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Is it illegal to install underglow lights on a car?

1 Answers
LaReese
07/30/25 8:39am
Installing LED underglow lights on a car is considered illegal modification, and traffic police may confiscate the vehicle for mandatory scrapping. However, if you report it to the vehicle management office in advance, it will not be considered illegal. The following are the regulations for car modifications: 1. Permitted modifications: You can modify the body color, engine, fuel type, and frame number, but there are three colors reserved for special vehicles that cannot be used. Replacing the front bumper is considered altering the car's appearance and requires approval before modification. 2. Materials and procedures required for modification application: Fill out the 'Motor Vehicle Modification Registration Application Form,' then submit the 'Identity Proof of the Vehicle Owner and Driver,' 'Motor Vehicle Registration Certificate,' 'Motor Vehicle Driving License,' and standard photos of the vehicle for modification registration.
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What does the ECO in X-Trail mean?

The ECO in X-Trail refers to the vehicle's economical driving mode function. ECO is an English abbreviation formed from the words Ecology (environmental protection), Conservation (energy saving), and Optimization (power). The Eco mode is further divided into active eco driving mode and non-active eco driving mode. When the ECO indicator light on the dashboard illuminates, it indicates that the vehicle's economical mode has been activated. The eco mode is categorized into active and non-active types, with the difference being that the active type has its own dedicated button, allowing the driver to choose whether to activate it. When the driver presses the eco mode switch, the dashboard indicator light immediately turns on, and the vehicle automatically begins adjusting settings such as throttle opening, transmission shift logic, and air conditioning output power. The non-active eco mode does not have a dedicated button. When the dashboard ECO indicator light illuminates, it serves merely as a reminder function. The ECO system automatically evaluates your driving behavior. If your current driving operation achieves the optimal fuel supply, the dashboard will simultaneously display the ECO indicator light. Most vehicles use the active eco driving mode, meaning they have their own switch button. Additionally, the eco mode typically becomes ineffective under the following circumstances: When the vehicle speed exceeds 120 kilometers per hour, the system prioritizes speed, and the eco mode automatically deactivates. When the vehicle is idling or in N/P gear or manual mode, the eco mode may also become ineffective. When high torque output is required, such as when climbing a hill, the engine control unit prioritizes ensuring sufficient power to drive the vehicle, and the eco mode will not function in such cases.
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Does Revving the Engine in Neutral Gear Damage the Car?

Revving the engine in Neutral (N) gear does not damage the car. Manufacturers specify that the engine can only be started in Park (P) or Neutral (N) gear, so accelerating in these gears will not cause harm. Below is a detailed introduction to the usage of automatic transmission gears: 1. P (Park) Gear. Generally, engaging or disengaging this gear requires pressing the brake to prevent accidental vehicle movement or other misoperations. When the car is stationary, pressing the brake allows you to engage this gear. Once engaged, the transmission is locked, and the vehicle will not move. In this gear, pressing the brake enables the car to start. 2. R (Reverse) Gear. This gear is used for reversing and also requires the car to be completely stationary before engagement to avoid damage. 3. N (Neutral) Gear. Engaging this gear disconnects the engine's power output from the vehicle's traction system. 4. D (Drive) Gear. This is the forward driving gear used for most road conditions, except when climbing steep slopes or descending long slopes. You can shift directly into N gear, but you cannot shift directly into L gear when the vehicle is moving at high speed. 5. L (Low) Gear. This gear is primarily used for climbing steep slopes or descending long slopes to control speed and avoid prolonged brake use, which could lead to brake failure.
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What Are the Causes of Vehicle Body Shaking During Acceleration?

