How to Replace the Cabin Air Filter in a ML320

Written by leonardo r. grabkowski
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How to Replace the Cabin Air Filter in a ML320
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Cabin air filters help keep pollen, spores, dust and other particles from coming through your interior air vents. Mercedes refers to this filter as a microfilter. The 1998 to 2004 Mercedes-Benz ML320 includes the filter. Other Mercedes M Class vehicles have the filter too, and the process for replacing it is the same in all of them (ML320, ML430, ML500). No tools are required to replace your cabin air filter; the procedure should take less than 15 minutes.

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  • Replacement cabin air filter

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  1. 1

    Open your passenger side door. Inspect the area beneath the glove box compartment to find the filter access panel.

  2. 2

    Grasp the filter access panel and pull it down sharply. The panel is attached by fasteners; a simple tug is required to unhook them. Once the access panel is off, you'll see the filter tray.

  3. 3

    Unhook the tab from the front of the filter tray. Pull the filter tray cover off and set it to the side. Grab the old filter and carefully pull it down.

  4. 4

    Slide the new filter up, into the tray. Position the filter tray cover in place; push it up to snap it back on.

  5. 5

    Position the access panel in place. Push it up firmly to reattach the fasteners.

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