<img style="clear:both; float:left; padding:10px 10px 10px 0px;border:0px; max-width: 370px;" src="http://www.chadspictures.com/automotive/BMW-Key-Fob-Battery-Replacement-Guide/tp_BMW-Key-Fob-Battery-Replacement-Guide-02.jpg" alt="replace bmw key fob battery" loading="lazy">If your BMW key fob turns into much less responsive, or just stops working, don’t panic. It’s likely a very simple repair: You want a new battery. Fortunately, BMW created a key fob that requires an simply attainable substitute battery. What sort of battery does a BMW key fob take? Depending on the mannequin and year, BMW vehicles with the Comfort Entry key fob use both a CR2032 or CR 2450 battery. Many BMWs require the CR2032 battery, including Sequence 1, 3, 5, and 7, as nicely as the X3 and X6. Where Can I Find the fitting Key Fob Battery, and how Much Will it Value? The CR2032 and CR2450 are frequent 3-volt lithium batteries accessible from most any place that sells batteries. They usually promote in packs of 2, 4, 5, 8, or 10 batteries and can be found in bulk purchases from online retailers. Typically, the overall cost is lower when buying in bulk. Main battery manufacturers have a tendency to hold a higher buy value for all varieties of batteries, including the CR2032 and CR2450.