What is the reason for the bulb showing a fault when it is not broken?

[LaStella]

The reasons why the bulb shows a fault when it is not broken are: 1. There is a loose connection in the circuit; 2. The monitoring system is faulty. The solutions for the bulb showing a fault when it is not broken are: 1. Restart the car computer; 2. Reconnect the loose circuit. Steps to replace the bulb: 1. Unplug the power socket of the bulb; 2. After unplugging the power socket, remove the waterproof cover behind the bulb; 3. Take out the bulb from the reflector and replace it. The correct way to use car lights is: 1. Turn the left light control switch forward one notch for the small light; 2. Turn it forward two notches for the low beam; 3. Push the light control lever forward once for the high beam; 4. Lift the light control lever forward once for the right turn signal. Precautions for using car lights are: 1. Turn on the low beam when driving at night; 2. Do not use the high beam when the rear car is driving close to the front car in the same direction; 3. When passing sharp turns, slopes, arch bridges, crosswalks, or intersections without traffic lights at night, alternate between high and low beams to signal.