How Often Should the Battery of a New Energy Vehicle Be Replaced?

Will the Engine Light Come On If the Exhaust Fails?

If the exhaust fails, the engine light will come on. The oxygen sensor monitors the state of the engine's air-fuel mixture. When the mixture changes and causes excessive exhaust emissions, the control unit records the fault and illuminates the warning light to alert the driver. Exhaust Light Comes On After Refueling: If the exhaust emission warning light occasionally comes on after refueling, it is often due to substandard fuel quality, leading to incomplete combustion of the engine's air-fuel mixture. In such cases, it is advisable to avoid smaller gas stations when choosing where to refuel. Additionally, avoid refueling immediately after the gas station changes its oil supply. After refueling, you can add a high-quality fuel additive to improve fuel quality. Exhaust Light Stays On Continuously: If the exhaust emission light remains on continuously, a specialized diagnostic tool is needed to check the current fault codes stored in the engine. Based on the fault codes and the data from systems like the oxygen sensor, further troubleshooting is required. This is because any issues with sensors related to air-fuel mixture combustion, engine wiring, engine actuators (such as motors and solenoid valves), or the control unit can trigger the exhaust emission fault light.

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Are there cases of being photographed for speeding at a 20 km/h limit?

Generally, there are no cases of being photographed for speeding at a 20 km/h limit. Speed measurement is not allowed for a 20 km/h limit, but special circumstances cannot be ruled out. According to relevant regulations, mobile speed monitoring devices are generally not allowed to be set up on road sections with speed limits below 50 km/h (excluding 50 km/h). However, in special cases, speed monitoring devices can be set up after approval by the Municipal Public Security Bureau Traffic Police Detachment. Below are the relevant details: 1. Roads with speed limits below 50 km/h: Exceeding the speed limit by more than 10% but less than 20% results in a fine; exceeding the speed limit by more than 20% but less than 50% results in a fine; exceeding the speed limit by more than 50% but less than 70% results in a fine; exceeding the speed limit by 70% or more results in a fine. 2. Roads with speed limits between 50 km/h and 80 km/h: Exceeding the speed limit by more than 10% but less than 20% results in a fine; exceeding the speed limit by more than 20% but less than 50% results in a fine; exceeding the speed limit by more than 50% but less than 70% results in a fine; exceeding the speed limit by 70% or more results in a fine.

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Can a Car Pass Annual Inspection After Removing the Catalytic Converter?

A damaged catalytic converter affects exhaust emissions; during the annual inspection, if the exhaust emissions fail to meet standards, the vehicle will not pass the inspection. Below are the specific details about vehicle annual inspections: 1. Meaning of Annual Inspection: Vehicle annual inspection refers to a mandatory test for all vehicles that have obtained official license plates and registration certificates. It is equivalent to an annual "health check" for the vehicle according to the "Technical Conditions for Motor Vehicle Operation Safety." 2. Exemption Policy: Non-commercial small private passenger vehicles with 7 seats or fewer (including 7 seats) are exempt from on-site inspections for the first 6 years. However, the owner must still have the exhaust emissions tested within the specified period (usually every 2 years). After passing the emissions test, the owner must apply for an inspection compliance label at the vehicle management office, motor vehicle registration service station, or traffic police substation and affix it to the upper right corner of the front windshield. 3. Scope of the Exemption Policy: The 6-year exemption policy for non-commercial passenger vehicles has been in effect since September 1, 2014. Vehicles registered after September 1, 2012, are eligible for two exemptions; vehicles registered between September 1, 2010, and August 31, 2012, are eligible for one exemption; vehicles registered before August 31, 2010, must still undergo annual inspections according to the original regulations.

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How to Use the Two Attempts for Subject One?

The "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" clearly stipulates that candidates can take the Subject One exam twice on the same day. If the first attempt is unsuccessful, a second free retake is allowed. If the second attempt also fails, the Subject One exam is terminated, and the candidate can only reschedule the exam after ten days. Subject One, also known as the theoretical exam or driver theory test, is part of the motor vehicle driver's license assessment. The exam content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The exam is conducted on a computer with a time limit of 45 minutes. A passing score for Subject One is 90 out of 100, with the test consisting of 100 questions, including single-choice and true/false questions, each worth one point. If 11 questions are answered incorrectly, the system will automatically submit the exam and end the test. Subject One exam content: Driver's license and motor vehicle management regulations; road traffic conditions and rules; road traffic safety violations and penalties; road traffic accident handling regulations; basic knowledge of motor vehicles; local regulations; knowledge of braking systems and safety devices for large and medium-sized passenger and freight vehicles; specialized knowledge for wheeled self-propelled machinery, trams, and trolleybuses. Subject One exam precautions: Candidates should dress appropriately—no slippers—and electronic devices and bags are not allowed in the exam hall. Bring an ID card and queue to enter the waiting area. Observe the instructions and procedures on the large screen, and store personal belongings in lockers before entering the exam hall. Upon entering, verify your identity at the designated counter to receive a seat assignment. Once seated, begin the exam, ensuring the camera is aligned with you and adhering to exam discipline. If the first attempt is unsuccessful, a retake is available on the same day. If the retake also fails, a fee is required to reschedule. After completion, queue to collect the score report and sign it—unsigned reports are considered invalid. There is no limit to the number of times Subject One can be rescheduled. Each subject exam allows one retake if the initial attempt is unsuccessful. If the retake is also failed or not taken, the exam is terminated, and the applicant must reschedule. In contrast, Subject Two and Subject Three allow only five exam attempts, with rescheduling permitted after ten days. If the Subject Three safety and civilized driving knowledge exam is failed, the previously passed road driving skills exam results remain valid. The driving test consists of three subjects: Subject One, Subject Two, and Subject Three. Subject One refers to the road traffic safety laws, regulations, and related knowledge exam. Subject Two refers to the field driving skills exam. Subject Three is divided into two parts: road driving skills and safety and civilized driving knowledge exams. The safety and civilized driving knowledge exam is conducted after Subject Three, so it is commonly referred to as Subject Four. However, the official term (as per the Ministry of Public Security's Order No. 123) does not include "Subject Four."

