Can a Spare Key Start the Car?

1 Answers
VanStephanie
07/29/25 3:15pm
Spare keys can start the car. Extended information is as follows: 1. Types of spare keys: Mechanical keys, remote control keys, touchscreen LCD keys, smart wristband keys, etc. 2. How to use the keys: After turning off the vehicle, press and hold the lock button on the remote key to close the windows; press the red horn-shaped button on the key to locate the vehicle by the sound of the horn; press the trunk button to automatically open the trunk. 3. Principle of the keys: The owner emits a weak radio wave, which is received by the car's antenna. The electronic control unit (ECU) identifies the signal code, and the system's actuator performs the action of unlocking or locking.
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