What Causes the ETC Electronic Display OBU to Be Tampered With?

What Should Beginner Drivers Pay Attention To?

Here are some precautions for beginner drivers: 1. Pay attention to speed: As long as you are not on the highway, it is advisable for beginners to maintain a stable speed of around 60, which helps with control. 2. Observe the rearview mirrors more often: The rearview mirrors allow you to monitor the road conditions on both the left and right rear sides of the vehicle, especially when changing lanes, reversing, or overtaking, where the rearview mirrors play a crucial role. 3. Maintain a safe distance: Beginner drivers tend to follow too closely. If the car in front brakes or cuts in, beginners often react by immediately hitting the brakes, and sometimes excessive nervousness can lead to oversteering, causing accidents. Therefore, keeping a safe distance from the car in front is crucial. When someone cuts in, slow down appropriately to yield. 4. Use lights correctly: Do not turn on the hazard lights randomly. Turn on the side marker lights at dusk, and fog lights should only be used in foggy conditions with poor visibility.

7

4

Share

Is it necessary to replace brake pads when changing brake discs?

Replacing brake discs does not necessarily require replacing brake pads. If the brake pads still have sufficient thickness, they can be retained. The function of brakes is to reduce speed or bring the vehicle to a stop. Their working principle involves converting the kinetic energy of the moving vehicle into thermal energy through friction between the brake pads and brake drums, as well as between the tires and the road surface, thereby slowing down or stopping the car. Causes of brake failure include: 1. Impurities or poor sealing in the brake master cylinder; 2. Failure of the vacuum booster pump; 3. Contaminated brake fluid; 4. Oil leakage from the brake master cylinder or wheel cylinder; 5. Air leakage from the air reservoir or pipeline connections; 6. Severe overloading; 7. Carbonization of the brake drum; 8. Insufficient brake fluid in the brake master cylinder; 9. Wear of the brake master cylinder piston.

11

3

Share

What Causes an Increase in Coolant?

The main reason for an increase in coolant is engine cylinder leakage. Below is some information about automotive coolant: 1. Coolant is a crucial substance in the cooling system, circulating in the radiator and carrying away engine heat through the pipes. In addition to antifreeze and cooling, it also has excellent properties such as preventing boiling in summer, rust removal, and corrosion resistance. 2. The replacement cycle for coolant is approximately 2-3 years or around 60,000 kilometers. Generally, within this period, the coolant can perform effectively. However, it should be replaced earlier if the vehicle is used frequently or operates in harsh driving conditions. Extended content: Consider replacing the coolant if the following situations occur: 1. The color of the coolant in the reservoir has changed significantly from its original color; 2. Sediments or floating impurities are visible in the coolant; 3. The coolant level has exceeded the minimum limit; 4. Instrument testing shows insufficient freezing point of the coolant; 5. The engine temperature is too high.

17

1

Share

Should You Shift Gears or Engage the Handbrake First When Driving?

When driving, the sequence of shifting gears and engaging the handbrake mainly involves the following two scenarios: 1. For manual transmission vehicles, you should shift gears first and then release the handbrake. This is to prevent the vehicle from rolling backward if parked on a slope. By shifting gears before releasing the handbrake, you can avoid the issue of the car rolling. 2. For automatic transmission vehicles, the order does not matter—whether you shift gears first or engage the handbrake first, as long as safety is ensured. Additional details: 1. Manual transmission vehicles use a manual gear-shifting mechanical transmission to adjust speed, meaning the driver must manually move the gear lever to change the gear engagement inside the transmission, altering the gear ratio to shift. 2. Automatic transmission vehicles do not require the driver to manually shift gears; the vehicle automatically selects the appropriate gear based on driving speed and traffic conditions.

11

5

Share

How are sedans generally classified?

Sedans can be classified based on wheelbase, engine displacement, and weight. Below are the specific classification methods: 1. Class A vehicles: A00-class sedans have a wheelbase between 2 meters to 2.2 meters and an engine displacement of less than 1 liter; A0-class sedans have a wheelbase of 2.2 meters to 2.3 meters and a displacement of 1 liter to 1.3 liters; Generally, Class A vehicles have a wheelbase ranging from approximately 2.3 meters to 2.45 meters and a displacement of about 1.3 liters to 1.6 liters. 2. Class B vehicles: B-class mid-range sedans have a wheelbase of about 2.45 meters to 2.6 meters and a displacement ranging from 1.6 liters to 2.4 liters. 3. Class C vehicles: C-class premium sedans have a wheelbase of approximately 2.6 meters to 2.8 meters and an engine displacement of 2.3 liters to 3.0 liters. 4. Class D vehicles: D-class luxury sedans mostly feature a majestic appearance, extremely spacious interiors, and very powerful engines. Their wheelbase is generally greater than 2.8 meters, and the displacement is mostly above 3.0 liters.

17

4

Share

What is the fuel consumption of the BYD S7 2.0?

BYD S7 has a total of 23 models on sale. Among them, models equipped with a 2.0T 205 horsepower L4 engine, such as the BYD S7 2017 2.0T Automatic Luxury, BYD S7 2017 2.0T Automatic Honor, BYD S7 2017 2.0T Automatic Premium, BYD S7 2017 2.0T Automatic Flagship, BYD S7 2015 2.0T Automatic Premium, and BYD S7 2015 2.0T Automatic Luxury, have an NEDC fuel consumption of 8.6L per 100km. Models like the BYD S7 2015 2.0T Upgraded Automatic Premium, also equipped with a 2.0T 205 horsepower L4 engine, have an NEDC fuel consumption of 8.8L per 100km. The fuel tank capacity varies among different BYD S7 models. The distance that can be covered on a full tank of fuel is as follows: Models equipped with a 205 horsepower engine and an NEDC fuel consumption of 8.6L per 100km have a fuel tank capacity of 72L. The distance that can be covered on a full tank is 72/8.6*100=837km. Models equipped with a 205 horsepower engine and an NEDC fuel consumption of 8.8L per 100km have a fuel tank capacity of 72L. The distance that can be covered on a full tank is 72/8.8*100=818km. The fuel consumption of a car is directly related to five major factors: driving habits, the car itself, road conditions, natural wind, and environmental temperature. Specific factors that can increase fuel consumption are as follows: Driving habits: Aggressive driving, such as sudden acceleration, frequent overtaking, and not easing off the throttle before a red light, can increase fuel consumption. The car itself: Cars with larger engine displacements generally consume more fuel than those with smaller displacements because larger displacements usually mean greater power, requiring more gasoline to burn and perform work. Cars with greater weight consume more fuel because greater weight requires more driving torque. Road conditions: Driving on dirt roads, muddy roads, soft surfaces, or mountainous roads increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases car resistance and fuel consumption. Low environmental temperatures mean the engine block is colder, and the gasoline injected during a cold start does not atomize easily, requiring more gasoline to be injected for combustion, thus increasing fuel consumption. Additionally, at lower temperatures, the engine computer controls the engine to run at higher RPMs to warm up, which also increases fuel consumption.

1

2

Share

What Causes the ETC Electronic Display OBU to Be Tampered With?

What Should Beginner Drivers Pay Attention To?

Is it necessary to replace brake pads when changing brake discs?

What Causes an Increase in Coolant?

Should You Shift Gears or Engage the Handbrake First When Driving?

How are sedans generally classified?

What is the fuel consumption of the BYD S7 2.0?

What is the method for resetting tire pressure on an Audi?

What maintenance items are required at 20,000 kilometers?

Should Car Maintenance Be Done at a 4S Shop or a Repair Shop?

What Are the Reasons for a Sudden Failure to Start an Electric Vehicle?