What Does Maintenance Include?

What to Do When Vehicle Tire Pressure is Too Low?

Tire pressure that is too low can be addressed in two ways: 1. If the vehicle can still be driven, proceed to the nearest tire repair shop for assistance. 2. If the tire pressure is too low to drive, use an onboard air pump to inflate the tire slightly before heading to the nearest repair shop, or replace it with a spare tire and then go for repairs. Below are some tips for checking tire pressure: 1. Inspect the tire condition before setting off. 2. While driving, listen for any unusual friction sounds between the tires and the road, pay attention to the cushioning effect when driving over surfaces, and check if acceleration feels different than usual. 3. Under normal circumstances, have the tire pressure checked and topped up at a professional tire repair shop every week. Note: Generally, it is recommended to check tire pressure at least once a month. Adjust tire pressure with each seasonal change, with ideal adjustment times being November and May. In November, as winter approaches, tire pressure usually drops and should be slightly adjusted. In May, as the weather starts to heat up, check if the pressure is normal. Importantly, if the tire pressure is not significantly above the standard range, avoid deliberately lowering it.

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What does MAX A/C mean in a car?

The MAX A/C button on a car's air conditioning system refers to the maximum cooling mode, which is the coldest setting. MAX A/C is a unique button found in some vehicle models. Pressing this button maximizes the distribution of cooled air through the dashboard vents, making the air conditioning system more efficient in cooling. This function is particularly useful when you need to quickly lower the temperature inside the car. While rapidly cooling the interior, be mindful not to place any decorations in front of the air conditioning vents, as this can affect the cooling efficiency. The principle of car AC cooling is as follows: When the AC switch is turned on, the clutch inside the air conditioning compressor engages. The compressor is then driven by the engine's crankshaft via a belt, compressing the refrigerant within the system. This process transforms the low-temperature, low-pressure refrigerant into a high-temperature, high-pressure gas. The refrigerant then passes through the condenser, where it is liquefied and cooled, turning back into a low-temperature, low-pressure refrigerant. Finally, it flows to the evaporator. As hot air passes over the evaporator with the help of the blower, the low-temperature, low-pressure refrigerant absorbs heat from the surrounding air, converting the hot air into cool air that is then blown into the car's interior.

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What is the Appropriate Gauge for Jumper Cables?

For small vehicles, a 16-gauge jumper cable is suitable, while for large engineering vehicles, a 25-gauge is recommended. Below is an introduction to jumper cables: Selection of cables: For small vehicles, the national standard pure copper cable should be at least 16-gauge. However, for large engineering vehicles, the national standard pure copper cable should be 25-gauge. If the gauge is lower than the recommended value, it will be difficult to jump-start the engine. With constant power and voltage, the thicker the cable, the lower the resistance, resulting in a higher current transmitted to the motor. It is advisable to use thicker cables or bundle two thinner cables together. Unless specified otherwise, the standard is a 16-gauge copper cable. If specified, a 25-gauge copper cable is required. Precautions for using car batteries: Ensure the auxiliary battery is 12V and the negative terminal is grounded. Also, turn off all unnecessary lights and accessories to prevent electrical accidents. Never reverse the positive and negative terminals of the cables, as this may cause sparks when connecting. Additionally, ensure the cables are tightly connected to the battery terminals (full contact) to avoid sparking during the jump-start process. Start the engine of the vehicle with the auxiliary battery and let it run at medium speed. Then start the engine of the vehicle with the depleted battery.

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What to Do When the Brakes Suddenly Fail?

First, don't panic. If it's a manual transmission, you can forcefully downshift the gear directly to second gear, then release the accelerator. At this point, the car will feel like it's braking sharply. Seize this opportunity to press the clutch, shift to first gear, and turn off the ignition. This will allow the car to come to a gradual stop. Below are some relevant details about brake maintenance: 1. Brake fluid, like other lubricants, has a shelf life. For safety reasons, it is recommended to replace the brake fluid every two years. During use, brake fluid absorbs moisture from the air, which lowers its boiling point from 260°C to 150°C. Lower-quality brake fluids experience a more severe drop in boiling point over the same period. 2. The friction between the brake pads and the brake disc (or drum) generates braking force. This high-speed friction can produce temperatures as high as 800°C. The high temperature quickly transfers from the brake pads to the brake fluid. If the brake fluid boils due to high temperature during braking, it can reduce or eliminate braking force, leading to brake failure and potential danger. 3. Therefore, when testing the boiling point of brake fluid, if it is below 180°C in the master cylinder or below 150°C in the wheel cylinder, the brake fluid is considered degraded and must be replaced. Enhancing driving safety and reducing the occurrence of traffic accidents is a crucial aspect of brake system maintenance.

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Why doesn't the fuel gauge display after refueling?

The abnormal display of the car fuel gauge is usually caused by a malfunction of the fuel float (fuel level sensor). The fuel gauge detects the fuel level through the float, and if the detection signal is distorted, such problems may occur. Some fuel level displays are controlled by the car's computer, and if the computer signal malfunctions, inaccurate display may also occur, although this probability is very low. Additional information: 1. Inside the car fuel tank, a float is connected to a metal rod, operating on the same basic principle as the float in a household toilet water tank. When the water level drops, the position of the float also decreases, which in turn drives a linkage to open the water inlet valve, allowing water to flow in. As the water level rises, the float position also rises, and once it reaches a certain level, the linkage will close the water inlet valve. 2. The measurement unit of the fuel gauge also employs this simple, straightforward, and practical method. However, the end of the metal rod connected to the float is linked to a variable resistor via a movable contact. The position of the float on the fuel surface in the tank, whether high or low, changes the position of the wiper on the variable resistor via the metal rod. This variable resistor is then connected to the car's fuel gauge, and the movement of the gauge pointer is controlled by the amount of current passing through the variable resistor.

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What are the symptoms of a faulty DSG flywheel?

For models equipped with a DSG transmission, when the flywheel is damaged, abnormal noises will occur during driving. When starting the engine, you may hear gear impact sounds, or even failure to engage, preventing startup. Symptoms such as slipping or idling may also occur during startup. Additional information: 1. A damaged flywheel in a car's transmission is usually caused by clutch slipping and overheating. The flywheel in the transmission can fail or crack, and the cracking of the clutch housing can be caused by various factors: imbalance in the crankshaft, flywheel, or clutch assembly; imbalance in the driveshaft; failure of the connection between the flywheel and the engine block. Looseness in the first or second shaft rear bearings of the transmission can lead to imbalance in the transmission's operation. 2. The DSG consists of a dual-clutch assembly formed by two sets of clutch plates, available in wet and dry types. It also features a dual-transmission shaft mechanism composed of a solid shaft and its outer sleeve. The operation of both clutches and gear sets is controlled by a Mechatronic electronic and hydraulic system. The DSG offers faster and smoother gear shifts than manual transmissions, with uninterrupted power output. Compared to traditional automatic transmissions, the DSG automatic transmission is distinctly different, as it does not use a torque converter, allowing for more flexible automatic shifting.

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What Does Maintenance Include?

What to Do When Vehicle Tire Pressure is Too Low?

What does MAX A/C mean in a car?

What is the Appropriate Gauge for Jumper Cables?

What to Do When the Brakes Suddenly Fail?

Why doesn't the fuel gauge display after refueling?

What are the symptoms of a faulty DSG flywheel?

Which car brand has an R logo?

What is SERES car?

Where to Apply for a Motorcycle Driving License?

Under what circumstances can you stop on the highway emergency lane?