Can a Dash Cam Be Repaired?

What Does It Mean When the Key Light on the Car Is On?

When the key warning light illuminates, it indicates an issue with the car's anti-theft system or the vehicle key. The most common cause is a depleted battery in the smart key. In this case, replacing the key battery will resolve the issue once successful. Below is more information about car indicator lights: 1. Seat Belt Indicator: This light shows whether the seat belt is locked. When illuminated, it means the seat belt is not properly fastened. Some models may also emit a warning sound. The light turns off automatically once the seat belt is secured. 2. Door Indicator: This displays the status of all vehicle doors. If any door is not closed or not properly shut, the corresponding door indicator will light up to alert the driver. The indicator turns off when the door is closed properly. 3. Oil Pressure Indicator: This indicates the oil pressure status within the engine. The light turns on when the ignition is switched on and the vehicle undergoes self-check, then turns off after the engine starts. If the light remains on, it means the engine oil pressure is below the required standard and requires maintenance. 4. Fuel Level Indicator: This shows the amount of fuel in the vehicle. During self-check when the ignition is turned on, the fuel light briefly illuminates before turning off. If the light stays on after starting the engine, it indicates low fuel level in the vehicle.

3

1

Share

Can You Continue Driving with Overheated Wheel Hubs?

If you haven't used the brakes frequently during driving, the wheel hubs generally won't overheat. If overheating occurs, it's necessary to inspect the wheel hub bearings and the braking system. If you encounter overheated brakes, never pour water on them; allow them to cool naturally. Otherwise, the brakes may deform, affecting braking performance, and the tires may crack. Causes of overheated wheel hubs: 1. Frequent braking: Repeatedly applying the brakes while driving can cause the brake discs to heat up, leading to brake pad damage and potential brake failure. Additionally, overheated brake discs can raise the temperature of the wheel hubs. 2. Worn wheel hub bearings: Overly tight assembly or abnormal wear of the wheel hub bearings can cause the wheel hubs to overheat, and in severe cases, the bearings may burn out. 3. Lack of lubrication in bearings: If the temperature is too high, the grease inside the bearings may melt and leak, affecting braking performance and causing the wheel hubs to overheat. 4. Abnormal brake caliper retraction: If the brake caliper fails to retract properly, the brake pads may lock, keeping them in constant friction with the brake discs, resulting in brake drag. In such cases, the temperature of the brake drums and wheel hubs will also rise.

6

0

Share

What is the speed of 50 mph?

50 mph is approximately equal to 80 kilometers per hour. 'Mph' is not the same as 'kilometers'; 1 mph equals 1.609 kilometers. In foreign countries, vehicle speed is measured in mph, which stands for miles per hour, distinguishing it from the kilometers per hour (kph) used domestically. 'Mph' and 'kilometers' are completely different units. Many people mistakenly equate 'mph' with 'kilometers per hour.' 'Mph' refers to miles, based on unit conversion. The difference between mph and yards: The units are different; mph is measured in miles per hour, while yards are measured in kilometers per hour. The speed expressions also differ. For example: 80 yards refers to a driving speed of 80 kilometers per hour, equivalent to 80 ÷ 1.6093 = 49.7 mph. One yard is approximately equal to 0.9144 meters. On the other hand, 80 mph refers to a driving speed of 80 miles per hour. One mile equals 1609 meters, which is equivalent to 1.609 kilometers. Therefore, 80 mph is approximately equal to 128.75 kilometers per hour.

15

3

Share

How Long Does It Take to Receive a Red Light Violation Ticket?

If you are caught by non-on-site enforcement and check at the vehicle management office or traffic police station, the violation can usually be queried the next day. For online queries, it typically takes 3-7 days to see the results. If waiting for an SMS notification, you will generally receive it within 10 days. How to Check for Red Light Violations: Common methods include the following: You can check for red light violations through the "Traffic Management 12123" app. After opening the app, log in using your ID card, then locate and click on the "Violation Handling" option. Under this section, you can view the current status of your vehicle. If there are any violations, the specific details will be displayed. Visit the service halls of traffic police branches in various districts or counties to check using touch-screen terminals. Log in to the official external service websites of the Public Security Traffic Management Bureau in your city. Find the "Vehicle Violation Query" section, enter your license plate number and vehicle engine number, then click "Query." According to Article 2, Section 1, Clause 2 of the "Scoring Standards for Road Traffic Safety Violations," driving a motor vehicle in violation of traffic signal lights will result in a 6-point deduction. Article 3, Section 1, Clause 8 states that driving a motor vehicle in violation of prohibitory signs or markings will result in a 3-point deduction.

