What is Automotive Headlight Restoration Technology?

What are the reasons for the ABS warning light in the Sagitar being on?

There are multiple states for the ABS light being on, with different causes and solutions for each state, as detailed below: State 1: ABS warning light stays on (most common). Cause 1: The ABS speed sensor's sensing part is covered by dirt, mud, or other contaminants, affecting the sensor's ability to detect the corresponding speed signal. This prevents the ABS computer from determining the vehicle's speed and the wheel's slip rate, thus failing to issue appropriate commands to regulate braking. Solution: Clean the contaminants from the speed sensor and adjust the gap between the speed sensor and the signal ring to restore normal function. Cause 2: Loose connections between system lines or poor contact in the ABS relay lead to signal issues, causing system failure. Solution: Check the line connections and reconnect any loose parts. State 2: The ABS warning light intermittently turns on but turns off when accelerating. Cause: When multiple vehicle electrical devices are in use, the battery voltage drops below 10.5V. The ABS warning light turns off as the engine speed increases and voltage rises. This may also occur due to insufficient power supply voltage to the ABS system, such as poor terminal contact or grounding issues. Solution: Check the battery's specific gravity, inspect the charging system, and examine the power supply (e.g., voltage relay or poor power contact). State 3: The ABS warning light remains on after engine startup and only turns off when the engine is turned off (IGFF). Cause: Poor grounding connection of the ABS hydraulic valve body; loose wiring connections of the ABS hydraulic valve body; ABS computer malfunction. Solution: Loosen and retighten the grounding screw of the hydraulic valve body, cleaning the contact surface if necessary. Check for enlarged gaps in the connectors. Replace the ABS or ABS/ASR computer if needed. State 4: The ABS warning light turns on during high-speed driving. Cause: At high speeds, the ABS computer detects a significant difference between the rear and front wheel speed signals. This may also be due to incorrect tire or wheel rim specifications. Solution: Refer to the vehicle's tire and wheel rim specifications, as indicated on the label near the fuel tank cap. State 5: The ABS warning light intermittently turns on. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: Start the engine, press the brake pedal, push the brake switch linkage down fully with your fingers, then release the brake pedal to complete the self-setting position. Replace the brake light switch if necessary. If the ABS warning light is on, it is recommended not to continue driving, as it indicates a malfunction in the vehicle's anti-lock braking system. During emergency braking, if the wheels lock up, the vehicle may skid uncontrollably, making it difficult for the driver to slow down or adjust the vehicle's trajectory, posing significant safety risks.

17

4

Share

How to Adjust the Mixture Ratio of a Vacuum Carburetor?

The method for adjusting the mixture ratio of a vacuum carburetor is as follows: 1. First, check the tightness of the connections related to the carburetor to ensure normal carburetor suction without air leaks or suction blockages; 2. Turn the carburetor mixture screw clockwise until it stops, then turn it counterclockwise by 1.5 turns; 3. Start the engine and let it warm up for 10 minutes until it reaches normal operating temperature; 4. Adjust the carburetor's idle speed adjustment screw to the lowest possible engine speed that can maintain operation without stalling; 5. Repeatedly adjust the carburetor mixture screw to achieve the highest engine speed. During this process, you will find that after adjusting the mixture screw to a certain position, further counterclockwise rotation will no longer change the idle speed. At this point, leave the mixture screw at the position where the idle speed was just maximized; 6. Repeat steps 4 and 5 until the engine idle speed stabilizes; 7. Quickly twist the throttle grip to accelerate sharply, then release the throttle. Observe whether the engine accelerates and decelerates smoothly. If it does, the adjustment is successful. If not, repeat steps 4 to 6 until the engine accelerates and decelerates smoothly; 8. The engine should maintain idle without stalling for 5 minutes. After adjusting the idle speed, some vehicles may have a very low idle speed. In this case, slightly increase the idle speed to around 1000-1500 RPM. This is because an excessively low idle speed may cause the engine to stall when decelerating from high speed, as the reduced air pressure at the intake port affects the fuel supply to the carburetor's idle jet; 9. During idle speed adjustment, if backfiring occurs in the exhaust pipe during rapid acceleration, it usually indicates a too-rich mixture. Turn the carburetor mixture screw counterclockwise. If the engine stalls or misfires during rapid acceleration, it usually indicates a too-lean mixture. Turn the carburetor mixture screw clockwise. After adjusting the vacuum carburetor mixture ratio, conduct a road test of about 1.5 kilometers. After the test, remove the spark plug and observe the color of the ceramic under the center electrode. A brick-red color indicates normal conditions; a white color indicates a too-lean mixture; a black color indicates a too-rich mixture.

