Is your 2011 BMW key fob acting up, especially in cold weather? Experiencing unresponsive locking/unlocking or missing personalized settings? A weak key fob battery is often the culprit. Replacing it yourself is easy and saves money. This guide shows you how to replace your 2011 Bmw Key Fob Battery.
Step 1: Gather Supplies
You’ll need a VL2020 battery, X-acto knife, soldering iron, and non-metallic pry tool (like a credit card).
Step 2: Open the Key Fob Casing
The glued BMW key fob needs careful opening. Gently cut along the seam with your X-acto knife. Go slowly and avoid deep cuts to prevent PCB damage.
Step 3: Desolder Old Battery
Pry the old battery with a non-metallic tool. Desolder the corner terminal first for easier access.
Step 4: Solder New VL2020 Battery
Place the new battery into the PCB, aligned correctly. Press down lightly while soldering the terminals.
Step 5: Test and Reassemble
Dry fit the PCB and test key functions. If working, reassemble the fob. Glue it shut with gel-type cyanoacrylate, avoiding PCB contact.
Conclusion
Replacing your 2011 BMW key fob battery is a simple DIY task. Restore your key fob’s function and save on repair costs by following these steps carefully.
