Scrapping Pressure Reservoirs For Level Control And Hydropneumatic Suspension, Central Reservoirs For Hydropneumatic Suspension - OS32.00-P-1000-01A

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

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Carefully loosen gas-filler plug on domed face of central reservoir or pressure reservoir, allow gas to escape and then completely screw out gas filler plug (arrow).

Courtesy of MERCEDES-BENZ USA