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Step-by-step procedure on how to replace the front air suspension strut on a 2006-2013 Mercedes-Benz S-Class W221.

Table of Contents

What you will need

Procedure

  1. Park the vehicle on a flat ground surface.The 2010 Mercedes-Benz S-Class W221.

     

  2. Pull the hood release under the dashboard and locate the hood latch release by the front grill. 
  3. Pull the tab up to unlock the hood latch and raise the hood until the hood stays open.Opened hood of the 2010 Mercedes-Benz S550 W221.

     

  4. Loosen the lug nuts on the front wheel using a tire rod or a breaker bar. You may need to use a 17mm butterfly socket to get the lug nuts out. 
  5. Jack up the vehicle's front and support the vehicle with jack stands.
  6. Remove the lug nuts and pull the wheel out of the vehicle.Removing the front wheel of the Mercedes-Benz S-Class W221.

     

  7. Push the metal clip down located on the ABS sensor connector. Then pry out the clip and disconnect the connector beside the ABS sensor.
  8. Pull the connector's cable out from the rubber grommet clips.Removing the connector beside the wheel speed sensor.

     

  9. Remove the 21mm mounting bolt on the bottom of the air suspension strut. Use a 21mm wrench and a Torx wrench to hold the center bolt.The 21mm mounting bolt below the air suspension strut.

     

  10. Loosen the 10mm bolt on the airline above the air suspension strut and then pull it out to remove it.Removing the airline hose above the air suspension strut.

     

    Removing the airline hose above the air suspension strut.
  11. Remove the three 13mm bolts above the air suspension strut using a 13mm socket wrench.Removing the 13mm bolts above the air suspension strut.

     

  12. Use a hammer to push the port of the 21mm mounting bolt out of the vehicle. 
  13. Remove the air suspension strut by carrying it out of the vehicle.Removing the air suspension strut of the Mercedes-Benz W221.Removing the air suspension strut of the Mercedes-Benz W221.

     

  14. Install the metal plate above the air suspension strut.Installing the metal plate above the air suspension strut.

     

  15. Line up the new air suspension strut to the vehicle.Installing the new air suspension strut of the Mercedes-Benz S550 W221.

     

    Installing the new air suspension strut of the Mercedes-Benz S550 W221.
  16. Reinstall the 21mm mounting bolt below the air suspension strut.Reinstalling the 21mm mounting bolt below the air suspension strut.

     

  17. Place the cable of the connector back to its original position and clip it back to the ABS sensor connector.Placing the cable back to its original position

     

    Clipping back the connector beside the wheel speed sensor.
  18. Reconnect the electrical connectors back to the vehicle.Reconnecting the electrical connectors back to the vehicle.

     

  19. Reinstall the three 13mm bolts above the air suspension strut.YOUCANIC-IMG_2110

     

  20. Insert the airline back into the air suspension strut and tighten the 10mm nut to lock it in position.Reinstalling the airline hose back to the air suspension strut.

     

  21. Reinstall the front wheel back to the vehicle.Reinstalling the front wheel back to the vehicle.  
Replace Front Air Suspension Strut on Mercedes-Benz S-Class 2006-2013 Step-by-step procedure on how to replace the front air suspension strut on a 2006-2013 Mercedes-Benz S-Class W221.