How to Replace the Battery in a Civic Key Fob?

1 Answers
DelLuna
07/25/25 4:06am
The method for replacing the battery in a Civic key fob: 1. Remove the mechanical key. 2. Carefully pry open the edge with a coin to detach the upper half. Note: Wrap the coin with a cloth to avoid scratching the smart key remote. 3. Ensure the battery is installed correctly with the proper polarity. The key contains delicate electronic components. Follow these recommendations to prevent damage to the electronics: (1) Never leave the key in direct sunlight or in high-temperature, highly humid environments. (2) Avoid dropping the key or placing heavy objects on it. (3) Keep the key away from liquids. (4) Do not disassemble the key unless replacing the battery. If the circuits inside the key are damaged, the engine may not start, and the remote transmitter may also stop functioning.
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