13 winter car maintenance skills and precautions

13 winter car maintenance skills and precautions

First, the heating system

Whether the heating system can work normally in winter is undoubtedly very important. Although the structure of heating system is simpler than that of air conditioning system, it will also fail if it is stopped for a summer.

So before winter, try whether there is hot air in the heating system, whether the fan is abnormal and whether the air duct is unobstructed.

Sometimes the antifreeze in the warm air water pipe does not flow for a long time, and it condenses and blocks the circulating pipeline. Although it does not affect driving, it is very troublesome to maintain. If there is a problem, you must go to the 4S shop or repair shop in time to repair it.

Second, the cooling system

We must use antifreeze in winter, especially in the cold north, where the temperature is below zero most of the time. If the cooling system of the engine is ordinary water, it is easy to freeze, which is not conducive to the start of the car and will almost cause serious damage to the engine. According to statistics, cooling system failure is the number one killer of engine failure, accounting for about 60% of the total number of engine failures! Therefore, the use of antifreeze in winter can effectively curb the occurrence of icing events in the cooling system. So don't forget to check the antifreeze in winter.

Generally speaking, it is recommended to replace antifreeze every two years. But if you have ever added ordinary water to antifreeze, the replacement cycle of antifreeze should be earlier, and you should pay attention to the color of antifreeze when replacing it. Different colors cannot be mixed.

As far as the choice of antifreeze is concerned, the lower the freezing point, the stronger the antifreeze. At present, the freezing point of antifreeze in the market has several specifications, such as-15℃, -25℃, -30℃, -40℃ and so on. , and the selected freezing point should be lower than the lowest temperature in this area 10℃ or above.

Third, hot cars.

Wait in place after igniting the car (the waiting time depends on the relatively stable time after the speed drops, generally not more than one minute). For example, when the vehicle started, the speed was above 2000 rpm. After about 30 seconds to 1 min, the engine tachometer pointer dropped to 1 200 rpm (but it has not dropped to the normal idle speed of 800 ~ 1 000 rpm), and it has been basically stable without obvious fluctuation.

There is no obvious jitter in the body, so you can start in gear. Keep the speed within 2000 rpm, drive slowly (without affecting the normal driving of other vehicles), and the water temperature will reach nearly 60℃ or above (more than one third of the general automobile water thermometer) to drive normally.

Fourthly, sprinkler system.

Even if the use of wiper spray system will be significantly reduced in winter, it can not be ignored, especially in the northern region.

Like antifreeze, although it can be replaced by clean water and washing water in summer, these substitutes may freeze in winter, so don't use them in winter. In the environment below zero degrees Celsius in winter, the frost-resistant winter glass water should be replaced, or an appropriate proportion of alcohol should be added to the glass water to achieve the purpose of lowering the freezing point and frost resistance.

Five, vehicle lighting inspection

In winter, it is necessary to thoroughly check the working state of the whole car lights and replace the black light bulbs as soon as possible. Fog lights, brake lights and turn signals should be checked by themselves. In the foggy morning in winter, visibility is low, and there are many rear-end accidents, so whether fog lights and high-position brake lights work normally is also the guarantee of driving safety in winter.

Six, power supply system

Here is mainly about the battery. The battery is very sensitive to low temperature. The capacity of the battery at low temperature is much lower than that at normal temperature. Although the existing battery is maintenance-free, there is no need to replenish the battery electrolyte and adjust the proportion of electrolyte.

However, before the arrival of the cold season, the terminals of the battery should also be cleaned and coated with special grease for protection, so as to ensure reliable starting and prolong the battery life. If the vehicle is parked in the open air or garage for several weeks, the battery should be taken out and stored in a warmer room to prevent the battery from being damaged.

Seven, tires

Rubber will become hard and brittle due to the decrease of air temperature, and the friction coefficient will decrease. The tire pressure should not be too high in winter, but it should not be too low.

When the outside temperature is low and the tire pressure is too low, the soft tire will accelerate the aging. In winter, it is necessary to clean up the inclusions in the tire tread frequently, try to avoid using tires that have been mended more than once, and replace tires with larger wear and different brands and patterns. The internal and external wear of tires are completely different. In order to ensure safety and reduce wear, the tire should be dynamically balanced with four wheels regularly, and the tire position should be changed.

Eight, windshield

Keeping the windshield clean is the basic condition for safe driving. In winter, the wiper should be scrubbed regularly to ensure that the windshield can be scraped clean in snowy days.

