Where is the battery located in a Mercedes-Benz S500?
3 Answers
The Mercedes-Benz S500 has three batteries: the starter battery is located under the protective panel on the right side of the engine compartment, with newer versions using a polymer battery positioned at the top left corner of the engine cover; another battery is located next to the spare tire in the trunk; the auxiliary battery is inside the protective cover on the left side of the steering wheel (dashboard), requiring removal of both the dashboard's left cover and the panel above the driver's footwell to access. The Mercedes-Benz S500 has body dimensions of 5159mm in length, 1854mm in width, and 1453mm in height, with a wheelbase of 3086mm. It delivers a maximum power of 225kW and a maximum torque of 460Nm.
I just took over a Mercedes-Benz S500 and was curious about the battery location. Found it right under the trunk floor, usually on the right side with a plastic cover—just lift the carpet to see it. The designers placed it there to ensure even weight distribution for better driving stability and to prevent engine heat from damaging the battery. Remember when I first checked it: wear gloves and gently pry open the cover; avoid forcing it to prevent clip damage. The rear placement makes maintenance convenient. Regularly test the voltage (don’t let it drop below 12V) with a multimeter. The smart positioning minimizes vibration damage from bumps. When replacing, disconnect the negative terminal first to avoid sparks. Keep the trunk clutter-free to avoid blocking access in emergencies.
Having worked on car repairs for nearly twenty years, I can tell you that the battery of a Mercedes-Benz S500 is located under the trunk carpet on the right side. You need to lift the trunk's bottom carpet to reveal the cover plate screws. Before replacement, always disconnect the negative terminal of the battery and wrap it with insulating tape to prevent short circuits. The battery is compactly designed, so use a 10mm socket to loosen the mounting bracket during replacement. A common issue is corrosion on the connection terminals, which can be cleaned with sandpaper. Check the charging status every six months to see if there's any leakage. The trunk location is safer than the engine compartment, reducing the risk of thermal faults and making emergency jump-starting easier. With the right tools, replacement takes just two minutes.
