What Are the Routine Maintenance Items for Cars?

What Causes the ABS Light to Illuminate in a Mercedes-Benz?

There are multiple states in which the ABS light may illuminate, with different causes and solutions for each state, as detailed below: State 1: ABS warning light remains constantly lit (most common). Cause 1: The ABS wheel speed sensor's sensing area is covered by dirt, mud, or other contaminants, affecting its ability to detect the corresponding wheel speed signal. This prevents the ABS control module from determining the vehicle's speed and wheel slip rate, thereby disabling its ability to issue commands to regulate braking. Solution: Clean the dirt from the wheel speed sensor and adjust the gap between the sensor and the signal ring to restore normal function. Cause 2: Poor signal transmission due to loose system wiring connections or faulty ABS relay contacts, leading to system malfunction. Solution: Inspect wiring connections and reconnect any loose parts. State 2: ABS warning light intermittently illuminates but turns off during acceleration. Cause: When multiple electrical components are in use, the battery voltage may drop below 10.5V. As engine speed increases, the voltage rises, causing the ABS light to turn off. This can also occur if the ABS system's power supply voltage is too low due to poor terminal contact or grounding issues. Solution: Check the battery's specific gravity, inspect the charging system, and verify the power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light remains lit after engine startup and only turns off when the engine is turned off (IGFF). Cause: Poor grounding connection of the ABS hydraulic valve body; faulty wiring connection of the ABS hydraulic valve body; ABS control module malfunction. Solution: Loosen and retighten the grounding screw of the hydraulic valve body, cleaning the contact surface if necessary; check for enlarged terminal gaps; replace the ABS or ABS/ASR control module. State 4: ABS warning light illuminates during high-speed driving. Cause: The ABS control module detects a significant discrepancy between the rear and front wheel speed signals during high-speed driving; 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: ABS warning light intermittently illuminates. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: With the engine running, press the brake pedal and use a finger to push the brake switch linkage all the way down, then release the pedal to complete self-positioning; replace the brake light switch if necessary. If the ABS warning light is illuminated, it is advisable not to continue driving. An illuminated ABS light indicates a malfunction in the vehicle's anti-lock braking system. During emergency braking, if the wheels lock up, the vehicle may skid uncontrollably, preventing the driver from slowing down or adjusting the vehicle's trajectory, posing significant safety risks.

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What does traffic violation code 1638 mean?

Violation code 1638 means: Driving a truck in violation of regulations by carrying passengers. According to the relevant provisions of the "Road Traffic Safety Law of the People's Republic of China", the penalty includes: Demerit points (deduction): 6 points; Fine amount: 500 to 2000 yuan; Other penalties: Detention of the vehicle. Traffic violation codes consist of four to five digits, classified according to the principles of the traffic law. The sequence from left to right is as follows: the first digit is the behavior classification code, the second digit is the demerit points classification code, the third and fourth digits are the sequential code, and the fifth digit indicates the item number. First digit: Behavior classification code, indicating the category in the Road Traffic Law; Second digit: Demerit points classification code, indicating the category of demerit points for the traffic violation; Third, fourth, and fifth digits: Sequential code, indicating the order of the violation within the same behavior category. For example: 13035—"1" indicates a motor vehicle violation, the second digit "3" indicates 3 demerit points, and "035" indicates the fifth item of the third violation under the 3-point deduction category. Behavior classification code violation descriptions: Codes starting with 1 indicate motor vehicle violations, e.g., 1003; Codes starting with 2 indicate non-motor vehicle violations, e.g., 2002; Codes starting with 3 indicate pedestrian or passenger violations, e.g., 3030; Codes starting with 4 indicate highway violations, e.g., 4002; Codes starting with 5 indicate other regulations, e.g., 5005; Codes starting with 7 indicate provincial, autonomous region, or municipal implementation rules, e.g., 7008; Codes starting with 8 indicate local regulations of cities (prefectures, autonomous prefectures, or leagues), e.g., 8606. There are four common ways to check motor vehicle violations: Visit the office lobby of the traffic police branch in your city or county and use the touch query terminal; Log in to the external service website of your city's Public Security Bureau Traffic Management Bureau, find the vehicle violation query section, enter your license plate number and engine number, and click to query; Call the hotline (area code + 114) to inquire; Use the Traffic Management 12123 app (V2.8.1B437 for iOS 15+ or V2.8.1B274 for Android 12+) to check. For the violation of driving a truck while carrying passengers illegally, you can handle it through the Traffic Management app. After logging in, go to the violation processing section, complete the process, and make the payment.

