What to Do When Car Key Buttons Are Not Working?

1 Answers
DelBarrett
07/30/25 8:36am
Car key buttons may not work due to: 1. Obstructions like buildings between the vehicle and the key. 2. Low battery causing the smart key's radio waves to fail reaching the vehicle. The range of the key's radio wave transmission is related to its penetration power. When the key's battery is low, the wave's penetration weakens, making it unable to pass through obstacles to reach the vehicle, resulting in unresponsive buttons. Basic principles of car remote keys: 1. The key emits weak radio waves, which are received by the car's antenna. The electronic control unit (ECU) deciphers the signal code, and the system's actuator (motor or electromagnetic coil) executes the lock/unlock action. 2. The system mainly consists of a transmitter and a receiver.
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