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Why is the engine warning light on in the Beijing BJ40?

The main reasons for the engine warning light to illuminate include sensor issues, car maintenance problems, fuel quality issues, poor mixture combustion, engine intake problems, turbocharging problems, exhaust problems, and anti-theft system malfunctions. Additionally, during vehicle startup, the car performs a self-check on the engine system. Normally, the engine warning light will turn off after the self-check is completed. If it remains on for an extended period, it is advisable to seek professional help at a service station to diagnose and eliminate potential safety hazards. Below is a detailed explanation of each type of fault: Sensor issues: Sensors include those for coolant temperature, crankshaft position, air flow, intake temperature, and oxygen. When these sensors are damaged, have poor contact, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, causing the engine warning light to illuminate. In such cases, it is important to visit a service center promptly for professional diagnosis and to eliminate safety risks. Maintenance issues: Poor engine maintenance is one of the most common reasons for the engine warning light to illuminate. Vehicles have specific maintenance cycles, and failure to adhere to these cycles, combined with poor driving habits, can increase the burden on the engine, eventually triggering the engine warning light to alert the owner of a potential issue. Fuel quality issues: This refers to both fuel and engine oil. The fuel used in cars usually has a specific octane rating, and engine oil can be semi-synthetic or fully synthetic. Manufacturers typically recommend which fuel octane rating and type of engine oil to use. If the owner fails to follow these recommendations over time, it can lead to engine wear and trigger the warning light. Always use the recommended fuel octane rating and appropriate engine oil for your vehicle. Poor mixture combustion: Issues such as faulty spark plugs, ignition coils, fuel pumps, or clogged fuel lines can cause poor mixture combustion in the engine. This can lead to engine carbon buildup or knocking, which the oxygen sensor will detect and report to the ECU, prompting the warning light to illuminate as a warning. Intake problems: The engine requires air for combustion, and the air filter plays a crucial role in this process. If the air filter is dirty or not cleaned regularly, it can affect the engine's air intake, potentially leading to blockages over time. In severe cases, this can cause the engine warning light to illuminate. Turbocharging problems: Issues with the intake turbocharging system or turbocharger can also trigger the engine warning light. The most common problem is a damaged turbocharger, which may also cause symptoms such as oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Exhaust problems: Faults in the rear oxygen sensor, catalytic converter, exhaust camshaft, or bearings can cause the engine warning light to illuminate. The most common issue is a faulty catalytic converter, which can be caused by using leaded gasoline, lead- or silicon-containing oil additives, physical damage to the catalytic converter, or fuel system malfunctions. Anti-theft system: If the car's electronic anti-theft system malfunctions or the anti-theft controller is incompatible with the engine control unit, the anti-theft system can prevent the engine from operating normally, causing the warning light to illuminate. Solutions for when the engine warning light is on: If the engine warning light is on and the car cannot start, this may be due to a faulty fuel pump or ignition components. In this case, it is recommended to call for assistance immediately. If the engine warning light is on and the car is drivable but experiences severe shaking or loss of acceleration, pull over safely and call for roadside assistance. If the engine warning light is on but the car drives normally, this may indicate a minor sensor issue. You can continue driving cautiously at low to moderate speeds but should visit a repair shop as soon as possible to address the issue.

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What Causes a Car to Lose Power When Accelerating?

The reasons why a car loses power when accelerating are as follows: 1. Dirty throttle body: A dirty throttle body can cause this issue. Simply cleaning the throttle body and performing a reset can resolve the problem. 2. Air intake system malfunction: A leak in the car's air intake system can trigger the engine control unit to illuminate the EPC warning light and result in power loss. Replacing the faulty air intake system components can fix the issue. 3. Brake system failure: If the car's brake system malfunctions and remains engaged, it requires inspection and replacement at a 4S shop.

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How Often Should the Battery of a New Energy Vehicle Be Replaced?

Will the Engine Light Come On If the Exhaust Fails?

Are there cases of being photographed for speeding at a 20 km/h limit?

Can a Car Pass Annual Inspection After Removing the Catalytic Converter?

How to Use the Two Attempts for Subject One?

Why is the engine warning light on in the Beijing BJ40?

What Causes a Car to Lose Power When Accelerating?

What does it mean when the SVS light comes on in a gasoline car?

What does the E gear in an automatic transmission car mean?

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Does Touching the Line in an S-Curve Result in Penalty Points?