How to reset mercedes w221 air suspension

The Mercedes-Benz W221, which refers to the S-Class sedan produced from 2005 to 2013, often uses air suspension (Airmatic) to provide a smooth and adjustable ride. If you're experiencing issues with the air suspension system or need to reset it, here's a detailed guide on how to do it:

Air Suspension Reset Process for the Mercedes W221

1. Turn Off the Ignition:

   • Ensure the vehicle is parked on a flat surface.
   • Turn off the ignition and remove the key.

2. Open the Mercedes Benz Hood:

   • Open the hood to access the fuse box and locate the Airmatic fuse.

3. Locate and Reset the Airmatic Fuse:

   • In the fuse box, find the fuse dedicated to the air suspension (Airmatic).
   • The fuse is typically labeled "AIRMATIC" or "F1" in the owner's manual.
   • Mercedes W221 Air Suspension Reset: Remove the fuse for about 10-15 seconds, then reinsert it. This step can reset the system by cutting off power and rebooting the electronics that control the suspension.

4. Reset the Suspension System via the Control Module:

   • For some W221 models, you may also need to access the suspension control module using the car's on-board diagnostic system (OBD-II) to reset the system.
   • This step typically requires a specialized diagnostic tool (such as Mercedes-Benz Star Diagnostic or similar).
   • Connect the diagnostic tool to the OBD-II port, select the “Airmatic” or “Suspension” module, and follow the prompts to reset the system.

5. Turn On the Ignition:

   • Turn the ignition back on without starting the engine.
   • Allow the air suspension system to recalibrate. The system will perform an automatic check, and the car should adjust its height accordingly.

6. Test the W221 Suspension:

   • Once reset, test the system by driving the car for a short distance to ensure the suspension works properly.
   • Check for any warning lights on the dashboard. If the light persists or the suspension fails to adjust, further diagnosis may be necessary.

The reset process can solve minor issues with the air suspension, but if you continue to experience problems, the system might need more in-depth attention.