How to Replace the Key Battery for the New Mercedes-Benz GL-Class?
3 Answers
Method for replacing the key battery of the new Mercedes-Benz GL-Class: 1. Push the marked switch upward from the tail of the key to remove the mechanical key; 2. Use the mechanical key to press against the marked position and gently open the key casing; 3. Use a card to pry the old battery from the gaps on both sides and remove it; 4. Install the new battery, reassemble the casing, and reinsert the mechanical key. Taking the 2015 Mercedes-Benz GL-Class GL350 CDI 4MATIC as an example, its body dimensions are: length 5120mm, width 1934mm, height 1850mm, with a wheelbase of 3075mm, and the body structure is a 5-door, 5-seat SUV crossover.
I've changed the key battery for several Mercedes models, and the new GL-Class is quite user-friendly. There's a small groove on the side of the key – just push or press gently to separate the shell. Use a plastic tool to avoid scratching the interior. Replace with a new CR2032 battery, making sure not to reverse the polarity. After reassembling, test the remote unlock function to confirm it works properly. Doing it yourself costs just a few bucks, and keeping a spare battery in the car is handy for emergencies. Due to large temperature differences between winter and summer, the battery tends to drain faster. Proactively replacing it every two to three years saves hassle and prevents issues. If the dashboard warning light comes on, it's time to act. Repairing at the shop is too expensive – DIY is a better option, taking just five minutes to master this simple trick. If the shell feels loose, align and press it firmly.
Changing the key battery yourself is super easy. My key has a seam that pops open with a little pry. Just replace it with a new CR2032 battery, snap it shut, test the functions, and you're done. Replace it every two years to save hundreds on shop fees. Usually, keep the key in a dry place, away from heat and moisture to extend battery life. Lay a cloth on the table when working to prevent losing small parts. Beginners should take it slow and prepare tools like a plastic stick—safe, practical, cost-saving, and fun!
