Is Car Maintenance Required to Be Done at a 4S Shop?

What are the differences between DOT3 and DOT4?

DOT3 and DOT4 have different compositions: 1. DOT3 is generally glycol-ether based: The chemical components of glycol-ether type are polyethylene glycol or propylene glycol. Polyethylene glycol or propylene glycol has strong hydrophilicity, so its water content will gradually increase during use or storage. Since the boiling point of brake fluid decreases as the water content increases, its braking performance will decline accordingly. 2. DOT4 is generally ester-based: The ester type adds a large amount of borate ester on the basis of the glycol-ether type. Borate ester is formed by the esterification reaction of polyethylene glycol or propylene glycol with boric acid. The boiling point of borate ester is higher than that of polyethylene glycol or propylene glycol, so its braking performance is better.

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Is AC ON or OFF?

AC stands for air-condition, which can be understood as air control. ON means turn on, and OFF means turn off. So AC ON means the air conditioning is turned on, and AC OFF means the air conditioning is turned off. Here is more information about the car air conditioning AC button: 1. The function of the car air conditioning AC button: The car air conditioning AC is the switch of the compressor. The car air conditioning system not only includes the compressor but also the condenser, evaporator, expansion valve, etc. The compressor is one of the most important components of the refrigeration system, responsible for compressing and transporting refrigerant vapor. 2. The correct way to start the car air conditioning: First, start the engine for preheating. When the engine temperature pointer reaches the middle position, turn on the heating air conditioning, and set the air circulation to external circulation to discharge the cold air inside the car. After waiting for 2-3 minutes, set the air circulation to internal circulation.

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What does NEDC range mean?

NEDC range refers to the New European Driving Cycle. Here is some extended information about NEDC range: 1. NEDC range is the European standard for range testing. 2. China's Ministry of Industry and Information Technology uses the NEDC testing standard when measuring the comprehensive range of pure electric vehicles. 3. During NEDC testing, the vehicle is placed on a test bench. Although it can be conducted on a flat road without wind, to simulate various situations encountered during actual driving, the rollers in contact with the tires are equipped with motors to simulate resistance under different operating conditions. 4. The test includes two operating conditions. The first is the urban driving cycle, which simulates city driving from 0 to 780 seconds. During this phase, the vehicle repeatedly accelerates, maintains speed, decelerates, and stops four times. Starting from the 780th second, the second operating condition, the suburban driving cycle, is tested. During the suburban cycle, the vehicle speed is significantly faster than during the urban cycle.

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What does the EDC warning light mean?

edc warning light indicates a fault in the engine's electronic control system, prompting the owner to have it checked and repaired at a service center as soon as possible. EDC stands for Electric-Diesel-Control, which refers to the electronic control system for diesel injection. Its function is to electronically control the fuel injection system, enabling real-time control of fuel injection quantity and timing based on operating conditions. Below are specific scenarios when the EDC warning light illuminates: 1. The engine can start and run normally: This poses minimal harm to the engine and may be caused by damage to the high-voltage circuit, fuel injectors, or oxygen sensor, leading to increased fuel consumption. Typically, this indicates issues with the engine's high-voltage circuit, fuel injectors, or oxygen sensor circuit. First, check for water ingress or disconnection in components like high-voltage wires and spark plugs. 2. The engine fails to start normally: It is necessary to have the high-voltage wires, spark plugs, etc., inspected at a service center for faults. If the engine operates normally when starting the vehicle, it suggests minor damage to the battery or engine, and the issue may lie in the fuel or intake system. Check for excessive carbon buildup in the throttle body, whether the fuel pump is functioning correctly, or if the fuel filter is clogged.

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Is the JL478QEP engine a Blue Core engine?

JL478QEP is not a Blue Core engine. The Blue Core engine is a turbocharged engine, while the JL478QEP is a naturally aspirated engine. The JL478QEP engine is manufactured by Chongqing Changan Automobile and has been used in the Changan CS35. Additionally, Changan's first SUV was also equipped with this engine. The JL478QEP engine features DVVT (Dual Variable Valve Timing) technology for both intake and exhaust, delivering a power output of 92kW at 6000rpm and a torque of 160Nm between 4000-5000rpm. It is paired with either a 5-speed manual transmission or a 4-speed automatic transmission with manual mode. The Changan CS35 equipped with the JL478QEP engine also includes an engine start-stop system, controlled by the ECON button on the left side of the driver's seat, which further reduces fuel consumption for the 1.6L model. The JL478QEP engine boasts three key advantages: 'Power, Clean, Quiet.' It offers high reliability, high power, and high torque at low speeds. Equipped with Bosch's latest start-stop system, it saves fuel and reduces CO2 emissions. The engine's idle noise is only 38.5 decibels, which is below the industry average of 45 decibels.

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What is Dynapro Tire?

Dynapro is a flagship SUV tire series from Hankook. The advantages of Dynapro tires include strong wet performance, low noise, and being a low rolling resistance tire. Dynapro emphasizes tire handling, maintaining durability and excellent tire performance even in harsh environments. It can sustain tire performance in adverse weather and road conditions, with relatively low noise and vibration on different road surfaces, thereby improving fuel efficiency. Among the Dynapro series, RA23 and RA35 are particularly popular in the market. Below are the detailed introductions: 1. HP-RA23: This is a quiet and comfortable urban SUV tire, suitable for wheel sizes ranging from 15 to 18 inches, covering most urban SUVs. 2. HL2-RA35: This is a comprehensive high-performance urban SUV tire that achieves a good balance between handling, comfort, and quietness. It is available in three wheel sizes: 16 to 18 inches, with a smaller range of fitment compared to RA23, but it is more focused on medium to large SUV models.

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Is Car Maintenance Required to Be Done at a 4S Shop?

What are the differences between DOT3 and DOT4?

Is AC ON or OFF?

What does NEDC range mean?

What does the EDC warning light mean?

Is the JL478QEP engine a Blue Core engine?

What is Dynapro Tire?

What are the symptoms of CVT transmission slipping?

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