What does a key symbol on the dashboard mean?

When Does the Car Fan Start Running?

Whether the car's cooling fan starts running depends on the coolant temperature and is not related to time. When the coolant temperature reaches 98°C, the radiator fan will automatically turn on. The car's radiator fan operates automatically and cannot be manually controlled; it does not activate at low temperatures. At medium and high temperatures, it operates at two speed levels. Generally, the fan starts at medium speed at 95°C and switches to high speed at 105°C. Below is some relevant information: 1. Activation or deactivation of the cooling fan: Controlled by the thermal-sensitive switch on the radiator. When the coolant inside the radiator reaches a certain temperature, the thermal-sensitive switch activates the radiator fan. When the coolant temperature rises further, the thermal-sensitive switch increases the fan speed. Once the coolant temperature drops below a certain level, the radiator fan automatically turns off. 2. Fan operation: Only after the engine has been running for a certain period does the temperature rise, increasing the coolant temperature in the radiator. When the coolant temperature reaches 95°C, the fan starts running at approximately 1,600 RPM. When the temperature reaches 105°C, the fan speed increases to about 2,400 RPM to enhance the cooling rate.

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What does the yellow exclamation mark in a Mercedes-Benz C200 indicate?

The appearance of an exclamation mark on the car's dashboard indicates an abnormality or malfunction in the corresponding system. There are many dashboard indicator lights with exclamation marks, such as the tire pressure indicator, lighting fault indicator, steering system fault indicator, brake system fault light, transmission fault indicator, and windshield wiper fault indicator. Below is a detailed explanation of the exclamation mark warning lights: General Fault: A triangle with an exclamation mark inside indicates a general performance or component malfunction in the car. Common issues include parking sensor faults, fuel cutoff system intervention or faults, external light faults, engine oil pressure sensor faults, etc. It is necessary to visit a 4S shop for inspection to identify the source of the fault. Automatic Transmission Fault: A yellow gear with an exclamation mark inside is the automatic transmission fault warning light, indicating a transmission fault or transmission fluid level below the normal range. The transmission fluid should be replaced promptly. Brake System Fault: An exclamation mark inside a circle with parentheses represents a brake system warning, indicating either a brake system malfunction or low brake fluid level. The brake system should be inspected immediately to avoid accidents. Tire Pressure Anomaly: An exclamation mark with a horizontal line below parentheses represents the tire pressure monitoring warning light, which illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting Fault: A yellow bulb with an exclamation mark is the lighting fault indicator, signaling a malfunction in one of the car's lights. Solution: Visit a 4S shop for inspection as soon as possible, or check yourself, focusing on commonly used bulbs such as turn signals, fog lights, and interior lights to identify the issue. Additionally, during daily vehicle use, the dashboard warning lights are divided into two colors—yellow and red—to indicate different levels of severity: Yellow indicates a fault in the corresponding system, but the issue is not very severe. Reduce speed and proceed to a repair shop to eliminate potential safety hazards. Red indicates a very serious problem in the corresponding system. In such cases, do not continue driving. Pull over immediately and seek professional assistance to prevent unpredictable risks to the vehicle and personal safety. Note: When the car is started, all lights will illuminate for an automatic system check and will turn off after the check is completed. If a light does not illuminate when the ignition is turned on, remains lit, or lights up while driving, it indicates a fault in the related system. In such cases, seek professional help promptly for inspection and troubleshooting to eliminate safety hazards.

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What are the signs of a broken car shock absorber?

The signs of a broken car shock absorber are as follows: 1. Body shaking: For cars, shaking the body can be used to judge the performance of the shock absorber. Alternatively, the shaking state of the vehicle after emergency braking can be used to determine. After the shock absorber fails, the number of times the vehicle shakes is significantly more than normal. When the vehicle is stationary, forcefully grab the bumper or hood and shake it, then suddenly release when the shaking reaches its maximum amplitude. 2. Abnormal temperature: The shock absorber converts the mechanical energy of wheel and body vibration into heat energy, which is dissipated in the form of heat, thereby achieving the purpose of attenuating vibration. The more vibration energy absorbed, the higher the temperature of the shock absorber. When the shock absorber's energy absorption is saturated, the temperature basically stops rising. Usually, thermal equilibrium is reached in about half an hour. 3. Oil leakage: If there are oil stains or oil droplets on the cylinder wall and lower suspension ring of the shock absorber, it indicates that the shock absorber is leaking oil. During operation, the high-temperature oil evaporates into oil mist, which often adheres to the cylinder wall. Road dust adheres to it, forming a layer of oil sludge, which is normal.

