What are the reasons for unstable idle speed in BMW?

What does ETC mean in Chinese?

ETC in Chinese stands for Electronic Toll Collection, which is an automatic toll collection system for highways or bridges. According to the State Council's regulations, starting from 2020, vehicles without ETC will not enjoy toll discounts. In the future, only one manual lane will be retained at highway toll stations, and tolls can only be paid through manual lanes. During free holiday periods, vehicles can still use the highways. For users who have installed ETC, passing through ETC lanes will not incur charges. ETC's charging principle: There will be one or more ETC lanes on the highway. Through microwave dedicated short-range communication between the vehicle's electronic tag installed on the windshield and the microwave antenna in the ETC lane of the toll station, the computer network technology is used to settle with the bank in the background, achieving the purpose of vehicles not needing to stop at toll stations to pay tolls. All of this is based on the principle of passing first and deducting fees later. Benefits of installing ETC: Saves time: Eliminates the hassle of waiting in line; Green and environmentally friendly: Green and low-carbon, vehicles pass through toll stations without stopping, reducing noise and exhaust emissions and minimizing pollution; Saves wear and tear: Reduces costs, decreases the frequency of vehicle starts and brakes, and lowers wear and fuel consumption; Improves efficiency: The efficiency of passing through ETC lanes can theoretically increase by 2-3 times, making traditional ETC more updated, faster, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council clearly stated in the "13th Five-Year Plan for the Development of a Modern Comprehensive Transportation System" that "by 2020, the interoperability of transportation cards in key urban clusters will be basically achieved, and the proportion of vehicles equipped with ETC will be significantly increased." It also explicitly set the goal of "reaching a 50% ETC usage rate for road passenger vehicles by 2020" in the main indicators of the "13th Five-Year" comprehensive transportation development. More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and the ETC usage rate for passenger vehicles, the future will also promote the use of ETC for trucks and explore the deep integration of the ETC system with vehicle-to-vehicle communication, vehicle-road coordination, and other smart transportation development directions, providing comprehensive travel services for vehicle owners. This means more application scenarios will support ETC applications. ETC usage precautions: The ETC transaction sensing area is 8 meters. When encountering a vehicle in front stopping, to prevent the vehicle in front from having a faulty ETC device or no ETC device at all, maintain a distance of more than 10 meters to avoid automatic sensing and paying for the vehicle in front. The recognition speed for passing through ETC lanes is 20 km/h. If the speed is too fast, the vehicle's device information cannot be read, leading to charging failure. Unauthorized removal or movement of the OBU device, detachment or loosening of the ETC electronic tag, etc., will cause the electronic tag to fail. It can be sent to the bank where the ETC card was issued or the highway service office for testing. Non-human-induced loosening or detachment only requires reactivation. When using a debit card bound to ETC, insufficient balance will also cause charging failure. Follow the guidance of on-site staff to use the manual MTC lane and pass by cash or card. Excessive thickness of the car windshield can cause poor sensing. This is especially important for vehicles that have had accidents and had their windshields replaced or for those who have modified their front windshields.

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Why Does a Diesel Engine Emit Black Smoke?

Here are the main reasons why a diesel engine emits black smoke: 1. Poor diesel quality—the diesel used does not meet the required performance standards, leading to incomplete combustion and black smoke; 2. Clogged air intake—insufficient air supply during diesel combustion results in incomplete combustion, causing the diesel engine to emit black smoke; 3. Insufficient compression—failure to achieve the required pressure for combustion worsens combustion conditions, leading to black smoke; 4. Changes in the combustion environment—long-term use of the diesel engine and other factors can alter the shape and volume of the combustion chamber, further degrading the quality of the fuel-air mixture. Poor combustion conditions then result in black smoke.

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What is the normal position for the car oil dipstick?

The oil level is normal when it is between the two standard marks on the dipstick. Relevant information about engine oil is as follows: 1. Engine oil is the lubricant for the engine, which can lubricate the engine, reduce friction, assist in cooling, and minimize buffering. 2. Engine oil consists of base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while the additives improve and compensate for the shortcomings of the base oil. 3. Using engine oil can reduce wear on engine components and extend their service life. 4. The appropriate performance grade (quality grade) of engine oil should be selected based on the severity of the engine's operating conditions, additional devices in the intake and exhaust systems of imported vehicles, and the production year.

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Can a Dash Cam Record Inside the Car?

Dual-lens dash cams can record inside the car, while single-lens dash cams cannot. Dash cams record the driving process, and the recorded videos can provide evidence to traffic police in case of an accident, helping to quickly and accurately handle the situation. They can also prevent fraud incidents, avoiding unnecessary trouble and losses, thereby protecting the driver's interests. Relevant information about dash cams is as follows: 1. A dash cam is an instrument that records images, sounds, and related information during vehicle travel. 2. All dash cams support loop recording, with loop settings typically at 1, 2, 3, 5, or 15 minutes. Generally, 3 or 5 minutes is most suitable; durations that are too long or too short are not advisable.

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Why Does the Car Horn Sound Different in Winter?

The reasons for the change in car horn sound during winter are: 1. The rubber of the horn becomes hardened due to weather conditions; 2. Damage to the horn relay, horn contacts, or the horn's power supply circuit. Precautions for using car horns include: 1. Avoid getting the horn wet when washing the car, and dry it immediately if it gets wet; 2. Avoid pressing the horn for extended periods to prevent premature burn-out of the contacts. The working principle of a car horn is: When the horn button on the steering wheel or elsewhere is pressed, current from the battery flows through the circuit to the electromagnetic coil of the horn relay. The coil attracts the moving contact switch of the relay to close, allowing current to flow to the horn. This current activates the electromagnet inside the horn, causing the diaphragm to vibrate and produce sound.

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How to Solve Intermittent Idle Vibration When the Engine is Warm?

Intermittent idle vibration when the engine is warm can be resolved by: 1. Cleaning carbon deposits from the vehicle's engine; 2. Replacing the engine oil and oil filter. Methods for engine maintenance include: 1. Using qualified engine oil; 2. Using qualified coolant and antifreeze; 3. Regularly cleaning radiator scale; 4. Regularly removing engine carbon deposits; 5. Periodically replacing the three automotive filters; 6. Maintaining reasonable engine RPM. The function of the engine is: to serve as the power-generating device for the automobile, determining its power performance, fuel economy, stability, and environmental friendliness. Depending on the power source, automotive engines can be categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid power systems.

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What are the reasons for unstable idle speed in BMW?

What does ETC mean in Chinese?

Why Does a Diesel Engine Emit Black Smoke?

What is the normal position for the car oil dipstick?

Can a Dash Cam Record Inside the Car?

Why Does the Car Horn Sound Different in Winter?

How to Solve Intermittent Idle Vibration When the Engine is Warm?

How to Turn Off the Wrench Light on a Car?

Can I not replace the driving license if it is full of stamps?

What is the solution for abnormal noise from car rubber bushings?

Are Compact Cars Bigger Than Subcompact Cars?