What is the method to remove the battery from a Mercedes car key?
2 Answers
The method to remove the battery from a Mercedes car key is: 1. Press the white button on the top of the key to take out the mechanical key; 2. Use the mechanical key to pry open the key cover; 3. Remove the battery. Taking the Mercedes V260 as an example, it belongs to the MVP category with body dimensions of: length 5140mm, width 1928mm, height 1880mm, and a wheelbase of 3200mm. The Mercedes V260 features a front MacPherson independent suspension and a rear semi-trailing arm independent suspension. It is equipped with a 2.0T turbocharged engine delivering a maximum horsepower of 211PS, maximum power of 155kW, maximum torque of 350Nm, paired with a 9-speed automatic transmission.
I find it quite handy every time I replace the battery in my Mercedes key. First, locate the small notch or sliding cover on the back of the key—most Mercedes keys can be opened by gently prying or sliding with a fingernail or small screwdriver. Be careful not to use too much force to avoid scratching the plastic casing. The battery inside is usually a CR2025 or CR2032 coin cell. When removing it, note whether the positive side faces up or down, and install the new battery in the same orientation. After replacing, press the buttons a few times to test if the remote functions properly. If there’s no response, it might be due to poor contact. On average, I replace it every two years, saving both the time and hundred or so dollars from a dealership visit. Don’t toss the old battery carelessly—dispose of it at a recycling station to avoid environmental pollution. This simple DIY task also reminds me to regularly check the key’s battery to avoid failure at critical moments—after all, being unable to remotely lock the car on the road is quite a hassle.
