Where is the auxiliary battery located in a Mercedes-Benz?

2 Answers
Naomi
07/29/25 3:17pm
The auxiliary battery in Mercedes-Benz vehicles is located on the right side of the trunk. Here's some important information about the battery: 1. The battery is a crucial component of a vehicle, responsible for powering all electronic devices and starting the engine. 2. When the engine is off, the battery supplies power to all electronic devices. After starting the engine, the alternator takes over this function. 3. The battery is a wear-and-tear component that requires replacement. Avoid sitting in the car with electronic devices on for extended periods when the engine is off. In winter, try not to park the car outside overnight. Low outdoor temperatures in winter can reduce battery lifespan. When not driving for extended periods, disconnect the negative terminal to prevent battery drain. If the battery is dead and can't start the engine, you can call a friend for a jump start. During regular maintenance, have technicians check the battery's voltage and internal resistance with professional equipment. If these values fall below standard, it indicates the battery needs replacement.
Was this review help?
7
3
Share
DylanAnn
08/14/25 8:02am
I've helped friends locate the auxiliary battery in Mercedes-Benz cars several times, and it's usually quite hidden. The most common location is under the trunk floor on the right side—just lift the trunk mat to feel the cover, pry it open, and you'll find the battery. Why this design? Primarily to power the start-stop system, preventing the main battery from draining and affecting the engine. For example, this arrangement is typical in some GLC or C-Class models. When inspecting, note the battery is small, about palm-sized, often an AGM type, and regular replacement can prevent unexpected failures. If it's not obvious, also check the trunk sidewalls or under the seats, as Mercedes models vary slightly in placement. If the start-stop feels sluggish while driving, it might need replacing—DIY isn't hard, but always disconnect power for safety first.
Was this review help?
17
0
Share
Expand All
More Forum Discussions

Does Rain Affect a Car That Has Just Been Painted?

Rain does not have a significant impact on a car that has just been painted, although it may slightly affect the gloss. However, regular maintenance and waxing can help. Here are some relevant details: Precautions: It is best not to expose the car to rain within three days after traditional painting, and avoid washing the car within a week. If the car gets rained on right after painting, do not take immediate action. Wait for a week after painting to wash the car, then perform polishing. Check the polishing results—if any previous abnormalities are eliminated, that's ideal; if not, repainting may be necessary. Handling Methods: The best approach is to immediately move the car to a dry area. Do not touch the freshly painted surface. Once the paint is dry, use 1500-grit sandpaper with a sanding block and water to sand until the water marks are removed, then polish until the desired effect is achieved. If it starts raining during the painting process, stop immediately and move the car to a dry area. If only 1K base coat has been applied without clear coat, you can sand off the water marks and repaint. If clear coat has already been applied, do not repaint; wait for it to dry, then sand and repaint.
8
0
Share

How much gasoline does an 8-kilowatt generator consume per hour?

There is no precise measurement for the fuel consumption of an 8-kilowatt generator per hour, as fuel consumption generally depends on the generator's own fuel consumption rate and the size of the load. Below is relevant information about automotive generators: 1. Introduction: The automotive generator is the main power source of a vehicle. Its function is to supply power to all electrical devices while the engine is running normally and to charge the battery. Based on the three-phase stator winding of a conventional alternator, the number of winding turns is increased, and lead-out terminals are added, along with an additional three-phase bridge rectifier. At low speeds, the output is from the original winding and the additional winding in series, while at higher speeds, only the original three-phase winding provides the output. 2. Classification: Automotive generators can be divided into DC generators and AC generators.
19
2
Share

Is the Invoice Price of a Car the Naked Car Price?

Generally, the invoice price of a car is the naked car price. The relevant introduction of the naked car price is as follows: Introduction 1: The naked car price usually refers to the price of a commodity car without any non-standard accessories installed after leaving the factory (relative to the standard configuration when the car leaves the factory), which is the selling price at the 4S store. Introduction 2: The on-the-road price generally refers to all the expenses incurred by consumers from purchasing a car to licensing it. In addition to the manufacturer's suggested retail price (MSRP) of the vehicle, the on-the-road price also includes purchase tax, vehicle and vessel usage tax, car insurance fees, and licensing fees. If the car is purchased on loan, the on-the-road price also includes 4S store service fees, GPS fees, car loan interest, and other expenses.
1
2
Share

What is the assembly torque for the B12 engine?

B12 engine assembly is divided into four stages, with torques generally around 40N, 60N, 75N, and 90N. Below is relevant information about automotive engines: 1. Engine function: The car engine is the device that provides power to the vehicle, serving as the heart of the car, determining its power, fuel efficiency, stability, and environmental friendliness. 2. Materials used: Engine oil is a crucial material for the engine, containing various additives that effectively protect the engine's important moving parts and ensure its normal operation.
13
5
Share

What causes the ABS and anti-skid system to stop functioning in a Mercedes-Benz?

There are many reasons why the ABS and ESP may stop working. Issues such as tire pressure, cruise control problems, the brake HOLD function, control valves in the braking system, dynamic control high-pressure valves, inlet valves, outlet valves, brake cylinders, return pumps, active servos, non-original brake fluid, low-pressure accumulators, and more can all contribute to this problem. Here is some relevant information: For safety reasons, the ABR does not allow diagnostic tools to communicate with it while the vehicle is in motion. Although the vehicle is not currently moving, if the system mistakenly believes the vehicle is in motion, it may also prevent the diagnostic tool from communicating with the ABR. After careful consideration, the technician pointed to the wheel speed sensors as the likely culprit. If one or more wheel speed sensor signals are faulty, it can affect the system's ability to accurately determine the vehicle's driving status.
14
0
Share

What are the differences between Mercedes-Benz 200 and 300?

Mercedes-Benz 200 and 300 mainly differ in the following aspects: 1. Power: The Mercedes-Benz E200L is the low-power version, with a maximum power of 184 horsepower and a maximum torque of 300 Nm, while the Mercedes-Benz E300L adopts the high-power version, with a maximum power of 245 horsepower and a maximum torque of 370 Nm. The top speed of the E200 is 235 km/h, and the E300 is 250 km/h. The 0-100 km/h acceleration time for the E300 is 6.9 seconds, while the E200 takes 8.6 seconds. The fuel consumption for the E200 is 6.9L, and the E300 is 7.1L. The overall weight of the E300 is 30 kg more than the E200. 2. Configuration: The E300 additionally features a panoramic sunroof, electric steering wheel adjustment, memory steering wheel, memory function for electric seats, front seat heating, anti-glare interior and exterior rearview mirrors, and rearview mirror memory.
9
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.