Where is the battery located in a Mercedes S350?

[StBrayden]

One is located on the right side of the engine compartment, which is the starter battery, and another is on the right side of the trunk, which is the vehicle battery. Another type is the maintenance-free battery located under the seat. This type of battery consumes very little electrolyte and basically does not require distilled water replenishment during its service life, making it more convenient to use. Here is some extended information: 1. Mercedes-Benz: Mercedes-Benz is a German automotive brand renowned for luxury and high performance, headquartered in Stuttgart, Germany, and a member of the Daimler AG. Its product line includes various passenger cars and medium-to-large commercial vehicles. 2. Standard configuration of the S350: Automatic climate control system with dust and activated carbon filters, push-button ignition, seat belt tensioners/force limiters for the front passenger and outer rear passengers, COMAND control and display system, cruise control with speed limit function via variable speed limiter, electrically adjustable steering column with easy-entry function, electric seats with lumbar support, headlight delay-off function, speed-sensitive variable power steering, and PRE-SAFE system.

[StGia]

Last time I took my Mercedes-Benz S350 out for a trip, the battery suddenly died, which was quite a hassle. I opened the trunk and checked—the battery is located under the right side of the luggage compartment floor. Just lift the carpet, and you'll see a black plastic cover. Remove a few screws and pry it open to reveal the battery. Mercedes probably designed it this way for better weight distribution or to protect the battery from engine heat in the front. Later, I realized that if the trunk is fully loaded, you'd have to move things around to access it, which is quite troublesome. I recommend new owners locate it beforehand to avoid trouble on the road. Also, before handling the battery, remember to turn off the engine and disconnect the negative terminal to prevent short circuits or electric shocks—safety first. Don’t make the same mistake I did by not wearing gloves and nearly hurting my hands. By the way, older Mercedes models might have the battery under the hood, but the S350 usually has it in the trunk.

[GabriellaDella]

My Mercedes-Benz S350 has been running for several years, and the battery is located under the mat on the right side of the trunk floor. The specific steps are: open the trunk door, pull off the carpet layer, and lift the cover in the right corner to find it. When I check it myself, I usually bring a wrench to easily remove the cover screws. This design is said to improve the car's stability by reducing weight near the rear wheels for better handling. Before working on it, make sure to turn off the engine and remove the key, and wear rubber gloves to prevent slipping and avoid acid splashes. If the battery is low, it's best to check the voltage with a multimeter, which is easy to purchase. Additionally, the hidden location might confuse rescue or towing teams, so it's advisable to keep a diagram in the manual or on your phone for quick reference. Regularly cleaning the terminals to prevent corrosion can extend its lifespan.

[DelIan]

I've driven the Mercedes S350 a few times, and the battery is located under the right-side cover panel in the main trunk floor. Just lift the mat and protective cover to find it. Mercedes designed this layout to optimize vehicle weight distribution for better performance. Maintenance is simple—just remove the cover with tools. For safety, disconnect the engine before starting any work.

[JourneyFitz]

I always prioritize safety when handling the car battery. The battery of the Mercedes-Benz S350 is hidden under the right side of the trunk floor. Before lifting the carpet and cover, be sure to turn off the engine and remove the key to avoid short circuits. I've seen some people neglect this, leading to dangerous sparks and battery acid splashing, which can easily harm the skin. The rearward placement is to reduce the risk of fire in the front engine area—Mercedes has thought it through. Wear gloves and goggles when working, and ensure good ventilation. If the power is unstable, it may affect starting; promptly check if the terminals are loose or corroded. For major issues, it's safer to seek a professional workshop.

[BlakelyMarie]

I've been following Mercedes-Benz models for a long time. The S350's battery is typically located under the right corner of the trunk floor. Just lift the carpet layer and remove the cover to access it. Placing it there serves two purposes: balancing front-rear weight for smoother driving and avoiding engine heat that accelerates battery aging. DIY replacement isn't too difficult, but it's best to use a wrench or screwdriver as tools. Before inspection, ensure the engine is off and disconnect the negative terminal to prevent accidents. Many people waste time searching due to its special location, so I recommend putting a small label on the cover as a marker. For routine maintenance, check voltage and clean dirt. The evolution of Mercedes' design shows varying battery positions across generations, and the S350's setup is quite practical.