What does it mean when the car key warning light is on?

[DeAmir]

Car key warning light is the vehicle anti-theft system fault indicator. When this light illuminates, it indicates an issue with the vehicle's anti-theft system or the car key. Below is relevant information about smart car keys: 1. Introduction: The car smart key is a common keyless entry system, also known as an intelligent key system. It consists of a transmitter, remote central locking control module, driving authorization system control module (three receivers), and related wiring harnesses that form the control system. 2. Function: The vehicle can enter locked or unlocked states based on signals from the smart key, and can even automatically close windows and sunroof.