
The auxiliary of the GLC260 is located on the right side of the trunk. The auxiliary battery generally refers to the battery that powers the entertainment system, windows, and lighting system during startup. The function of the GLC260 auxiliary battery is to supply power to the electrical appliances in use when starting the engine. The GLC260 is a mid-size SUV under the Mercedes-Benz brand, with body dimensions of 4764mm in length, 1898mm in width, and 1642mm in height, and a wheelbase of 2973mm. In terms of power, the GLC260 is equipped with two engines: one is a low-power version 2.0-liter turbocharged engine, and the other is a high-power version 2.0-liter turbocharged engine.

My GLC260's auxiliary is located under the trunk floor. After lifting the carpet, you'll see a black plastic cover next to the spare tire and some tool compartments. It took me some time to find it initially because you need a flathead screwdriver to pry open the cover, which has securing clips inside. This battery mainly supports the auto start-stop system and electronic stability devices. If it malfunctions, you may feel jerking during engine startup or see dashboard error messages. I recommend regular checks—if the battery ages, it's best to replace it with genuine parts at an authorized dealership to avoid compromising driving safety. I bought a multimeter to test the voltage; it should generally stay above 12 volts—anything lower requires immediate attention. Always disconnect the negative terminal during removal to prevent short circuits, and insulated gloves add safety. The location is quite hidden but not hard to find—consulting the user manual or online tutorial videos can save a lot of hassle.

The auxiliary location of the GLC260 is clearly defined - beneath the trunk floor panel. After removing the spare tire mat, you'll see a box. I noticed it's positioned on the right side of the vehicle, separated from the main battery, specifically powering the start-stop function. During my last maintenance, the technician reminded me that the battery lifespan is approximately three years, and failure would trigger the system warning light, so I check the connection cables for looseness every six months. Replacing it yourself is somewhat involved, requiring a wrench to remove the mounting screws, but DIY is feasible for those with mechanical aptitude - cost-effective and not overly difficult. Additionally, winter temperatures may affect performance, so I always check voltage readings before garage parking. Overall, its placement follows standard Mercedes-Benz positioning without compromising trunk space.

When I drove the GLC260, the auxiliary was hidden under the trunk floor, easily found by lifting the cover. This little guy is the secondary battery, mainly responsible for the auto start-stop function, ensuring a smooth restart every time you stop at a red light. It's located next to the spare tire, secured inside a black plastic casing, and can be seen with a simple disassembly. I didn't pay attention to it before until the start-stop malfunctioned, and I had to check the manual to find the issue. Replacing the battery costs around a hundred bucks, and it takes about half an hour to do it yourself—just remember to disconnect the power to prevent electric shock. The location is easy to access and doesn’t affect daily use.

The auxiliary in the GLC260 is located at the bottom of the trunk. Lift the carpet to find a small compartment. I prioritize safety because this battery powers the start-stop and electronic safety systems. If its position is exposed or loose, it could cause a short-circuit hazard while driving. I added a rubber mat myself to prevent moisture and extend its lifespan. The rear placement is ideal, avoiding overheating from the engine bay that could lead to aging. Regular maintenance can prevent accidents, such as using a voltmeter to check for low readings and replacing it if necessary. Never forcibly pull out the wires yourself; it's safest to have a professional handle it. The overall location is convenient but not obvious, so be careful when searching for it.

Finding the GLC260 auxiliary is quite simple. Just lift the floor panel in the trunk, and you'll see a small square box next to the spare tire. The first time I wasn't sure, so I checked the manual or online videos – even beginners can quickly figure it out. The location is well-designed and doesn't interfere with trunk storage. This secondary battery powers vehicle electronics like the start-stop function. If it fails, the system will prompt for maintenance. Personally, I prefer taking it to the repair shop for replacement – spending a little money saves time and hassle. Regular care like keeping it dry and protected from water/corrosion can extend its lifespan by several years.


