Where is the auxiliary battery located in the Mercedes-Benz V250?
2 Answers
Mercedes-Benz V250's auxiliary battery is located on the right side of the trunk. Auxiliary Battery: The auxiliary battery is an important component in a vehicle, responsible for powering all electronic devices and also for starting the engine. The commonly used batteries in vehicles are lead-acid batteries. Maintenance-free batteries usually come with a charge indicator (also known as a hydrometer), which can indicate the battery's charge level or state of charge. The indicator displays colors such as green, black, colorless, or light yellow. Battery Lifespan: The designed lifespan of a car battery is 27 months. Generally, for family vehicles that are used over a longer period, a new car battery can last 3-4 years. After replacement, the lifespan is typically around 2 years.
I run an auto repair shop, and the auxiliary battery in the Mercedes-Benz V250 is indeed well hidden. There's an access panel directly under the driver's seat, which you can only see by sliding the seat all the way back. After removing the panel, you'll find a small black box. Use a T40 Torx bit to unscrew the two mounting screws, and you can then remove the battery. Note that after replacing the battery, you must reset the system with a diagnostic computer; otherwise, the start-stop function will throw an error. Last time when I replaced one for a customer, I noticed the wiring harness connector is prone to damage from being crushed by the floor mat, so I recommend regularly checking the contacts for oxidation.
