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Can Water Be Used as a Substitute for Engine Coolant in Motor Vehicles?

1 Answers
HarperLynn
07/25/25 10:07am
Motor vehicle engine coolant cannot be replaced with water. One of the functions of automotive antifreeze is to prevent scale formation. If well water or other hard water is added to the antifreeze, it can easily cause scale buildup in the vehicle's engine, leading to clogged pipes and affecting the normal operation and lifespan of the engine. The water used in antifreeze is soft water, which is mixed according to specific standards. Therefore, it is not recommended to add water to automotive antifreeze on your own. Below is an introduction to coolant: 1. Function: Coolant is an essential part of a car's engine. Its main role is to circulate within the engine cooling system, carrying away excess heat generated during engine operation, allowing the engine to operate at normal working temperatures. 2. Risks: When coolant levels are insufficient, the engine's water temperature can become excessively high, potentially causing damage to engine components and severe harm to the vehicle.
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Which is more fuel-efficient, normal mode or eco mode?

eco mode is relatively more fuel-efficient. The relevant information about normal mode and eco mode is as follows: Concept of normal mode: Normal mode is the standard driving mode, which is the ordinary mode when driving a car. Normal mode is suitable for urban driving. When the car is in normal mode, the car's transmission and throttle will be in a relatively balanced state, making the occupants more comfortable. Concept of eco mode: Eco mode is the economical mode. When the vehicle is in this mode, the throttle response becomes more sluggish, the transmission shifts more proactively, and the engine speed is maintained in a relatively low range, thereby achieving the goal of fuel efficiency. Difference between normal mode and eco mode: There is a difference in energy consumption. Eco mode operates in a low-energy and environmentally friendly state, while normal mode operates in a standard power consumption state, with normal mode consuming more energy than eco mode.
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Does BMW have remote start?

Only some model series have the remote start function. Some model series do not have the remote start function. Model series without remote start: The original BMW vehicles are not equipped with this function, but they are equipped with remote software upgrade functionality, which can be configured through the BMW ConnectedDrive store. Many BMW models can wirelessly install this system, including the 320i, 330i, and M340i models produced since July 2019, the entire 4 Series Coupe lineup produced since July 2020, the 520i and 530i models produced since July 2020, and the 740i, 740Li, and 840i models produced since July 2019. Remote start function: This system allows the owner to start the engine from any location via the BMW ConnectedDrive app, with each start lasting up to 15 minutes, optimizing the cabin conditions before the driver and passengers enter the vehicle.
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Where is the chassis number of the Mercedes-Benz S280?

It is located under the windshield wiper inside the car. The Mercedes-Benz S280 stands out in terms of exterior design and powertrain configuration. Exterior of the Mercedes-Benz S280: The overall body lines have been refined from the slightly bulky appearance of the past to a more balanced and proportionate shape, combined with a windshield and hood featuring a steeper rake angle. These seemingly minor modifications have yielded tangible results, achieving a drag coefficient of just 0.27. The use of lightweight metals has also significantly reduced the vehicle's weight. Interior of the Mercedes-Benz S280: The cabin features light gray leather paired with premium burl wood, creating a strong sense of modernity. Additionally, Mercedes now offers the luxurious Designocouture interior package, which includes top-quality Nappa leather and suede leather trim, charcoal gray poplar or maple wood veneers, and a premium Alcantara fabric headliner.
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Is It Normal for the Malfunction Indicator Light to Illuminate in a New Car?

It is normal for the dashboard indicator lights to illuminate when the ignition switch is turned on. This is the vehicle's system performing a self-diagnosis, and the lights will automatically turn off after a period of time. However, if any of the following malfunction indicator lights remain illuminated, it indicates a fault in the corresponding system. Immediate inspection and repair are recommended to avoid safety hazards. For new cars, warranty claims may apply. Common malfunction indicator lights and their causes are as follows: 1. Engine Malfunction Light: Poor combustion condition, engine knocking, poor fuel quality, excessive engine carbon buildup. 2. Battery Fault Light: Battery depletion or failure, power system malfunction. 3. Oil Warning Light: Insufficient oil level, excessively high engine temperature, inappropriate oil selection, clogged oil passages. 4. Tire Pressure Warning Light: Tire puncture or air leakage, damaged tire pressure sensor. 5. Brake System Fault Light: Parking brake not released, ABS function failure, non-compliant brake fluid, abnormal brake system. 6. Coolant Temperature Warning Light: Excessively high engine coolant temperature, insufficient coolant, thermostat failure, damaged coolant temperature sensor.
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How to Register Vehicle Modifications?

Vehicle owners must complete the Motor Vehicle Modification Registration Application Form and submit a series of documents to the local Vehicle Management Office, including the identity proofs and copies of the owner and the agent, the vehicle registration certificate, and the vehicle license. Below is a detailed introduction to vehicle modifications: 1. Traffic Management Department Approval: If modifications are needed, approval must be obtained from the traffic management department before proceeding to a professional vehicle modification service. Changing the vehicle logo, adding lighting devices, installing xenon lights, etc., which alter the original characteristics of the vehicle, are considered illegal. Modifications can only be carried out after approval from the Vehicle Management Office. Bring your ID card, driver's license, vehicle license, and pictures of the modified vehicle to the Vehicle Management Office to complete the registration process, with a fee of several hundred yuan. 2. Application for Change Registration: The owner must apply for a change registration at the Vehicle Management Office within 10 days after the modification. The Vehicle Management Office must process the relevant procedures on the same day, including annotating the changes in the vehicle registration certificate, retrieving the old vehicle license, and issuing a new one. In other words, vehicle owners must first apply to the Vehicle Management Office if they wish to modify their vehicles.
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Can I directly apply for a B2 driver's license now?

You can directly apply for a B2 driver's license. Below are the specific details about the B2 driver's license: 1. Permitted Vehicle Types: The B2 license allows you to drive medium and heavy-duty trucks or specialized operation vehicles, as well as small cars, small automatic transmission cars, low-speed trucks, three-wheeled cars, and wheeled self-propelled machinery. The B2 license does not permit driving passenger buses or tow trucks. Driving a tow truck requires an A2 license, while driving a passenger bus requires a B1 license. If you want to drive both passenger buses and trucks, you need to apply for a B1 or A2 license. 2. Application Method: The B2 driver's license can be applied for when initially applying for a driver's license, or it can be upgraded from a lower-level license. Regardless of the method, you need to submit an application to the local vehicle management office in your registered residence, then undergo a physical examination as required, and proceed to a driving school for study and testing.
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