14

4

Share

Does Running a Red Light Capture the Front or the Rear?

Both are captured. Electronic cameras take three photos to determine a red light violation: a photo of the vehicle crossing the stop line at the intersection, showing the red light and license plate; a photo of the vehicle completely passing the stop line, showing the red light and license plate; and a photo of the vehicle continuing to move, comparing changes in the vehicle's position, showing the red light and license plate. Capturing these three photos confirms a red light violation. The act of running a red light is clearly defined in the Road Traffic Safety Law. Article 26 states that traffic signals consist of red, green, and yellow lights. A red light indicates prohibition of passage, a green light permits passage, and a yellow light serves as a warning. A red light is a traffic signal prohibiting passage, and driving through an intersection during a red light constitutes a traffic violation. Here are some tips to avoid running a red light: Check the arrow light first, then the circular light: Currently, there are two types of traffic lights: arrow traffic lights and circular traffic lights. When an arrow light is present, check the arrow light first, then the circular light to avoid running a red light. Note: When encountering a circular red light, you may turn right; however, if the right-turn arrow is red, you cannot turn right, or you will be penalized for running a red light. Brake in time: When the red light turns on, do not let the front of your vehicle cross the stop line. If the front wheels accidentally cross, and the rear wheels follow, the electronic camera will capture it, resulting in a penalty for running a red light. If the front wheels have just crossed the stop line when the light turns red, do not proceed; wait for the green light before moving. Check the green light countdown before proceeding: When the green light is flashing, if there is a countdown, use it to judge whether to proceed. If there is no countdown, and you are close to the intersection with sufficient speed, you may proceed to avoid running a red light due to late braking. If your speed is slow and you are far from the intersection, brake immediately to avoid running a red light. Article 38 of the Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China states: When the green light is on, vehicles are permitted to proceed, but turning vehicles must not obstruct the passage of straight-moving vehicles or pedestrians. When the yellow light is on, vehicles that have already crossed the stop line may continue. When the red light is on, vehicles are prohibited from proceeding. At intersections without non-motorized vehicle or pedestrian signals, non-motorized vehicles and pedestrians should follow the motor vehicle signals. When the red light is on, right-turning vehicles may proceed if they do not obstruct the passage of other vehicles or pedestrians. Running a red light is not considered illegal in the following situations: Extreme weather: When visibility is so low that even electronic police cannot clearly see the traffic lights, the evidence photos may be blurred. In such cases, accidental red light violations will not be penalized by traffic police. Emergency situations: When rushing a critically ill patient to the hospital, running multiple red lights is likely, and 12 penalty points may not suffice. After delivering the patient, the driver can provide hospital or patient documentation to traffic police for verification. If confirmed, the violation records will be cleared. If possible, calling an ambulance is recommended to avoid accidents caused by running red lights. Police direction: During peak hours, traffic police may temporarily direct traffic at key intersections. Drivers must follow the hand signals of the traffic police.

8

2

Share

Can ETC be used on another car?

