acceleration: One of the signs that indicate that an MAF sensor is bad is inadequate acceleration. If the sensor is delivering wrong data to the ECU, it may make the engine receive either too much or insufficient fuel. This results in low or irregular behavior as far as the car’s acceleration is concerned.
• Check Engine Light: If the MAF sensor is faulty, the car’s check light will definitely turn on. The computer of the vehicle is responsible for monitoring the MAF sensor and whenever it has an issue then this warning light will appear.
• Rough Idling or Stalling: Whenever you see that your Mercedes engine is rough idling or stalls, then you might have a bad MAF sensor. A faulty sensor may give wrong air measurements, which leads to the wrong fuel mixture and inconsistent performance called rough idling.

How To Diagnose A Failing MAF Sensor

• Check for Error Codes: When the check engine light is switched on, a diagnostic scan tool can read error codes that are stored inside the ECU. These codes can reveal if there is a problem with the MAF sensor or not.
• Inspect the Sensor: Diagnosis of the MAF sensor can also be done by a visual inspection; the sensor should be checked for any kind of dirt or obvious damage. If the sensor seems to be dirty or blocked, its performance may be improved by cleaning the area.
• Test the Sensor: The MAF sensor can be tested by a mechanic using a multimeter in order to test the voltage and resistance of the sensor. This can help to know if it is working well or if it needs to be replaced.

How To Solve A Failing MAF Sensor

• Clean the Sensor: If you suspect that the MAF sensor is the problem, then you should clean it with an MAF sensor cleaner. It is also important not to wash the sensor with a different procedure or use a different cleaning solution because the sensor may get damaged. Do not use standard cleaning products for cleaning because they leave behind a film that interferes with the sensor’s precision.
• Replace the Sensor: The only way out when the MAF sensor is damaged beyond repair is to get a new one from a trusted source. This makes the air measurements correct as well as bringing back the performance of your engine.
• Check and Replace Air Filters: The MAF sensor may be blocked by dirt and debris which is why the air filter should be checked regularly. Replace it as often as necessary if you want your Mercedes to continue to provide a clean airflow supply to the engine.
• Repair Electrical Issues: If the problem is with wiring or the electrical connections then a mechanic can check and replace a damaged part that may be hampering the smooth flow of signals between the sensor and the ECU.

Seek Assistance From A Specialist in Mercedes MAF Sensor Problems

If you are experiencing any of the symptoms that can be related to a bad mass airflow sensor on your Mercedes, then you are in the right place. Our professional mechanics at Masters European & Japanese Auto Repair are always ready to identify and solve MAF sensor-related issues effectively to have your vehicle in good shape.

We are based in Mill Valley, CA, and we primarily work on European and Japanese cars. Our services also cover drivers in and around the neighboring areas like Tiburon, Corte Madera, Larkspur, and Sausalito, CA. Give us a call today to book an appointment and bring your Mercedes back to its best!