14

2

Share

Will there be any problems with gasoline if the car is not driven for a long time?

There will be problems with gasoline if the car is not driven for a long time. Over time, the quality of gasoline deteriorates. If left unused for too long, the gasoline will oxidize and degrade, which may lead to incomplete combustion, carbon buildup, clogged fuel lines, unstable idling, and impaired engine performance, among other issues. Here are some precautions for using the fuel tank: 1. Do not wait until the fuel warning light comes on to refuel: Before driving, check the fuel gauge and calculate whether you need to refuel based on the distance of your trip and the fuel gauge reading. It is advisable to refuel in advance rather than waiting for the fuel light to come on. The fuel pump is located inside the tank and operates at high temperatures when continuously working. Being submerged in fuel helps to cool it effectively. When the fuel light comes on, it indicates that the fuel level is below the pump. Refueling only when the light is on will shorten the lifespan of the fuel pump, and having too little fuel in the tank may even cause the pump to burn out. 2. Choose to refuel in the morning or evening: Generally, temperatures are lower in the early morning and evening, and the vaporization point of gasoline is relatively low, so it is best to refuel during these times. Gasoline expands with heat and contracts with cold, and it is charged by volume. At lower temperatures, gasoline has a higher density, meaning the mass per unit volume increases, allowing you to get more fuel for the same price. 3. Avoid filling the tank completely when driving in the city: When driving in urban areas, there is no need to fill the tank completely. A full tank adds extra weight to the engine, increasing fuel consumption. Since refueling is convenient in the city, there is no need to fill the tank to the brim.

20

3

Share

What are the "Unspoken Rules" of Subject 3 Driving Test?

Here are explanations of the six major "unspoken rules" for Subject 3: 1. Stay alert to prevent the examiner from braking: Since Subject 3 is an on-road test with unpredictable traffic and pedestrians, you must maintain full awareness throughout. Not only should you slow down during test items, but also whenever potential hazards arise. If you fail to react to safety risks, the examiner may intervene by braking, resulting in automatic failure. 2. Ensure gear is in neutral when starting: Normally, you only need to start the engine at the beginning. However, some candidates might stall due to improper operation during the test. While stalling usually just deducts points, restarting without shifting to neutral will cause immediate failure. Remember: after stalling, shift to neutral before restarting. 3. Never look down while shifting gears: Many candidates develop the bad habit of glancing at the gearshift during operations. This dangerous behavior is strictly prohibited during tests. Correct this habit early in practice. 4. Maintain turn signals for 3+ seconds before turning: Operations like starting, lane changing, overtaking, turning, U-turns, and parking all require turn signals. Always check surroundings first, then ensure signals are on for over 3 seconds before maneuvering to avoid point deductions. 5. Use reference points for straight-line driving: While keeping the steering wheel straight seems simple, many fail this item. Actually, minor adjustments are needed to maintain true straight-line movement. Effective techniques include focusing far ahead and using peripheral vision to align with road markings or roadside objects as references. 6. Complete test items as specified: Most items are straightforward, but pay special attention to simulated lighting tests and parking. Avoid activating lights prematurely during lighting simulations - you have 5 seconds after the prompt. For parking with distance limits, slow down after the prompt to avoid exceeding the allowed range due to traffic conditions.

2

5

Share

Can a Dash Cam Be Repaired?

What Does It Mean When the Key Light on the Car Is On?

Can You Continue Driving with Overheated Wheel Hubs?

What is the speed of 50 mph?

How Long Does It Take to Receive a Red Light Violation Ticket?

Will there be any problems with gasoline if the car is not driven for a long time?

What are the "Unspoken Rules" of Subject 3 Driving Test?

Can You Be Fined for Parking on the Roadside with Hazard Lights On?

How to Adjust Low Beam Headlights That Illuminate Too Close?

What is the difference between 2 valves and 4 valves per cylinder?

How to Align with the Ground Arrows in Subject 2?