What are the differences between the A45 and A45S?

What does the circle aoff on the car mean?

The aoff on the car is the auto start-stop switch. The engine auto start-stop is a system that automatically shuts off the engine when the vehicle comes to a temporary stop during driving and restarts the engine when it's time to move forward again. More information about auto start-stop is as follows: 1. After enabling this function, while driving, simply press the brake pedal, and the engine will automatically shut off after the vehicle comes to a complete stop for about two seconds. Keeping the brake pedal pressed will maintain the engine in the off state. 2. As soon as the brake is released or the steering wheel is turned, the engine will automatically restart immediately, and the car can be driven by pressing the accelerator pedal directly. 3. The working principle of the start-stop system is that when the vehicle stops due to congestion or at an intersection, the driver presses the brake pedal and shifts to neutral. The Start/Stop system automatically checks: the engine is idling and not in gear, the wheel speed sensors of the anti-lock system show zero, and the electronic battery sensor indicates sufficient energy for the next start. Once these three conditions are met, the engine automatically stops. When the traffic light turns green, the driver can press the clutch to start and quickly restart the engine.

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Is There a Big Difference Between 95 and 92 Gasoline?

The differences between 95 and 92 gasoline are as follows: 1. The anti-knock properties of 95 and 92 gasoline are different, which means their iso-octane values differ. 92 gasoline has an octane rating of 92, meaning it has the same anti-knock properties as a standard gasoline containing 92% iso-octane and 8% n-heptane. Similarly, 95 gasoline has the same anti-knock properties as a standard gasoline containing 95% iso-octane and 5% n-heptane. The higher the octane rating, the more iso-octane the gasoline contains, and the stronger its anti-knock ability. Generally, you just need to use the gasoline recommended by the manufacturer and don't necessarily need to pursue higher-octane gasoline. 2. 92 gasoline is more prone to knocking. To avoid knocking, the ignition timing of the spark plug must be delayed. The result of delayed ignition timing is relatively weaker power. In comparison, 95 gasoline is less prone to knocking, and the computer can control a relatively earlier ignition timing, so the power performance is relatively stronger. Simply put, it's like a sprint race—the speed of the start can affect the final result.

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How many liters of antifreeze should be added?

Each vehicle's antifreeze reservoir has markings, and the fluid should be filled to the midpoint between the maximum and minimum marks. Generally, 5 to 6 liters are added, but this should be done in two stages. After the engine has cooled down, open the engine compartment and check if the coolant level is sufficient. The antifreeze reservoir has MAX and MIN markings indicating the upper and lower limits. When the engine is cold, if the fluid level is below the MIN mark, add more antifreeze according to the markings on the reservoir, ensuring it stays between the MAX and MIN levels. Additional relevant details are as follows: 1. The first addition is done when the vehicle is stationary. While adding, gently squeeze the rubber hose until the fluid level reaches the midpoint between LOW and HIGH. 2. The second addition is done after driving the vehicle for a short distance. Observe whether the antifreeze level has dropped. If it has, wait for the engine to cool down after parking and add more antifreeze until it reaches the level from the first addition. Overfilling antifreeze can cause overflow, while insufficient antifreeze can lead to poor engine cooling and potential engine damage.

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What size tires fit 17-inch rims?

17-inch rims should be paired with 17-inch tires. When replacing tires, you can refer to the size specifications of the original tires on your car and purchase tires with the same specifications. It is crucial to select the correct size when buying tires, as incorrect sizes cannot be installed. Additional relevant information is as follows: 1. Tires are rubber products, and rubber deteriorates over time. Therefore, tires need to be replaced periodically. Under normal circumstances, tires installed on a car can last for four years, so it is recommended to replace them every four years. When purchasing new tires, always check the production date, which is indicated by a four-digit number printed on the side of the tire. 2. Tires have a shelf life. Normally, unused tires have a shelf life of three years. If a tire has been sitting unused for more than three years, it should not be purchased. After installing new tires, it is essential to perform a dynamic balance test on each wheel to prevent abnormal vibrations at high speeds. If abnormal vibrations occur during high-speed driving, it can affect the stability and safety of the vehicle.

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How to Cancel Mercedes-Benz ECO Mode?

To cancel the Mercedes-Benz ECO mode, simply press the red triangle button on the air conditioning panel. More information about ECO mode is as follows: 1. Mercedes-Benz ECO is an energy-saving mode that helps to conserve energy when activated. 2. The main principle of ECO mode is to comprehensively analyze and judge factors such as automatic transmission gear, engine speed, vehicle speed, braking, and transmission oil temperature during driving, which affect fuel consumption. The ECU control unit calculates the optimal fuel amount to provide to the engine, effectively reducing fuel consumption compared to normal driving mode.

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What are China 5 and China 6 vehicles?

China 5 refers to the National Fifth Stage Emission Standards for Motor Vehicles, abbreviated as China 5 Emission Standards. The China 6 standard is divided into China 6a and China 6b standards. Compared to the China 5 standard, China 6a only requires lower carbon monoxide emissions. The China 6b standard is more stringent than China 5 in all aspects. China 6a serves as a transitional phase from China 5 to China 6, with China 6b expected to be implemented by 2023. Below are the differences between China 5 and China 6: 1. The China 6 standard imposes 40% to 50% stricter emission limits compared to China 5. 2. China 6 adopts a fuel-neutral principle, meaning emission limits are the same regardless of the fuel type. In contrast, under China 5, diesel and gasoline vehicles had different emission standards. 3. Compared to China 5, China 6 reduces nitrogen oxides (NOx) by 77% and particulate matter (PM) by 67%. It also introduces a limit on particulate number (PN) and tightens requirements for emission control device durability and on-board diagnostics (OBD). 4. China 6 enforces stricter compliance and regulatory requirements, including type approval and information disclosure, production conformity checks, new vehicle inspections, and in-use compliance checks, while simplifying the compliance determination method.

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What are the differences between the A45 and A45S?

What does the circle aoff on the car mean?

Is There a Big Difference Between 95 and 92 Gasoline?

How many liters of antifreeze should be added?

What size tires fit 17-inch rims?

How to Cancel Mercedes-Benz ECO Mode?

What are China 5 and China 6 vehicles?

How many cylinders does the CS55 engine have?

Is the left hand of a motorcycle the front brake?

What does AUTO on the air conditioning button mean?

What does it mean when the key malfunction indicator light on the dashboard is on?