If possible, you can replace the antifreeze windshield to avoid freezing in winter. In addition, some windshield deicer can be added to the glass water.

When the windshield freezes, spray glass water on it, and the ice will melt, unlike the usual glass water when it freezes. The defogging circuit of rear window glass plays an important role. When driving in rainy or snowy days, the rear window defogging circuit can quickly remove fog or ice water, thus providing a good rear view for the driver. During maintenance, the window glass should be wiped along the printed circuit direction, that is, horizontally. If you rub it up and down, it is easy to break the resistance wire.

If it is necessary to check whether the defogging line works, you can turn on the defogging switch on the rear window to see if the fog on the rear window can be removed. If it cannot be removed, first check whether the fuse of the defogging line on the rear window is intact. If the fuse is normal, check the printed circuit on the rear window glass for damage. If it is broken, it should be sent to a repair shop for repair, or the water vapor and dirt in the broken part should be wiped off with a clean cloth, and then the tin foil for packaging cigarettes should be cut to a suitable size.

Nine, chassis

Because of the heavy snow and bad weather, sometimes in order to melt the ice and snow as soon as possible, the snow sweeper often sprinkles a lot of salt on the road surface to accelerate the melting of the ice and snow. In this way, the pavement is equivalent to a layer of acidic liquid pavement. When the car is driving on the ice and snow road, the speeding tires will obviously throw the snow water with high salt content onto the chassis of the car. If the chassis is not protected, it will easily lead to corrosion and rust of the chassis.

Therefore, you'd better take some time to do the anti-rust care of the chassis before winter. In order to better protect your car. It can also prolong the service life of the car.

Air intake system

In cold winter, it may often happen that the car can't start.

In addition to the insufficient charging of the cooling system and battery, most of the reasons are caused by too much carbon deposition in the throttle and air intake. Too much carbon deposits on the throttle itself can easily lead to ignition failure. In summer, the carbon deposit on the throttle may not affect the engine start, but in winter, due to the low ambient temperature of the vehicle, the gasoline volatilization is affected. Under the same conditions, the gasoline ignition ability is relatively weak, and the engine may not be able to ignite or need multiple ignitions. Therefore, it is recommended that the owner clean the engine throttle in winter. Under normal circumstances, it is recommended to clean the throttle body every 20,000 kilometers or so and check the spark plug, which can well prevent the engine from catching fire.

XI。 lubrication system

As we all know, engine oil has three functions of lubrication, cooling and cleaning, and the normal flow of engine oil is an important medium to ensure the normal operation of the engine. But the realization of these functions is mainly related to the viscosity and fluidity of engine oil. The viscosity of engine oil will change with the change of temperature. When changing oil in winter, we must pay attention to choosing the appropriate viscosity. Different viscosity grades are suitable for different ambient temperatures. If you choose it improperly, it will easily lead to problems such as difficulty or even failure to start the automobile engine.

Improper engine oil will increase the working resistance of the engine, aggravate the wear of mechanical parts and increase fuel consumption. Correct selection of engine oil will undoubtedly increase the service life of the engine.

Twelve. Wiper

When driving to work in winter morning, I often find a thick layer of fog or frost on the window, and sometimes even the wiper is frozen on the glass. Don't open the wiper by force at this time, which will not only damage the wiper, but also damage the glass. Never wash the glass directly with hot water, which will easily burst the window and deform the wiper!

At this time, you can start the engine first, turn on the warm air defogging mode, and blow the front windshield. After a period of time, the fog on the glass disappears and the wiper naturally separates. If it is too slow, the wiper spray bottle should generally be filled with antifreeze glass water, and the wiper can be supported if necessary. At the same time, it can be evenly coated on the inside of the glass with a special antifogging agent, which can prevent fogging for about four or five days at a time. In order to defog the rear window, you can turn on the resistance wire of the rear windshield to defog it. This function is also the standard configuration of most vehicles. The specific use method is very simple. Most vehicles only need to find this button on the central control panel and press it. Pay attention to more inspections at ordinary times.

Thirteen, choose the right place to park.

Winter weather is bad, windy weather, rain and snow are always sudden. In order to ensure that your car is not damaged by temporary weather changes, you should pay attention to choosing the right parking space.

To sum up, you should take care of your car in winter, because the temperature is very low and some parts of the car are fragile, so you should use it carefully and protect your car. I hope these thirteen details will help you.