What is the method for replacing the battery in a Mercedes-Benz A-Class key?
2 Answers
The method for replacing the battery in a Mercedes-Benz A-Class key is: 1. Remove the car key; 2. Use a flat-head screwdriver to insert into the gap on the side of the key and open the key cover; 3. Take out the old battery and replace it with a new one. Taking the 2020 Sport version of the Mercedes-Benz A-Class as an example, its body dimensions are: length 4622mm, width 1796mm, height 1454mm, wheelbase 2799mm, and fuel tank capacity 43l. The 2020 Sport version of the Mercedes-Benz A-Class features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.3T turbocharged engine, producing a maximum horsepower of 163PS, maximum power of 120kW, and maximum torque of 250Nm.
I've been driving a Mercedes-Benz A-Class for three years and often change the key battery myself—it's quite simple. First, look for a small gap on the back cover of the key, then gently pry it open with a small coin or thin card (avoid using excessive force). Next, remove the old battery, which is usually a small coin-shaped CR2025 model. Pay attention to the battery orientation—the side with the plus sign should face upward. Insert the new battery and press it lightly to ensure good contact. Finally, close the cover until you hear a click. It's recommended to check the battery every two years to extend the key's lifespan—just buy a cheap one from a convenience store. The method for Keyless Go keys is similar, but be careful not to damage the clips. After replacement, test the remote unlock function to ensure everything works properly and avoid getting stuck outside.
