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What is a Flood-Damaged Car, and Can It Be Purchased?

Flood-damaged cars should not be purchased due to the numerous unpredictable issues they can cause, which may compromise driving safety. After a vehicle has been submerged in water, it is difficult to completely dry out the moisture trapped in the seats and floor mats. When the car is exposed to sunlight, high temperatures can turn the interior into a steamy environment, leading to excessive humidity that corrodes electronic components through the floor and other areas. Below are relevant details: Semi-flooded cars: When the water level reaches the car's oil dipstick, it can be classified as a semi-flooded car. If the water reaches the engine hood or the dashboard inside the car, it is considered a fully flooded car. To prevent your vehicle from being submerged during heavy rain, always park it on higher ground to avoid turning your beloved car into a flood-damaged vehicle. Related issues: If a flood-damaged car is not repaired properly, the engine may suffer damage, and electrical circuits may short-circuit. If a flood-damaged car remains submerged for an extended period and is later driven, it could even lead to severe problems such as spontaneous combustion.

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Why does the car still not stop when ABS intervenes during braking?

When the car's wheels enter a locked state, the ABS will intervene. The reason why the car still doesn't stop when ABS intervenes during braking is that the tires are not locked. Here is more information about the ABS system: 1. The ABS system, or Anti-lock Braking System, intervenes to prevent wheel lock-up. Its function is to control the braking force when the car is braking, preventing the wheels from locking and keeping them in a state of simultaneous rolling and sliding. This ensures optimal adhesion between the wheels and the road surface. 2. The ABS system can be divided into four types: four-channel, three-channel, two-channel, and one-channel. The four-channel ABS has four wheel speed sensors and operates independently. If the adhesion area between the wheels and the road surface varies significantly, the braking force generated during braking will also differ greatly. The three-channel ABS independently controls the two front wheels, known as hybrid control. The two-channel ABS has a relatively limited application and is less commonly used in cars today. The one-channel ABS, often referred to as single-channel ABS, is a type of rear-wheel brake ABS. It enables the car to fully utilize braking effectiveness, reducing braking time and distance, effectively preventing the car from skidding, ensuring stability, allowing steering during braking, and maintaining good handling of the car.

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What to Do When the Vehicle Deviates During Braking on Wet Roads?

When the vehicle deviates during braking on wet roads, the correct approach is to first firmly grip the steering wheel and avoid slamming on the brakes. In this situation, immediately pressing the brake pedal can easily cause a rollover. If the rear wheels are locked and the pedal is not released, the car may experience a fishtailing phenomenon; if the front wheels are locked and the pedal is not released, the car's direction may become uncontrollable. Below are precautions for safe driving on slippery roads: While driving: On slippery roads, it is advisable to follow the tracks of the vehicle ahead to avoid sliding off the road. Maintain a steady speed in third gear and avoid sudden braking to prevent the vehicle from skidding into a ditch. In case of rear-wheel skidding: If the vehicle's rear wheels skid during braking, immediately release the brake and use a one-press-one-release method (i.e., pumping the brakes), while gently steering in the same direction as the skid to help the vehicle regain stability. For front-wheel skidding, gently steer in the opposite direction of the skid. Starting the vehicle: Apply the throttle smoothly and avoid high RPM starts with a heavy foot on the accelerator. Due to the low tire adhesion on slippery roads, high RPM starts can easily cause tire spin and make it difficult to start the vehicle.

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Do Diesel Vehicles Need to Add Urea?

Diesel vehicles must add urea. If urea is not used, the vehicle's engine will automatically decelerate. Additionally, if the urea purity is insufficient or of poor quality, it can also cause the engine to automatically decelerate. Here is more information about urea: 1. Urea is the common name, with the formal name being Diesel Exhaust Fluid (DEF). Other names include vehicle urea, automotive urea, and vehicle environmental urea. 2. Urea is a consumable required in SCR (Selective Catalytic Reduction) technology. SCR technology was developed by engine manufacturers to meet environmental regulations. SCR stands for Selective Catalytic Reduction Technology. 3. Urea is a liquid used in SCR technology to reduce nitrogen oxide (NOx) pollution in diesel vehicle exhaust. It consists of 67.5% deionized water and 32.5% high-purity urea. In the SCR system of diesel vehicles, urea catalyzes the reduction of NOx in the exhaust into harmless nitrogen (N2) and water, which are then expelled. 4. Under normal conditions, urea is harmless to humans. However, urea decomposes into ammonia gas at high temperatures. Prolonged exposure to ammonia gas may lead to symptoms such as skin pigmentation or ulcers.

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What Kind of Scratches Affect Vehicle Inspection?

Minor scratches on the vehicle's exterior during annual inspection do not have an impact, but obvious rust or damage will affect the inspection. According to the "Motor Vehicle Safety Technical Inspection Items and Methods," the vehicle's exterior must meet the following requirements: Components must be intact: Parts such as bumpers and rearview mirrors should be in good condition. Windshield must be complete: The windshield should be intact, with no cracks or damage in the driver's line of sight, and no mirror-reflective sunshade film should be applied to any windshield. The vehicle body should be symmetrical: The vehicle body should be properly aligned, and the height difference between symmetrical parts on the left and right sides of the vehicle's outer edge should comply with GB-7258 regulations. No protrusions on the exterior: The vehicle's exterior should not have obvious mirror-reflective surfaces, nor any components or structures that could potentially harm pedestrians, cyclists, or other traffic participants. There should be no sharp edges or protrusions that could cause injury. No visible damage: The vehicle body (including the cabin) and its paint should not show obvious signs of rust or damage. Labels should not impair safe driving: Any sprayed, pasted labels, or body advertisements should not interfere with safe driving.

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What are Full-Time 4WD and On-Demand 4WD?

Full-Time 4WD and On-Demand 4WD are described in detail as follows: Full-Time 4WD: Full-Time 4WD means that the vehicle is driven by all four wheels independently at all times. It achieves this through a flexibly connected central differential, which then distributes the driving force to all four tires via independent front and rear axle differentials. Unlike purely mechanical differential locks, the differential in Full-Time 4WD can be either a viscous coupling or a multi-plate clutch type, but both allow for a speed difference between the front and rear wheels, as well as between the left and right wheels. Whether a vehicle has Full-Time 4WD entirely depends on the construction of the transfer case. As the core component that manages different driving states of the vehicle, the transfer case largely determines the overall performance of the vehicle. On-Demand 4WD: On-Demand 4WD refers to a drivetrain that switches to four-wheel drive only when necessary, while remaining in two-wheel drive under other conditions. The system automatically switches between two-wheel drive and four-wheel drive modes based on the driving conditions, without requiring manual intervention. On-Demand 4WD differs from Part-Time 4WD, which requires manual switching between two-wheel and four-wheel drive, and Full-Time 4WD, which operates in four-wheel drive under all conditions.

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What do car enthusiast groups usually do?

What is a Flood-Damaged Car, and Can It Be Purchased?

Why does the car still not stop when ABS intervenes during braking?

What to Do When the Vehicle Deviates During Braking on Wet Roads?

Do Diesel Vehicles Need to Add Urea?

What Kind of Scratches Affect Vehicle Inspection?

What are Full-Time 4WD and On-Demand 4WD?

What are the differences between the v250 and v260?

What is an Intelligent Connected Vehicle?

Should I Choose 0W20 or 5W20 for Corolla?

Does the Dongfeng Honda CRV have an automatic locking function?