Where can I replace a car key battery?

[Phillips]

4S stores can replace car key batteries, and car owners can also replace them themselves. The steps to replace a car key battery are: 1. Take out the key and prepare a utility knife, aligning the blade with the key; 2. Align the blade with the seam on the side of the key and pry it open; 3. Once opened, you can see the battery—remove the old one and replace it with a new one; 4. Press the key cover back on, similar to installing a phone back cover. The typical model for car key batteries is CR2032, with other models including CR2025, CR2016, and CR1632. Here, "CR" stands for lithium battery, "20" indicates a battery diameter of 20mm, and "32" signifies a battery thickness of 3.2mm.