What Causes the 4WD Warning Light to Illuminate?

How many questions are there in Subject 1?

There are 100 questions in the Subject 1 test for the driver's license examination. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," the test consists of single-choice questions and true/false questions, with each question worth 1 point, totaling 100 points. If 11 questions are answered incorrectly during the test, the system will automatically submit the test and end the examination. Subject 1, also known as the Subject 1 theory test or driver theory test, is part of the motor vehicle driver's license assessment. The test content includes theoretical foundations of driving, road safety laws and regulations, local regulations, and related knowledge. The test is conducted on a computer, with a time limit of 45 minutes. Subject 1 test content: Driver's license and motor vehicle management regulations; road traffic conditions and regulations; road traffic safety violations and penalties; road traffic accident handling regulations; basic knowledge of motor vehicles; local regulations; knowledge of braking systems and safety devices for large and medium-sized passenger and freight vehicles; specialized knowledge for wheeled self-propelled machinery, trams, and trolleybuses. Subject 1 test precautions: During the Subject 1 test, students should pay attention to their attire. No slippers are allowed, and electronic devices and bags are prohibited in the examination room. Bring your ID card and queue to enter the waiting hall. Observe the precautions and procedures on the large screen, and store personal belongings in the lockers before entering the examination room. Upon entering the examination room, the identity verification desk will assign a seat. After finding your seat, begin the test. Ensure the camera is aligned with you and follow the test discipline. If you fail the first time, there is a same-day retake. If you fail again, you must pay to reschedule. After the test, queue to collect your score report and sign it. Unsigned reports are considered invalid. There is no limit to the number of times you can schedule the Subject 1 test. Each subject can be taken once, and if you fail, you can retake it once. If you do not attend the retake or fail the retake, the test ends, and the applicant must reschedule. For Subject 2 and Subject 3, there are only five test attempts. Subject 2 and Subject 3 tests can be scheduled ten days later. If you fail the Subject 3 safe driving knowledge test, the previously passed road driving skills test scores remain valid. There are three subjects in the driver's license examination: Subject 1, Subject 2, and Subject 3. Subject 1 refers to the road traffic safety laws, regulations, and related knowledge test; Subject 2 refers to the field driving skills test; Subject 3 is divided into two parts: road driving skills and safe driving knowledge test. The safe driving knowledge test is conducted after Subject 3, so it is commonly referred to as Subject 4. However, the official term (as per the Ministry of Public Security Order No. 123) does not include Subject 4.

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Can You Still Drive When the ABS Warning Light Is On?

When the ABS warning light is on, it is recommended not to continue driving because the 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, making it difficult for the driver to slow down or adjust the vehicle's trajectory, posing significant safety risks. There are several states in which the ABS light may illuminate, each with different causes and solutions, as detailed below: State 1: ABS warning light stays on continuously (most common). Cause 1: The ABS speed sensor's sensing area 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 or the wheel's slip rate, thus failing to issue appropriate commands to regulate braking. Solution: Clean the dirt from the speed sensor and adjust the gap between the sensor and the signal ring to restore normal function. Cause 2: Loose connections in the system wiring or poor contact in the ABS relay can cause signal issues, leading to system failure. Solution: Inspect the 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 the engine speed increases, the voltage rises, and the ABS light turns 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 examine the power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light remains on after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding contact in the ABS hydraulic valve body; loose wiring connections in the ABS hydraulic valve body; or a faulty ABS computer. Solution: Loosen and then retighten the hydraulic valve body's grounding screw, cleaning the contact surface if necessary. Check for enlarged gaps in the connectors and replace the ABS or ABS/ASR computer if needed. State 4: ABS warning light illuminates during high-speed driving. Cause: At high speeds, the ABS computer detects a significant discrepancy between the rear and front wheel speed signals. This can also occur due to incorrect tire or wheel rim specifications. Solution: Refer to the vehicle's tire and wheel rim specifications, as indicated on the fuel tank cap label. State 5: ABS warning light intermittently illuminates. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: Start the engine, press the brake pedal, and use a finger to push the brake switch linkage down fully. Then release the brake pedal to complete the self-setting position. Replace the brake light switch if necessary.

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What is the correct method for starting a manual transmission car at a red light?

Lightly press the accelerator and slowly release the clutch. Once the operation is smooth, look straight ahead, release the clutch a little, and add a little throttle. Use 2500 RPM to shift gears quickly and complete a fast start.

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How to Determine if the Engine Control Unit is Damaged?

There is no issue with the engine, but the malfunction indicator light remains on; If the engine control unit is damaged, the concentration of the combustible mixture will be relatively low, making it naturally difficult to start the vehicle; If the vehicle's performance becomes very poor or it even fails to start.

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How to use the stick on the xrv dashboard?

The small lever on the dashboard is used to switch display information. The odometer displays "ODO". The short-distance odometer A and short-distance odometer B display "TRIP-A"/"TRIP-B". The current fuel consumption is displayed in "L/100km".

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What to Do When the Rear Brake of a Motorcycle Fails?

If the brake pads are excessively worn, they should be replaced promptly. If the rear brake is ineffective due to improper adjustment of the brake cable, it needs to be adjusted. If there is still room for adjustment on the screw, simply tighten the nut again.

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What Causes the 4WD Warning Light to Illuminate?

How many questions are there in Subject 1?

Can You Still Drive When the ABS Warning Light Is On?

What is the correct method for starting a manual transmission car at a red light?

How to Determine if the Engine Control Unit is Damaged?

How to use the stick on the xrv dashboard?

What to Do When the Rear Brake of a Motorcycle Fails?

How to Solve the Electronic Steering Lock Failure of Baojun 510?

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