Vehicle body shaking during acceleration is caused by: 1. Dirty throttle body; 2. Excessive carbon buildup in the fuel injectors; 3. Excessive carbon buildup in the intake manifold; 4. Engine malfunction; 5. Insufficient cylinder pressure; 6. Faulty drive shaft; 7. Malfunction in the fuel system; 8. Aging engine components; 9. Ignition system failure. Solutions for car acceleration shaking include: 1. Replacing filters: including oil filter, fuel filter, and air filter, which can improve filtration efficiency, reduce impurities, and ensure more complete engine combustion; 2. Cleaning carbon deposits: including spark plug carbon deposits, throttle body carbon deposits, and cylinder carbon deposits.
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What are the reasons for high tire pressure?

The reasons for high tire pressure are: 1. Over-inflation of the tire leads to high tire pressure readings; 2. Tire dynamic imbalance with excessive deflection causes high tire wear temperature and increased tire pressure; 3. Inaccurate four-wheel alignment of a particular wheel. Hazards of high tire pressure: 1. Reduced tire friction and adhesion, affecting braking performance; 2. Causes steering wheel vibration and deviation, reducing driving comfort; 3. Accelerates localized wear of the tread center pattern, shortening tire lifespan; 4. Increases vehicle vibration, indirectly affecting the lifespan of other components. Factors affecting tire pressure: 1. Seasonal factors: In winter, adjust tire pressure based on the standard tire pressure, increasing it by 0.2 bar; in summer, if the car is parked outdoors, the pressure can be 0.1 bar lower than the standard to prevent high-temperature blowouts; 2. Tire pressure measurement environment: Cold tires and hot tires have different pressures, with a typical difference of 0.3 bar to note during measurement.
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What does Outlander ECO mean?

ECO refers to the vehicle's economical driving mode. ECO is an English abbreviation derived from the combination of Ecology (environmental protection), Conservation (energy saving), and Optimization (power). The Eco mode is further divided into active Eco driving mode and non-active Eco driving mode. When the Eco indicator light on the dashboard illuminates, it indicates that the vehicle's economical mode has been activated. The Eco mode is categorized into active and non-active types. The difference lies in the fact that the active type has its own dedicated button, allowing the driver to choose whether to activate it. When the driver presses the Eco mode switch, the dashboard indicator light immediately turns on, and the vehicle automatically begins adjusting settings such as throttle opening, transmission shift logic, and air conditioning output power. The non-active Eco mode does not have a dedicated button. When the Eco indicator light on the dashboard illuminates, it serves only as a reminder function. The Eco system automatically evaluates your driving behavior. If your current driving operation achieves the optimal fuel supply, the dashboard will simultaneously display the Eco indicator light. Most vehicles employ the active Eco driving mode, meaning they have their own switch button. Therefore, during daily driving, we can activate the Eco mode. However, it is unnecessary to enable the Eco mode when the speed exceeds 120 km/h, during idle parking, in N/P gear, or in manual mode, especially when climbing hills. Doing so would not reflect the fuel-saving characteristics of the Eco mode and could instead impact the vehicle's power performance. Additionally, the Eco mode typically becomes ineffective under the following circumstances: When the vehicle speed exceeds 120 kilometers per hour, the system prioritizes speed, causing the Eco mode to automatically deactivate. During idle parking or in N/P gear and manual mode, the Eco mode may also become ineffective. When high torque output is required, such as when climbing hills, the engine control unit prioritizes ensuring sufficient power to drive the vehicle, and the Eco mode will not function in such scenarios.
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How often should the vehicle's antifreeze be replaced?

Vehicle antifreeze should be replaced every 20,000 kilometers or approximately every 2 years. Antifreeze, fully known as antifreeze coolant, is a coolant with antifreeze properties that prevents the coolant from freezing during cold winter parking, which could otherwise cause the radiator to crack or damage the engine cylinder block. Precautions for using antifreeze: 1. Regularly check the antifreeze level and replenish it promptly if it falls below the minimum mark; 2. Observe whether the antifreeze has any turbid sediment, and replace it immediately if turbidity is present; 3. Different vehicle models use antifreeze of different colors, so they should not be mixed; 4. Before winter, measure the freezing point of the antifreeze to prevent it from freezing.
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