How to Check if a Vehicle License is Genuine?

How Long Is the Validity Period of a Driving Permit?

The validity period of a driving permit is three years. Below are the relevant details: 1. After passing the subject one test, the vehicle management office should issue a learning driving permit within one day. The learning driving permit is valid for three years, and the applicant must complete subject two and subject three tests within this period. 2. If the tests are not completed within the validity period, the results of any passed subjects will be invalidated. 3. Extensions cannot be applied for. If the candidate fails to pass all driving license tests within the validity period, the public security department will cancel the candidate's student record, and the candidate must re-register for training and start the tests from the beginning.

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Where is the air conditioning filter for Audi A5 located?

The air conditioning filter for Audi A5 is located under the right front rain tray of the windshield. Generally, the car's air conditioning filter should be replaced every 10,000-15,000 kilometers or once a year. The following are the functions of the Audi A5 air conditioning filter: 1. It ensures the filter fits tightly against the housing, preventing unfiltered air from entering the cabin. 2. It separates solid impurities such as dust, pollen, and abrasive particles from the air. 3. It adsorbs moisture, soot, ozone, odors, carbon oxides, SO2, CO2, etc., from the air, with strong and long-lasting moisture adsorption. 4. It prevents the car windows from fogging up, ensuring clear visibility for drivers and passengers and safe driving. It provides fresh air to the cabin, preventing occupants from inhaling harmful gases and ensuring driving safety. It also effectively sterilizes and deodorizes.

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What is the working principle of the engine starting system?

The working principle of the engine starting system is: the battery provides electrical energy, under the control of the ignition switch and the starter relay, the starter converts electrical energy into mechanical energy, drives the engine flywheel ring gear and crankshaft to rotate, and the starting work can cycle, so that the engine enters the self-running state. The working process of the car starting system: 1. Turn the ignition switch to the ON position with the key, the instrument is powered on, and after a few seconds, the car enters the ready-to-start state; 2. Turn the ignition switch to the START position to connect the circuit of the battery and the starting system; 3. The starter relay is energized; 4. After the starter is energized, the main shaft rotates under electromagnetic action; 5. The drive gear on the main shaft of the starter rotates, driving the engine flywheel and crankshaft to rotate; 6. Under normal circumstances, after a brief start, the engine can enter the automatic running state.

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Which lights should be turned on for vehicles at night?

When driving at night, you should turn on the low beam headlights, and always use the turn signals when making a turn. Here is a partial introduction about the use of lights: 1. Urban roads are well-equipped with lighting facilities, so there is no need to turn on the high beam headlights. However, if you encounter a situation where there is insufficient lighting ahead, you should turn on the high beam headlights because they are positioned higher than the low beam headlights, allowing them to illuminate objects that are far and high. 2. Low beam headlights are designed for close-range illumination. Their design requires a wide illumination range but a short illumination distance, and the focus cannot be adjusted. 3. City roads have heavy traffic. Using high beam headlights not only causes glare for oncoming vehicles but also affects the visibility of pedestrians on both sides of the road.

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Is the Recirculation Light On or Off?

The air conditioning system's recirculation and fresh air buttons generally come in two types. The first type has separate buttons for recirculation and fresh air modes, where an illuminated light indicates the active function mode. The second type combines both functions into a single button, where an illuminated indicator signifies recirculation mode, while an unlit indicator means fresh air mode. More details are as follows: 1. The purpose of the air conditioning recirculation mode is to prevent outside air from entering the vehicle. When outside temperatures are extremely high or low, using recirculation mode allows the air conditioning system to operate in this mode briefly, quickly lowering or raising the interior temperature. 2. The fresh air mode allows outside air to enter the vehicle for circulation. If equipped with an air quality sensor, the system will automatically switch to recirculation mode when detecting increased concentrations of harmful substances in the outside air, preventing it from being drawn into the cabin. 3. Once the concentration of harmful substances in the outside air drops to normal levels, the system will automatically deactivate recirculation mode, allowing fresh air to enter the vehicle again.

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What Causes Engine Shaking and Stalling During Cold Start?

There are two main reasons for engine shaking and stalling during cold start. Below are the relevant explanations: 1. Dirty throttle body: This can cause the throttle valve to not close properly or the idle speed control motor to get stuck, both of which can lead to excessively high engine idle speed. Therefore, when the vehicle experiences shaking, the first step is to inspect the throttle body and fuel injectors. If excessive dirt is found on the throttle body or excessive carbon buildup on the fuel injectors, they should be cleaned promptly. 2. Worn engine mounts: Engine mounts serve as the vibration damping system for the engine. If there are issues with the engine mounts, it can cause shaking during idle. The engine load increases when electrical systems are turned on, leading to a drop in idle speed. To compensate for the shaking caused by this drop, the engine automatically raises the RPM slightly. When turning on the vehicle's electrical systems, especially when starting the car air conditioning in summer, the engine often exhibits shaking.

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How to Check if a Vehicle License is Genuine?

How Long Is the Validity Period of a Driving Permit?

Where is the air conditioning filter for Audi A5 located?

What is the working principle of the engine starting system?

Which lights should be turned on for vehicles at night?

Is the Recirculation Light On or Off?

What Causes Engine Shaking and Stalling During Cold Start?

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