Where is the auxiliary battery located in the Mercedes-Benz GLA200?
2 Answers
The auxiliary battery of the Mercedes-Benz GLA200 is located on the right side of the trunk. The auxiliary battery is an important component in a vehicle, responsible for powering all electronic devices and also for starting the engine. Additional information is as follows: 1. Automotive Battery: The commonly used batteries in vehicles are lead-acid batteries. Maintenance-free batteries usually come with a charge indicator (also known as a charging indicator), which can show the battery's charge level or charging status. The indicator displays colors such as green, black, colorless, or light yellow. The designed lifespan of an automotive battery is 27 months. Generally, family vehicles are more economical, and new car batteries often last 3-4 years. However, after the first replacement, they typically need to be replaced every 2 years. 2. Mercedes-Benz Auxiliary Battery: Its main function is to supply power to the starter motor, ignition system, and in-vehicle electrical devices when the engine is started or running at low speed, as the vehicle's alternator does not generate electricity or the voltage is very low. During normal engine operation, the alternator supplies power to the in-vehicle electrical devices and simultaneously charges the battery. When the power consumption of the vehicle's electrical devices exceeds the alternator's supply capacity, the battery works together with the alternator to supply power to the in-vehicle electrical devices.
Regarding the location of the auxiliary battery in the Mercedes-Benz GLA200, I've explored it a few times on my own car. It's usually hidden beneath the carpet or floor mat under the front passenger seat—you'll need to gently lift the carpet, and sometimes remove a plastic cover to find it. This auxiliary battery primarily supports the start-stop system and powers other small electrical components, avoiding the heat and vibrations of the engine compartment. When I replaced mine once, I noticed it's quite compact, cleverly positioned but easy to overlook. Remember to disconnect the main battery beforehand to prevent electric shock risks, as it's connected to sensitive circuits. If the auxiliary battery has issues—like the start-stop function failing or warning lights on the dashboard—it's best to inspect or replace it early. Don't yank it out; gently remove it. My advice is to pay extra attention to the footwell area and regularly clean out dust to ensure ventilation. These batteries typically last about three to five years, and if they fail, it's safest to have a professional shop handle the replacement.
