Where is the auxiliary battery of Mercedes-Benz R350 located?
2 Answers
The auxiliary battery of Mercedes-Benz R350 is located under the front passenger seat. The larger battery is used for daily vehicle equipment and starting the car, while the smaller battery is for emergency purposes, especially for emergency gear unlocking. Functions of the auxiliary battery: During engine start-up, it supplies power to major electrical equipment such as the starter and ignition system; when the engine is not running or operating at low speed, the battery supplies power to various electrical equipment; when there are too many electrical devices and the power consumption exceeds the generator's supply capacity, the battery assists the generator in supplying power to various electrical equipment. Vehicle battery: The commonly used batteries in vehicles are lead-acid batteries. Maintenance-free batteries are usually equipped with a charge indicator (also known as a charging indicator), which can indicate the battery's charge level or charging status. The indicator displays colors such as green, black, colorless, or light yellow.
I remember spending some time locating the auxiliary battery when helping a friend inspect his Mercedes-Benz R350 last time. After opening the trunk lid, I looked towards the right side where there was an inconspicuous small panel, usually a plastic cover. I gently pried it open to reveal the auxiliary battery hidden inside the sidewall. The placement is quite cleverly designed to save space without compromising aesthetics. The auxiliary battery is mainly used for supporting systems like the start-stop function. If the battery is low on charge, the car may shake noticeably. I recommend avoiding brute force when trying to open the panel to prevent scratching the interior trim. It's also a good idea to check if the mounting screws are loose. If your car has been in use for a long time, the battery may age, so it's best to regularly test the voltage to ensure safety and reliability. After that repair, we happily drove off for a picnic without any further issues.
