How Often Should a Car Key Battery Be Replaced

[VanMarcus]

Car remote key batteries typically last 2-3 years. The exact replacement time is difficult to determine as it varies based on usage frequency and battery model. Functions of car remote keys: Car remote keys utilize the wireless remote control feature of central locking systems, enabling users to lock/unlock doors from a distance without inserting the key into the lock cylinder. The advantage is the ability to remotely lock/unlock anytime, anywhere, while also detecting the vehicle's location. Composition and classification of car remote keys: The car remote key system mainly consists of two components: transmitter and receiver. The transmitter comprises a transmission switch, transmission antenna (keypad), integrated circuit, etc. Based on operation methods, they can be classified into three types: active mode, passive mode, and coil induction mode.