What Causes the Obvious Jerking Sensation in BMW 5 Series at Low Speeds?

Why is the car air conditioning not cooling when the pressure is normal?

The reasons why the car air conditioning is not cooling when the pressure is normal are as follows: 1. Lack of refrigerant: Car air conditioners generally need to be refilled with refrigerant every 2~3 years, and some cars even require it annually. Even if the air conditioning system is tightly sealed, it cannot prevent the refrigerant from escaping, as there might be minor leaks in the air conditioning pipes or condenser. 2. Damage to the air conditioning flap: Although it is relatively rare, failures of the air conditioning flap motor are not uncommon. The flap motor is usually located under the dashboard and serves as the main switch for the air conditioning vents. If it is damaged, it means the switch is broken. Even if the air conditioning can cool the air, the cold air can only escape through gaps. 3. Dirty condenser: It is common to find air conditioning failures during summer. When testing the air conditioning system, no issues are found, and both high and low pressures are basically normal. When taking the car to a 4S shop for repair, the owner is often advised to clean the radiator. The main purpose of cleaning the radiator and condenser is to improve heat dissipation. In spring, willow catkins can stick to the condenser, leading to excessively high engine temperatures or air conditioning failure.

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Can Someone Else Take Points Off My Driver's License?

Here is the introduction to whether someone else can take points off your driver's license: 1. Currently, points on a driver's license cannot be transferred to someone else. The person who commits the violation must have their own points deducted. Having someone else take the points is illegal. 2. The deduction of points from a driver's license is recorded. If you sell your points to someone else, the system will automatically assume that the license holder is the person responsible for the violation. 3. If the person who buys the points commits other illegal acts, such as hit-and-run, in addition to the traffic violation, the person who sold the points may bear corresponding legal liabilities. Additional information: Here is why you should not help others remove points from their license: 1. It is illegal. 2. There are restrictions on removing points from a driver's license. 3. If the driver's violation involves a traffic accident, they may bear corresponding legal liabilities. 4. Your available points will decrease. If you commit a violation yourself and don't have enough remaining points, you will have to retake the written test (Subject 1).

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Why does the engine sound change after the vehicle wades through water?

It may be related to water entering the bearings of the engine belt and wheel bearings. The following is a related introduction about vehicle wading: 1. Introduction to vehicle wading: As the name suggests, vehicle wading refers to driving in low-lying areas or on roads with accumulated water, passing through water. This generally occurs in rainy weather, where inadequate drainage equipment leads to water accumulation in low-lying road sections. 2. Precautions for vehicle wading: Before wading, observe the road conditions carefully; maintain stable power while in the water; after wading, check the electrical system. If the car stalls in the water, the main reason is usually water entering the exhaust pipe, and in some cases, there may also be electrical damage. Once the car stalls, do not attempt to restart it, as this may cause water to enter the intake manifold and damage the valves, potentially leading to severe engine damage. Instead, the vehicle should be towed to a 4S shop immediately for professional handling.

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Is the photo on the driver's license brought by oneself or provided?

The photo for the driver's license must be provided by the applicant. Specific requirements are as follows: 1. Photo requirements: A straight-edged, front-facing, bareheaded, color, single-person half-length ID photo taken within the last 6 months before applying for the driver's license. The background should be white; no uniforms should be worn; the portrait should be clear, with rich layers, natural expression, and no obvious distortion. 2. General requirements: A recent (within 6 months before applying for the driver's license or temporary driving permit) straight-edged, front-facing, bareheaded, color, single-person half-length ID photo, without uniforms. Those who require vision correction must wear glasses. The portrait should be clear, with rich layers, natural expression, no obvious distortion, white background, and dark-colored clothing.

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Should the Semi-Clutch State Be Maintained Throughout Subject Two?

Subject Two does not require maintaining the semi-clutch state throughout. Here are the details: 1. Clutch: Pressing the clutch is the first lesson in driving practice and the most fundamental skill for obtaining a C1 driver's license. To pass Subject Two and Subject Three successfully, one must learn how to control the clutch. The clutch primarily controls the separation and combination of power. Pressing it down separates the power, while lifting it combines the power. Press the clutch quickly and release it slowly. When pressing the clutch, ensure it's fully depressed, and when lifting the clutch pedal, do so slowly; otherwise, the car may stall. 2. Note: When the vehicle is moving normally and the clutch is in a fully engaged state, avoid pressing it unnecessarily when not shifting gears. During Subject Three, refrain from pressing the clutch arbitrarily or resting your foot on it. Place your left foot on the empty space to the left of the clutch pedal. The vehicle's clutch should only be used when starting the car, shifting gears, and braking.

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Which National Emission Standard Vehicles Have Three-Way Catalytic Converters?

Regardless of the national emission standard, all vehicles are equipped with three-way catalytic converters. This is because newly manufactured cars must now meet the Euro 3 emission standards, so they all have three-way catalytic converters. Here is some additional information: 1. Three-Way Catalytic Converter: The automotive three-way catalytic converter is the most important external purification device installed in the vehicle's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from the vehicle's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Since this converter can simultaneously transform the three main harmful substances in the exhaust into harmless substances, it is called a three-way catalytic converter. 2. Working Principle: When high-temperature exhaust gases pass through the purification device, the purifying agents in the three-way catalytic converter enhance the activity of CO, HC, and NOx gases, promoting certain oxidation-reduction chemical reactions. CO oxidizes at high temperatures to form colorless, non-toxic carbon dioxide gas; HC compounds oxidize at high temperatures into water (H2O) and carbon dioxide; and NOx is reduced into nitrogen and oxygen. The three harmful gases are transformed into harmless gases, thereby purifying the vehicle's exhaust.

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What Causes the Obvious Jerking Sensation in BMW 5 Series at Low Speeds?

Why is the car air conditioning not cooling when the pressure is normal?

Can Someone Else Take Points Off My Driver's License?

Why does the engine sound change after the vehicle wades through water?

Is the photo on the driver's license brought by oneself or provided?

Should the Semi-Clutch State Be Maintained Throughout Subject Two?

Which National Emission Standard Vehicles Have Three-Way Catalytic Converters?

What are the reversing skills for parking?

Is Gasoline Additive Useful?

Where is the windshield washer fluid reservoir located in a Buick?

What is the maintenance cycle for various car components?