Experiencing the frustrating “change remote key battery” message on your Mercedes W212? Like many owners, I encountered this issue and found that simply replacing the CR2025 battery wasn’t always the solution. I went through several brands of CR2025 batteries, only to be met with the same error message or, worse, a completely unresponsive key fob. Despite voltage checks confirming the batteries were functional, my key fob stubbornly refused to work.
Just as I was about to concede defeat and rely solely on my spare key, a fortunate discovery at a local store changed everything. Spotting a 4-pack of Energizer CR2025 batteries, I decided to give it one last shot. To my surprise and relief, swapping in the Energizer battery instantly brought my key fob back to life! It worked flawlessly.
So, if you’re struggling with a persistent key fob battery problem on your W212, my experience suggests trying Energizer brand CR2025 batteries. It might just be the simple and effective solution you need. Before assuming a more complex issue, this battery swap is definitely worth a try and could save you time and potential frustration.
