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Customer-centric丨What is the solution to fog in the car lights?

A new BMW owner asked about foggy BMW headlights.

I suspect there is something wrong with my car.

Is it normal for BMW headlights to fog up?

For questions from car owners,

The editor will share with you some common knowledge about BMW headlight fog:

Why is there water mist inside the breathing headlights when it’s cold?

Because it has an air intake hole and an exhaust hole, it balances the air temperature inside the headlights when the headlights are on. Let the hot air go out and cool air in. (There is a filter sponge inside each hole)

When the outside air is humid, it is sucked into the car lights and the hot air is exhausted. When you turn off the lights, the temperature inside the car lights will be low, and the humid air will condense into water mist, which will adhere to the car lights. This is why you find fog in your headlights.

Causes of headlight fog

1. Fog caused by temperature difference changes

There is a breather pipe installed on the back cover of the headlight assembly. The thermally expanded gas is discharged through this channel, but sometimes some moisture enters the breather pipe, which causes slight fogging. This fogging situation usually occurs in winter, rainy season or foggy days.

In order to pursue better lighting effects, most headlights adopt lens type, which makes the light more concentrated. The moisture mainly accumulates on the mirror surface outside the lighting area, so it is easily discovered by car owners. Car owners do not need to panic after fog enters the car lights. Normally, it will not affect the normal use of the car lights.

Customer-centric丨What is the solution to fog in the car lights? 1

2. Car washing or wading in water causes fog

In addition to temperature differences, fog in the headlights is often caused by wading in water or improper car washing. When cleaning the engine, you should use a wet towel to scrub it instead of flushing it directly with a high-pressure water gun.

In addition, frequent water wading by vehicles can also easily cause fog on the headlights. After the water depth exceeds the wheel, the water will enter the car lights from the breather pipe. Water entering the car lights will not only affect the lighting, but may also damage the headlights.

Customer-centric丨What is the solution to fog in the car lights? 2

How to remove fog from car lights

When a car owner finds fog in the car lights, he first analyzes the cause of the fog. If it is caused by temperature difference or moisture, for example, if you use the car lights for too long at night, you will find fog in the car lights the next day. At this time, as long as the low beam or high beam is turned on for about 10 minutes, the fog in the car lights will slowly disappear.

Under normal circumstances, the moisture in the car lights will evaporate quickly when the lights are used normally or under sunlight. Never use the method of baking the lights to remove the fog, so as not to damage the lights.

For fog generated after washing the car or wading in water, be sure to turn on the car lights in time to allow the fog to evaporate. The fog in the car lights cannot be ignored for a long time. Car owners should develop the habit of checking the usage of the car lights.

Customer-centric丨What is the solution to fog in the car lights? 3

Customer-centric丨What is the solution to fog in the car lights? 4

Use innovation to delight your driving experience;

Use innovation to care for your car experience;

Use innovation to achieve "zero distance" human-vehicle interconnection;

Use innovation to constantly realize all new possibilities.

Be responsible for your car and enjoy an ecologically sustainable car policy!

Innovation, success, forward-looking, ecologically sustainable

Innovative products and services make life more convenient and comfortable; innovative technology is the key to success.

Adhere to innovation and development, adopt a forward-looking perspective, long-term strategic thinking, and develop new business models.

High-quality products, innovative concepts, high-quality R&D investment, innovative products and services, high-quality after-sales service concepts, reasonable prices, open communication, transparency, stable market position, long-term successful quality promotion, and enduring Quality and personality, this is BMW, one of the leaders in new energy vehicles, truly changing lifestyles. We have always been committed to innovation and development, providing customers with better quality services, pursuing breakthroughs, and bringing more innovative experience. Ensure the company's vitality and competitiveness, and strive to become one of the leaders in the industry.

Be responsible for your car, solve problems in a timely manner, use a positive service attitude, and provide high-quality after-sales service so that you can enjoy an ecologically sustainable car policy. The BMW Group has always adhered to "customer-centricity", launched products and services that highly meet the needs of Chinese customers, and promoted the sustainable and high-quality development of its core business. Actively forge ahead in the key innovation areas of the "new four modernizations", join hands with China's innovation forces, and successfully lead industry changes and the development of innovative travel in the future.

The success of the BMW Group stems from its forward-looking innovative development and highly responsible actions, breaking the inherent traditional thinking and insisting on innovation.

The BMW Group's implementation of ecological and social sustainability strategies and forward-looking perspectives throughout the entire value chain, comprehensive product responsibility, and clear commitment to energy conservation have become an important part of the BMW Group's corporate strategy.

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