What Causes the Car Key to Light Up Red?

[SanMila]

Here are the specific reasons why a car key might light up red: 1. Normal phenomenon: For some car models, pressing the key will cause a red light to turn on, such as the Arrizo 5. 2. Accompanied by the car's failure to start and the dashboard not lighting up: If the car key lights up red and the car cannot start, with the dashboard not lighting up, the red light on the key is due to the car's battery being dead. This could be caused by leaving the headlights on when locking the car, leading to battery drain. Replacing the battery can solve the problem. 3. Red backlight: It can be confirmed that the key is stained with color. If the car key cannot be used normally, it is recommended to use the mechanical key to open the car first.