Is a car battery DC or AC?

What to Do When the Steering Wheel Shakes at 120 km/h on the Highway?

Perform a tire balance. Below is a related introduction about steering wheel shaking: 1. Reasons for steering wheel shaking: First, it could be due to uneven tire tread causing the steering wheel to shake. Unstable tires will start to vibrate when the car reaches a certain speed, and this vibration will be transmitted upwards through the car's drivetrain, leading to steering wheel shaking. Second, it could be caused by uneven surfaces on the brake discs or pads, resulting in shaking. 2. Methods to handle steering wheel shaking: Check if the tire tread is cracked. Aging tire rubber hardens and cracks, indicating that the tire has reached its replacement limit. Cracked tires have reduced grip and are prone to bursting due to external impacts while driving. Also, check if the tread is cut or punctured by nails. After a tire impact, promptly inspect the tread for bulges. Visit a tire repair shop to perform a tire balance using a tire balancing machine to identify the unbalanced areas and the required counterweights.

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What to Do When Keys Are Locked in the Car?

There are several solutions when keys are locked in the car: 1. The simplest method is to break the car window, but the subsequent repair costs are relatively high. 2. You can call a professional locksmith to unlock the car. 3. You can retrieve the spare key to open the car door. 4. If the car key is inside the car, the trunk can be opened because the proximity allows it to sense the key. You can directly open the trunk and climb into the car from there to retrieve the key. 5. There is a horizontal rubber strip on the right door of the car, which serves as a shock absorber to prevent glass damage. When the car key is locked inside, you can remove this rubber strip to find a lever in the gap. Lift the lever to open the door and retrieve the key.

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What are the reasons for the car remote control not responding when pressed?

Car key not responding reasons: 1. The battery in the car remote key is dead, causing the car remote control to malfunction. The solution is to replace the car remote control battery. It's particularly important to note that for some car models, replacing the remote control battery requires re-matching the key. 2. Other electronic signal interference causing the car remote key to malfunction. The solution is to move the car to a different location and try locking it again, which usually resolves the issue. Also, if the car remote key responds but cannot control the car, be cautious as there might be criminals nearby using signal jammers to interfere with the car remote key, intending to steal the vehicle. 3. The car remote key got wet, leading to a short circuit and malfunction. The solution is to disassemble the remote control and let it dry out. In most cases, the remote control will resume working. 4. Many high-end vehicles use keyless start systems. While this system is very convenient, if the keyless start transmitter fails, the car cannot be started even after the doors are opened.

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What does it mean when the engine fault indicator light turns yellow?

Possible reasons for the engine fault indicator light turning yellow are as follows: 1. Poor fuel quality: Fuel quality is the primary factor causing the engine fault light to illuminate. The anti-knock property of gasoline is indicated by its octane rating—the higher the octane number, the better the anti-knock performance. For example, 97-octane gasoline has an octane rating of no less than 97. Leaded gasoline can cause lead poisoning in oxygen sensors. Poor fuel quality is the main cause of insufficient engine combustion, leading to the engine fault light turning on. 2. Abnormal fuel pressure: If the fuel pump's supply pressure fails to reach the required level, it can result in inadequate atomization by the fuel injectors, affecting the engine's normal operation. When combustion is insufficient, the engine fault light will turn yellow.

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What Does the Automobile Three Guarantees Refer To?

Automobile three guarantees is the abbreviation for "guarantee of repair, replacement, and refund." This policy is a commitment by retail businesses to the products they sell and also serves as a protection for consumer rights. Guarantee of repair means that within the "three guarantees" period, any malfunction caused by quality issues of the automobile product will be repaired free of charge after technical appraisal by a "technical service center" or an "authorized service station." Guarantee of replacement means that within the "three guarantees" period, if quality issues arise that cannot be repaired, after appraisal by the "center" or "authorized station," qualified parts or assemblies can be replaced free of charge. Guarantee of refund means that within the "three guarantees" period, if major quality issues occur and the product still fails to meet its main technical performance indicators after the first two measures, the user may submit a written request for a refund. After appraisal and confirmation by the "center," the seller can process the vehicle return by charging a depreciation fee (1 yuan per kilometer for trucks and 1.5 yuan per kilometer for vans) based on the usage time and mileage.

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How Many Questions Are There in the Subject 4 Exam?

According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," Subject 4 consists of 50 questions in total, with each question worth 2 points, making a total of 100 points. Questions 1-10 are true/false questions; questions 11-40 are single-choice questions; and questions 41-50 are multiple-choice questions. The exam includes various question types such as image analysis, animated case studies, and text descriptions. The scope of Subject 4 covers driving knowledge under adverse weather and complex road conditions; identification of common traffic signs, markings, and hand signals; knowledge of traffic accident rescue and handling of common hazardous chemicals; comprehensive judgment of illegal behaviors and case analysis; emergency avoidance knowledge; safe driving knowledge; and driving ethics and civilized driving knowledge. According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," there is no limit to the number of attempts for Subject 1 and Subject 4 exams. If you fail the first attempt on the same day, you can retake the exam immediately. If you still fail, you need to reschedule the exam, but no additional fees are required for retakes. However, it is important to note that the validity period of the driving skill test permit is three years. If the applicant fails to complete the exam within the validity period, the scores of the already passed subjects will become invalid. Subject 4, also known as the Subject 4 theory exam or driver theory exam, is part of the motor vehicle driving license assessment. After the implementation of the Ministry of Public Security's Order No. 123, the Subject 3 exam was divided into two parts: the road test and the addition of the safety and civilization knowledge exam, commonly referred to as "Subject 4." Subject 4 is the colloquial name for the Subject 3 safety and civilization driving knowledge exam and is not a separate subject. Because this exam is conducted after Subject 3, it is commonly referred to as the Subject 4 exam. Officially, there is no Subject 4. The safety and civilization driving knowledge exam is conducted after Subject 3. Subject 4 Exam Notes: Exam Duration: The exam lasts 45 minutes. If you make mistakes totaling 12 points (6 questions) during the exam, the session will be terminated. Number of Questions: Depending on the type of driving license being tested, 50 questions are randomly selected from the corresponding Subject 4 question bank, with each question worth 2 points. Question Types: The exam includes single-choice questions (including true/false questions) and multiple-choice questions. The first 45 questions are single-choice, and the last 5 are multiple-choice. The exam also includes animated questions, image-based questions, scenario identification questions, and text-based questions. Retake Notes: If you fail Subject 4, you only need to retake Subject 4. The driving school will schedule the retake, and there is no limit to the number of retakes. You can retake the exam until you pass, and no additional fees are required for retakes. There are a total of 3 subjects in the driving test: Subject 1, Subject 2, and Subject 3. The Subject 3 exam is divided into two parts. Subject 1 refers to the road traffic safety laws, regulations, and related knowledge exam; Subject 2 refers to the field driving skills exam; and Subject 3 refers to the road driving skills and safety and civilization driving knowledge exam.

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Is a car battery DC or AC?

What to Do When the Steering Wheel Shakes at 120 km/h on the Highway?

What to Do When Keys Are Locked in the Car?

What are the reasons for the car remote control not responding when pressed?

What does it mean when the engine fault indicator light turns yellow?

What Does the Automobile Three Guarantees Refer To?

How Many Questions Are There in the Subject 4 Exam?

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What are the differences between the C1 and C2 driver's license test items?

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