How to Set Up One-Button Unlock for All Four Car Doors?

1 Answers
CamillaLynn
07/29/25 10:54am
Method to set up one-button unlocking for all four car doors: Simultaneously press the unlock and lock buttons on the remote key, wait for the turn signal to flash once, then release. If unsuccessful, visit a 4S shop to reprogram the vehicle's onboard computer. A remote key utilizes the wireless remote control function of the central locking system, allowing doors to be unlocked or locked from a distance without inserting the key into the lock cylinder, commonly used with smart door locks. Below is an introduction to car remote keys: 1. Basic principle: The key emits a weak radio wave received by the car's antenna. The electronic control unit (ECU) identifies the signal code, and the system's actuator performs the unlocking or locking action. 2. Components: The system mainly consists of two parts: a transmitter and a receiver.
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