Treatment methods for faults such as the cold start of the car CD player
I. Recently, the car has always been stuck in the CD player, does not read or even spit out the disc. What is the reason and how should it be dealt with?
Answer: The car CD player audio device uses digital discs to transmit music information, so the main reasons for the disc jam or not reading the disc are as follows:
1. Wrong disc selection: Due to the different disc formats, the CD player cannot recognize VCD discs and DVD discs. If the disc is selected incorrectly, the disc will not be read or the disc will spit.
2. Serious scratches on the disc: When the disc is severely scratched, the optical head sensor will not be able to read the digital information correctly, causing the disc to be stuck, not reading the disc or even “crash”.
3. The optical head is too dirty: The optical head sensor is an important precision component, and the dust is easy to refract light waves or even cover the transmission of light waves, which makes it impossible to read information and discs. Since the optical head sensor is expensive and damaged and cannot be repaired, you should find a professional maintenance technician to clean it with a professional cleaning solution.
4. “Crash” of CD players: the current CD players are all controlled by digital circuits, that is, single-chip control circuits. If the phenomenon of disc jamming or non-spitting discs often occurs, it is easy to cause CPU control program errors to appear. “Crash” phenomenon. The treatment is relatively simple. Generally, you can disconnect the negative pole of the battery for more than 15 seconds or press the reset switch on the CD player (mostly hidden buttons) to return to normal.
If the above methods cannot solve the problem, you should seek the help of professional maintenance technicians.
Second, when the car starts in the morning, it is found that the handbrake light is always on, what is the reason?
Answer: Generally, the handbrake light and the brake fluid level indicator light share a warning light, and the handbrake light of the Kia Yuan ship is also an EBD (brake force distribution system) warning light. Turn on the ignition switch normally, pull the handbrake lever tightly, the warning light will be on; the warning light should go out after letting go. If the warning light is always on, it means that the handbrake lever has not been loosened to the end; or the brake fluid is insufficient, you must check and add brake fluid immediately; or the EBD system is faulty; or the warning light line is short-circuited, you need to go to a professional repair shop to check .
Third, the car has now traveled 90,000 kilometers, and there has been no warm storage. Every morning when I get up, I always worry about the difficulty of starting the car. Why does this car have problems in winter?
Answer: As soon as the winter in the north arrives, the cold car will be difficult to start and it will give us a headache. I think maintenance can be considered from the following aspects:
1. Pay attention to the battery: Nowadays, maintenance-free batteries are commonly used in cars, and it is also necessary to regularly check the power display inside: under normal circumstances, green means that the power is normal, white means that it needs to be charged and maintained, and red means that the battery is dead (some say: Green means qualified, black means power loss, and white means the battery is damaged and needs to be replaced). The battery life is generally about two years. If it is found that the battery power has dropped, it should be replaced in time.
2. Pay attention to the throttle valve body and idle speed valve: the throttle valve body and idle speed valve are difficult to start due to the sticking of carbon deposits. The oil will turn off immediately, so it is best to go to the repair shop for a cleaning and maintenance in time. In addition, the air filter must be changed frequently when doing maintenance. The air filter in the northern air should be replaced every 10,000 kilometers. If it is a sandy road, it should be more timely.
3. Fuel pressure: In order to ensure the normal start of the engine, the residual oil pressure of the fuel system after the engine is turned off should not be lower than 2.5 ~ 3.5kg/C㎡, otherwise the fuel injector will not be able to spray enough fuel if the pressure is insufficient Guaranteed to start. At this point, if the ignition switch is repeatedly turned on, the fuel pressure will return to normal, and it will be much easier to start. But it is best to find a professional maintenance personnel to check the fuel system and troubleshoot.
4. Lubricant quality: In winter, all kinds of lubricating oils should be replaced in time, including engine oil, transmission oil, steering assist oil, etc., because the viscosity of ordinary lubricating oil increases in winter and the fluidity becomes poor. As a result, the frictional resistance increases when the parts move, and the engine is difficult to start cold. Oil with a slightly lower viscosity can be selected to reduce mechanical wear and protect the engine.
There are other factors, such as whether the various sensors are working properly, and whether the signals they “perceive” are accurate, are all prerequisites for startup. Reduce the chance of your car breaking down.
