Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Replacing Mass Air Flow Sensor

Model: Mercedes Classe S W140, MK 3 - Years: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
Part: Engine

See other generations:
Video tutorial

The mass air flow sensor (commonly known as MAF sensor) is located right above the engine, between the two air filters; to access it, start by removing the front part of the plastic cover on the engine, then complete the removal of the rear part, which is actually the air filter housing; then unclip the metal tabs along the edges of the housing to remove it: at the center of the two filter slots is the mass air flow sensor; to replace it, disconnect the corresponding connector and the mounting screws; then proceed in reverse for installation.


Updated on 17 February 2026 by ScegliAuto


Related tutorials

How to Synchronize the Airflow of the Mercedes S-Class Air Conditioner
How to Synchronize the Airflow of the Mercedes S-Class Air Conditioner
Mercedes Classe S (2005-2013 / W221, MK 5) Today, you will learn the instructions to synchronize the airflow of the Mercedes S-Class air conditioner. First, get inside the cabin and start the …
Replacing the Glow Plugs on the Mercedes S-Class 2.2 Diesel
Replacing the Glow Plugs on the Mercedes S-Class 2.2 Diesel
Mercedes Classe S (2005-2013 / W221, MK 5) In this guide, follow the instructions to remove and replace the glow plugs of the Mercedes S-Class 2.2 Diesel engine. First, open the hood of your c…
Replacing the Engine RPM Sensor
Replacing the Engine RPM Sensor
Mercedes Classe S (1999-2005 / MK 4, W220) A malfunctioning engine RPM sensor can cause engine starting issues, sudden shutdowns, or rough operation. Open the hood and ensure it is securely su…

Other guides you may be interested in

How to open the bonnet on a Volkswagen Golf?

In this tutorial, you will see how to open the bonnet on a Volkswagen Golf MK4. This is a very simple operation that follows the standard procedure. First, open the driver's door, then locate the lever in the lower left area and pull it. Next, move to the front of the vehicle, lift the bonnet slightly, and find the second lever located just above the Volkswagen logo. At this point, simply pull it towards you, fully open the bonnet, and secure it with the prop rod. To close it, gently push it down.

Watch the video!


by ScegliAuto

More videos