What does it mean to replace the remote key battery?

[JuliaDella]

It means the remote key battery is low and needs to be replaced. Replacement method: Generally, each brand's car key has a mechanical key. After finding the mechanical key, apply slight force at the top of the key to open it. Use a small flat-head screwdriver to gently pry out the old battery, then install the new battery with the correct positive and negative polarity alignment. After installing the battery, reassemble the car key by inserting the mechanical key back into its slot, and the assembly is complete. Precautions for battery replacement: When replacing the key battery, ensure there is no dirt, grease, or other foreign matter on the battery contacts. Batteries have positive and negative terminals; do not reverse them to avoid damaging the remote battery. After replacing the battery, check the key to ensure all functions of the smart key are working properly. Different car keys require different battery models, so it's best to choose the same model battery when purchasing.