Mercedes-Benz recommends that you have the 12 V battery replaced at a qualified specialist workshop, e.g. at a Mercedes-Benz Service Centre.
Always replace a faulty battery with a battery which meets the specific vehicle requirements.
The vehicle is equipped with a fleece battery. Full vehicle functionality is only guaranteed with a fleece battery. For safety reasons, Mercedes-Benz recommends that you only use batteries which have been tested and approved for your vehicle by Mercedes-Benz.
Use detachable parts such as vent hoses, elbow fittings or terminal covers from the battery which is to be replaced.
Make sure that the vent hose is always connected to the original opening on the side of the battery.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could escape.
Make sure that detachable parts are reconnected in the same way.