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What Causes the Remote Key to Unlock but Not Lock the Car Door?

1 Answers

AngelinaLynn

07/29/25 11:32am

Reasons why the remote key cannot lock the door: 1. The lock button on the remote is malfunctioning; 2. Factors such as aging of the remote transmitter's antenna; 3. Magnetic interference: Some areas may have strong magnetic signal interference, and since the remote key itself uses low-intensity radio waves, it cannot function properly under magnetic interference, naturally preventing the door from being locked. Below is more information about remote keys: 1. Concept: A remote key utilizes the wireless remote function of the central locking system, allowing the door to be unlocked or locked from a distance without inserting the key into the lock. 2. Working principle: The key first emits a weak radio wave, which is received by the car's antenna. The electronic control unit (ECU, Electronic-Control-Unit) identifies the signal code, and then the system's actuator (motor or electromagnetic coil) performs the locking or unlocking action.

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