How to Replace the Battery in a New Mercedes-Benz C-Class Key?
2 Answers
To replace the battery in a new Mercedes-Benz C-Class key, follow these steps: 1. Turn the key to its back side and press the button; 2. Slide the back cover forward and remove it; 3. Pull out the adjacent card slot and take out the old battery; 4. Insert a new battery, reinsert the card slot, and close the back cover. Taking the 2021 Mercedes-Benz C-Class Dynamic Sport Edition as an example, it is a medium-sized 4-door 5-seater sedan with body dimensions of 4784mm in length, 1810mm in width, and 1457mm in height, with a wheelbase of 2920mm. It is equipped with a 1.5T engine and a 9-speed automatic manual transmission, delivering a maximum power of 115 kW and a maximum torque of 250 Nm. The drive system is front-engine rear-wheel drive, and both front and rear suspensions use multi-link independent suspension.
Replacing the battery in the new Mercedes-Benz C key isn't difficult - I've done it several times in my garage. Usually, you'll need a small screwdriver or plastic pry tool to gently open the casing from the small groove on the back of the key, being careful not to scratch the plastic with excessive force. When removing the old CR2032 battery, remember its orientation - the positive mark facing upward is crucial. Then insert a new battery (common supermarket brands like Duracell work fine), test the remote functions after installation, and make sure to securely close the casing to prevent loosening. The whole process takes just minutes. Key batteries typically last 1-2 years - if you notice reduced unlocking range, replace it promptly to avoid delays when locking your car. Regularly cleaning the key casing can also extend its lifespan. Sharing these tips makes maintenance more effortless.