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How to Repair Chipped Car Paint?

Car paint chips require touch-up. The methods for repairing car paint are as follows: 1. Minor scratches. These can be completely repaired by waxing. Apply the compound in straight lines, then apply wax—first with coarse wax, followed by fine wax, moving in the same direction from the inside out to remove fine scratches. 2. Scratches without exposing the primer. For slightly larger scratches, a touch-up pen can be used. Before use, shake the paint in the touch-up pen well. You can add a certain amount of thinner to the touch-up pen to ensure smooth application. Carefully spray or dab the area that needs repair. Once the touch-up paint has dried, apply fine wax to finish.

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Why Do Beginners Often Stall When Driving?

Below are the reasons why beginners often stall when driving: Beginners are not yet familiar with the vehicle's performance, have inaccurate control over the clutch engagement point, and are unfamiliar with the clutch's travel range. Moving the foot too quickly from the clutch engagement point to fully releasing the clutch can easily cause the vehicle to stall. Beginner drivers tend to be overly cautious, and in situations with heavy traffic or frequent honking from vehicles behind, they are more prone to nervousness, often repeatedly stalling and restarting at traffic lights. Below are solutions to prevent stalling when driving: Fill up with higher-grade fuel at reputable, large gas stations. Thoroughly clean the fuel system, including the fuel injectors, throttle body, and fuel tank. If the vehicle has been parked for an extended period, perform a comprehensive maintenance check before reuse, including changing the engine oil and oil filter, and inspect the fuel and electrical systems as needed.

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What to Do When the Car Hood Won't Open?

Here are the solutions when the car hood won't open: If the car hood latch spring lacks lubrication, add lubricating oil. There is a hood release button under the steering wheel. Pull the button inside the car, and usually, the hood will loosen. Lift the hood, reach inside, and pull a mechanical latch to open the hood. Use a screwdriver to hook and open the hood. Crawl under the car, use a wire to reach the hood lock hole from below the engine, and pull to open the front hood. Open the driver's door, remove the door seal, then make a hook with a thick wire about one and a half meters long. Insert it into the lower right corner to hook the door motor, and the hood can be opened. Take it to a repair shop for professional handling.

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What to Do If Your Vehicle License Is Lost?

"Don't panic if your vehicle license is lost. You can apply for a replacement at the vehicle management office of the original registration location. If your driver's license or vehicle license is lost, the driver should apply for a replacement at the vehicle management office where the license was issued. Cross-region replacement is not supported. Then, take the identity card loss certificate issued by the public security authority to the local police station or public security bureau where your household registration is located to reapply for your ID card. In today's world where theft is increasingly rampant, the probability of wallets being stolen or handbags being lost is also rising. When encountering such unfortunate incidents, apart from the financial loss being distressing, the complete loss of various documents is even more frustrating and urgent. If your vehicle license, ID card, or driver's license is unfortunately lost, don't panic. Follow the preparation steps below to save time and effort in completing the emergency procedures!

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What Are the Routine Maintenance Items for Cars?

What Causes the ABS Light to Illuminate in a Mercedes-Benz?

What does traffic violation code 1638 mean?

How to Repair Chipped Car Paint?

Why Do Beginners Often Stall When Driving?

What to Do When the Car Hood Won't Open?

What to Do If Your Vehicle License Is Lost?

What is the A-circle button in an automatic transmission?

Do 7-seater vehicles require annual inspection?

Does ETC have to be handled by the vehicle owner?

Can Temporary License Plates Still Be Used After Official License Plates Arrive?