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How to deal with speeding on the highway by less than 20%?

Exceeding the speed limit by more than 10% but less than 20% will result in a fine of 50 RMB and 3 penalty points. Additionally, exceeding the speed limit by more than 20% but less than 50% will result in a fine of 100 RMB; exceeding the speed limit by more than 50% but less than 70% will result in a fine of 300 RMB; and exceeding the speed limit by more than 70% will result in a fine of 500 RMB. For motor vehicles speeding by more than 10% but less than 20%, different penalties apply depending on the situation: 1. For speed limits below 50 km/h: exceeding the speed limit by more than 10% but less than 20% will result in a fine of 50 RMB and 3 penalty points; 2. For speed limits between 50 km/h and 80 km/h: exceeding the speed limit by more than 10% but less than 20% will result in a fine of 100 RMB and 3 penalty points; 3. For speed limits between 80 km/h and 100 km/h: exceeding the speed limit by more than 10% but less than 20% will result in a fine of 150 RMB and 3 penalty points; 4. For speed limits above 100 km/h: exceeding the speed limit by more than 10% but less than 50% will result in a fine of 200 RMB and 3 penalty points.

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What does N mean in an automatic transmission?

In an automatic transmission vehicle, N stands for Neutral. It is used for temporary parking, stopping the vehicle's movement without interrupting power. For example, when waiting at a traffic light, you should also engage the handbrake. This gear should not be used when going downhill. The P, R, N, and D in an automatic transmission vehicle represent the corresponding gears, simply summarized as P for Parking, R for Reverse, N for Neutral, and D for Drive. PRNDS represents the gears: 1. D-Drive: The most commonly used gear, where shifting up or down can be controlled by the throttle. 2. P-Parking: After the vehicle stops, engaging P gear prevents the vehicle from moving. Unlike N gear, P gear interrupts power output. Some models now have an independent P gear called electronic parking, which works on the same principle. 3. N-Neutral: Used for temporary parking, stopping the vehicle's movement without interrupting power. For example, when waiting at a traffic light, you should also engage the handbrake. This gear should not be used when going downhill. 4. R-Reverse: This gear can only be engaged when the vehicle is stationary. Models with a lock button require pressing the button to switch. 5. S-Sport: The difference between D and S gears is simply the computer switching to a different shifting program, so S gear can be switched to at any time without damaging the transmission. It is suitable for overtaking and climbing hills but is not recommended for other scenarios due to higher fuel consumption. 6. L-Low: When going downhill, engaging low gear reduces brake usage; when going uphill, low gear provides more power. D1 (or L gear), D2, and D3 correspond to manual transmission gears 1 and 2, 3 and 4, and 5 and 6, respectively. 7. M-Manual mode: A gear unique to vehicles with manual-automatic transmission, allowing the enjoyment of manual shifting. The '+' sign indicates upshifting, while the '-' sign indicates downshifting. Downshift for overtaking, downhill driving, or when entering a highway.

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How to Clean Diesel Fuel Spilled in a Car?

Special cleaning agents can be used to thoroughly clean diesel fuel from the car, followed by washing with soapy water. Here is relevant information: 1. Gasoline and Diesel: These are the two primary fuels used in motor vehicles, powering gasoline engines and diesel engines respectively. 2. Differences Between Them: Gasoline engines operate on spark ignition, while diesel engines rely on compression ignition. This means diesel engines lack spark plugs, with combustion occurring spontaneously due to high temperature and pressure within the cylinder. Diesel fuel injectors are more precise and operate at higher injection pressures compared to gasoline injectors.

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What does a key symbol on the dashboard mean?

When Does the Car Fan Start Running?

What does the yellow exclamation mark in a Mercedes-Benz C200 indicate?

What are the signs of a broken car shock absorber?

How to deal with speeding on the highway by less than 20%?

What does N mean in an automatic transmission?

How to Clean Diesel Fuel Spilled in a Car?

How to use PICC's agency vehicle inspection service?

How Many Days Before Expiration Should a Driver's License Be Renewed?

Should Fabric Seats Use Seat Covers?

What Does a Business Vehicle Look Like?