Why does the car remote key have power but no response?

1 Answers
DeMason
07/29/25 3:40pm
Reasons why the car key has power but no response when pressed: nearby interference; building obstruction; insufficient battery power; remote key circuit board failure. Here are the relevant details: Low battery: As the battery power decreases, the strength of the radio waves is also affected. Normal face-to-face use may not be a problem, but radio waves cannot penetrate buildings. Function of the remote key: The mechanism is a wireless communication system composed of a transmitter and receiver, belonging to low-power radio equipment. The control system in the car identifies the signal code through the electronic control unit (ECU). The first generation of car keys, even if they still use mechanical key ignition, also have remote locking and unlocking functions; more advanced car keys can have one-button start or sensing unlocking; some even more advanced keys can have remote start.
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