What are the common faults of Mercedes-Benz E300L after wading?

What is the age limit for applying for a small car driving license?

The age limit for applying for a small car driving license is 18 years old and above, with no upper limit. According to the new measures issued by the Traffic Management Bureau of the Ministry of Public Security, starting from November 20, 2020, the application for small car and small automatic transmission car driving licenses is open to those aged 18 and above, with the previous upper age limit of 70 years old abolished. For those aged 70 and above who apply for a driving license, additional ability tests such as memory, judgment, and reaction are required, and an annual physical examination is mandatory. Below is an introduction to the driving test subjects: 1. Subject 1: Also known as the theoretical test or driver theory test, it is part of the motor vehicle driving license assessment. 2. Subject 2: Also known as the small road test, it includes five test items: reversing into a garage, parallel parking, stopping and starting on a slope, turning at a right angle, and driving on a curve. 3. Subject 3: Also known as the big road test, it is the road driving skills test in the motor vehicle driver examination. 4. Subject 4: Also known as the theoretical test or driver theory test.

4

2

Share

Which Motor Oil Viscosity Grade is the Highest?

W60 motor oil has the highest viscosity. The number following "W" indeed indicates the oil's viscosity at 100 degrees Celsius, with a larger number representing higher viscosity. The subsequent number primarily denotes the oil's high-temperature resistance performance target—the higher the value, the better the oil's protective function under high temperatures. Below are the functions of motor oil: 1. Friction Reduction: A sufficiently thick oil film separates the relatively sliding component surfaces, thereby reducing wear. 2. Sealing: Motor oil can form a sealing ring between the piston rings and pistons, reducing gas leakage and preventing external contaminants from entering. 3. Rust Prevention: Lubricating oil adheres to component surfaces, protecting them from contact with water, air, acidic substances, and harmful gases. 4. Cushioning: When pressure in the engine cylinder rises sharply, suddenly increasing the load on pistons, piston skirts, connecting rods, and crankshaft bearings, this load is transmitted and lubricated through the bearings, cushioning the impact load. 5. Cleaning: High-quality motor oil can carry carbon deposits, sludge, and worn metal particles from engine components back to the oil pan through circulation, flushing away contaminants generated on the working surfaces of the components via the flow of the lubricating oil.

5

0

Share

Can a Water-Damaged Vehicle Be Exchanged at a 4S Store?

Water-damaged vehicles can be exchanged at a 4S store. For vehicles damaged by floods, you can enjoy exchange support when purchasing a new car at a 4S store by providing the following documents: a water damage claim certificate stamped with the insurance company's official seal (such as a loss assessment form or residual value agreement), the old vehicle's driving license, the old vehicle's registration certificate, and your ID card. Below is an introduction to some auto insurance types: 1. Auto Damage Insurance: Covers losses caused by natural disasters and accidents to the vehicle itself. Recommended for beginners. 2. Third-Party Liability Insurance: Covers losses due to third-party injuries or deaths caused by the vehicle owner. This is a must-have for both your own and others' protection. 3. No-Deductible Insurance: An additional insurance that transfers the responsibility the owner needs to bear to the insurance company, reducing the owner's loss. It is advisable to purchase this if you have both Auto Damage Insurance and Third-Party Liability Insurance. 4. Theft and Robbery Insurance: Covers damages caused by vehicle theft, robbery, or forcible seizure. Recommended for new car owners without garages. 5. Passenger Liability Insurance: Covers losses of drivers and passengers in the vehicle due to traffic accidents. Premiums are usually paid per seat. Recommended for beginners or family vehicles.

1

4

Share

What is the Difference Between Brake Lights and Tail Lights?

Their difference lies in function and brightness. Brake lights are brighter and more glaring, serving a strong warning purpose, while tail lights are softer, with the brightness of ordinary illumination. Below is an introduction to tail lights and brake lights: 1. Tail lights, which are white lights placed as close to the rear of the vehicle as possible, display continuous lighting. They are used to indicate the movement of the vehicle itself and to discern the movement of other vehicles, aiding in judging situations of crossing or overtaking. 2. Brake lights are generally installed at the rear of the vehicle, with the main color being red, enhancing the penetration of the light source. This ensures that vehicles behind can easily detect when the vehicle ahead is braking, even under low visibility conditions, thereby helping to prevent rear-end collisions.

12

3

Share

What is MTF Transmission Oil?

MT stands for manual transmission, and 'isf' denotes oil, so MTF refers to manual transmission oil. It is commonly known as gear oil. Transmission oil is a lubricant that keeps the gear system clean, ensuring the transmission operates smoothly and prolonging the lifespan of the transmission components. Below are common transmission faults: 1. Oil leakage: Oil seeping from the transmission housing or oil pan can be caused by aging seals leading to poor sealing, or manufacturing defects resulting in porosity in the housing. 2. Engine stalling when shifting into gear: If the engine stalls when shifting into D or R, the issue might be due to a faulty lock-up solenoid valve or a stuck lock-up control valve. 3. Locked gear: Incorrect input or output signals from the transmission, or issues with components or wiring, can cause this. Sometimes, communication problems between the transmission computer and other system computers can also lead to this issue. 4. No response when shifting into gear: The vehicle does not move after shifting into D or R and releasing the brake. This is often caused by damage to the input shaft or reverse clutch, or failure of the D/R brake. 5. Abnormal noises: Unusual sounds from the transmission area while driving are usually due to worn parts or improper installation of the transmission.

1

0

Share

What is the reason why the tire pressure alarm does not sound after reset?

The reason why the tire pressure alarm does not sound after reset is that there is a problem with the tire pressure monitoring system, and the tires need to be checked. The following are precautions for car tire maintenance: 1. Pay attention to tire pressure: Pressure is the lifeblood of tires. Both too high and too low pressure will shorten the service life of the tire. If the pressure is too low, the deformation of the tire body increases, cracks are prone to appear on the sidewall, and flexural motion occurs, leading to excessive heat generation, which accelerates rubber aging, fatigue of the cord layer, and breakage of the cords. 2. Regularly check front wheel alignment: Front wheel alignment has a significant impact on tire service life, with front wheel toe-in and camber being the main factors. Excessive camber mainly accelerates shoulder wear (i.e., uneven wear), while improper toe-in mainly accelerates wear on the inner and outer sides of the tire. 3. Pay attention to driving habits: While driving, choose the road surface carefully to avoid sharp objects such as stones, glass, and metal that may puncture or scratch the tires, and avoid contact with chemical spills that may adhere to and corrode the tires. When driving on roads with significant curvature, try to stay in the center to reduce uneven tire wear caused by increased load on one side.

7

2

Share

What are the common faults of Mercedes-Benz E300L after wading?

What is the age limit for applying for a small car driving license?

Which Motor Oil Viscosity Grade is the Highest?

Can a Water-Damaged Vehicle Be Exchanged at a 4S Store?

What is the Difference Between Brake Lights and Tail Lights?

What is MTF Transmission Oil?

What is the reason why the tire pressure alarm does not sound after reset?

Can a Spare Tire Be Used on the Road?

Which Vehicles Require Biannual Inspections?

What Causes Brake Friction Noise?

What cleaning tools are used for interior cleaning?