ETC cannot be used if the vehicle information it is bound to does not match. Different vehicle types have different highway toll fees. According to the "Rules for the Use of Non-Stop Fast Pass System," when applying for ETC, the ETC card and OBU device are already bound to the vehicle, and the relevant vehicle information is imported, forming a one-to-one correspondence. If you replace your car with a new one and get a new license plate, you need to cancel the original ETC and reapply for the new car. If it's a new car with an old license plate, you can simply update the vehicle information at an offline service center. ETC is a non-stop electronic toll collection system. ETC lanes are set up for vehicles equipped with ETC onboard devices, using electronic tolling. The electronic toll collection system is an automated toll system for highways or bridges. ETC billing principle: There will be one or more ETC lanes on the highway. Through dedicated short-range microwave communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station, computer networking technology is used to settle transactions with the bank in the background. This achieves the goal of vehicles not needing to stop at toll booths to pay highway or bridge fees, all based on the principle of passing first and deducting fees later. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in line; Green and eco-friendly: Low-carbon, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions and minimizing pollution; Reduced wear and tear: Saves costs by reducing the frequency of vehicle starts and brakes, lowering wear and fuel consumption. Users also enjoy a 5% discount on toll fees; Improved efficiency: Theoretically, ETC lanes can increase vehicle passing efficiency by 2-3 times, making traditional ETC faster, newer, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council explicitly stated in the "13th Five-Year Plan for the Development of a Modern Comprehensive Transportation System" that "by 2020, the interoperability of transportation cards in key city clusters will be basically achieved, and the proportion of vehicles equipped with ETC will significantly increase." It also set a target in the "13th Five-Year" comprehensive transportation development indicators: "By 2020, the ETC usage rate for road passenger vehicles should reach 50%." More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and increasing the ETC adoption rate among passenger vehicles, efforts will also be made to promote ETC usage for trucks. There will be exploration of deeper integration between the ETC system and smart transportation development directions such as vehicle-to-vehicle communication and vehicle-road coordination, providing comprehensive travel services for car owners. This means more application scenarios will support ETC usage. ETC usage precautions: The ETC transaction sensing range is 8 meters. If the vehicle in front stops, to prevent issues such as the front vehicle's ETC device malfunctioning or not having an ETC device at all, maintain a distance of more than 10 meters to avoid automatic sensing and paying for the front vehicle. The recognized speed for ETC lane passage is 20 km/h. If the speed is too fast, the vehicle's device information cannot be read, leading to billing failure. Unauthorized disassembly or movement of the OBU device, or detachment or loosening of the ETC electronic tag, will render the electronic tag invalid. It can be taken to the bank where the ETC card was issued or the highway service center for inspection. If the loosening or detachment is not due to human interference, reactivation is sufficient. When using a debit card bound to ETC, insufficient balance will also cause billing failure. Follow the guidance of on-site staff to use the manual MTC lane and pass by paying cash or swiping a card. If the car's windshield is too thick, it may cause poor sensing. This is particularly important for vehicles that have had their windshields replaced after accidents or for those who have modified their front windshields.

9

4

Share

Where to Generally Place a Motorcycle Helmet?

Motorcycle helmets are generally placed in the following locations: Under the motorcycle seat: Place the helmet under the motorcycle seat. This requires the motorcycle to have sufficient storage space. Apart from scooters, few motorcycles on the market have such large storage compartments. On the motorcycle handlebars: You can directly place the helmet on the motorcycle handlebars, but this makes it easy for others to steal. Carry it with you: After riding the motorcycle, always carry the helmet in your hand. Lock it with a helmet lock: Purchase a helmet lock and secure the helmet to the motorcycle.

13

4

Share

How many kilometers should a new car drive before rotating the four wheels?

Tire rotation is generally recommended to be performed approximately every 10,000 kilometers; if the tire tread wears evenly, the rotation interval can be extended, and you may consider rotating them around 20,000 kilometers. Reasons for tire rotation: The front and rear tires bear different forces during driving, leading to varying degrees of wear. Over long-term driving, this wear difference becomes more pronounced. Rotating the tire positions can help reduce the disparity in wear during subsequent driving, minimizing the risk of dangerous incidents such as tire blowouts. Precautions: Regularly inspect tire wear conditions. If severe uneven wear is detected, promptly rotate the tires.

3

0

Share

What is Automotive Headlight Restoration Technology?

What are the reasons for the ABS warning light in the Sagitar being on?

How to Adjust the Mixture Ratio of a Vacuum Carburetor?

Does Running a Red Light Capture the Front or the Rear?

Can ETC be used on another car?

Where to Generally Place a Motorcycle Helmet?

How many kilometers should a new car drive before rotating the four wheels?

What Causes the Jerking Sensation When Pressing the Accelerator?

What is the appropriate high beam setting for headlights?

Why do domestic cars not hold their value?

What does a yellow exclamation mark on the dashboard mean?