Headlights with water mist can put desiccant inside.

Reader miss Xu asked: recently, it was found that there was water mist in the headlights of cars. How should I get rid of it?

Reply: There are several main reasons for the fog failure of headlights: First, quality problems; Second, the lamps are damaged; The third is improper installation. Turning on the headlights will raise the temperature inside the lampshade, and the fog on the lampshade will turn into water vapor. However, after turning off the lights, the water vapor will still condense on the lampshade after it cools down. If there is too much water vapor, it may lead to the short circuit of fog lamp circuit, or the formation of water and alkali, which may lead to resistance and self-discharge.

It is suggested that you can put some desiccant in food or footwear packaging inside the fog lamp, which can basically eliminate the problem of water vapor. As for whether the headlights need to be replaced, it can only be determined after on-site inspection.

It is best for three people to cooperate in changing brake oil.

Reader Mr. Chen asked: The car needs to change the brake oil. What should I pay attention to when changing this?

Reply: It is best for three people to change the brake oil together. A person sits in the driver's position and is responsible for stepping on the brakes; A person in the engine compartment is ready to replenish brake oil at any time; There is also a person who deflates at four wheel positions in turn, and three people need to cooperate well, otherwise, it will easily lead to brake failure. It is recommended that you go to the 4S shop for replacement.