What are the differences between imported Mercedes-Benz E-Class and domestically produced Mercedes-Benz E-Class?

What is the normal temperature of a car engine?

The normal operating temperature of a car engine is 2000-2500 degrees Celsius. Due to differences in engine structure and type, there are slight variations. For a typical four-stroke water-cooled naturally aspirated engine, the normal operating temperature is approximately between 80-90 degrees Celsius. For the widely used turbocharged gasoline engines today, due to their higher degree of reinforcement, the normal operating temperature is slightly higher, generally between 95-105 degrees Celsius. For air-cooled engines, the temperature is even higher, generally between 120-150 degrees Celsius, with slight variations depending on the vehicle model. The temperature of the engine oil is slightly higher than the coolant temperature, generally between 100-110 degrees Celsius. To maintain the oil temperature, some high-performance engines are equipped with oil coolers to dissipate heat and prevent excessive oil temperatures. When the engine operates at its normal working temperature, the clearance between components is at its optimal state, and the combustion chamber temperature is around 500-600 degrees Celsius. Under these conditions, fuel combustion is at its best, and the engine's thermal efficiency and overall performance are optimized. If the temperature is too low, it can lead to increased lubricant viscosity, accelerated engine wear. Data shows that 80% of engine wear occurs during cold starts, and fuel combustion is also less efficient, resulting in lower thermal efficiency. If the engine temperature is too high, it can cause a decrease in lubricant viscosity, poor lubrication, and reduced or even eliminated component clearances, ultimately leading to severe mechanical failures such as cylinder scoring or bearing failure.

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Which gear is used for climbing hills?

Climbing hills is done in D gear. The following is an explanation about car gears: 1. Meaning: When the car is moving, shifting gears allows the engine to operate at its optimal performance state. All driving conditions have corresponding shift points, with the ultimate goal of reducing fuel consumption. 2. Method: After starting the engine, wait a few seconds before moving the gear to the correct position, such as shifting to D gear for forward movement and R gear for reversing. Next, release the handbrake first, then smoothly release the foot brake. 3. Principle: Utilize the creep phenomenon (referring to the phenomenon where a car with an automatic transmission, when the gear selector is in D or R gear and the engine is idling, if the brake pedal is released, the vehicle tends to move or has a slight creeping sensation, which is a unique phenomenon of automatic transmission cars) to allow the vehicle to start slowly.

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What are the reasons why the car trunk cannot be closed?

The reasons why the car trunk cannot be closed: It may be due to a damaged trunk lock, and you can replace it with a new one at a 4S shop. Here is some information about the trunk: 1. Trunk structure: The trunk structure is very simple, consisting of a motor and a gear reduction mechanism that drives a lever to operate the trunk locking mechanism. Its working principle is the same as that of the central door lock. 2. Triangle warning sign: The triangle warning sign must be carried in the trunk of all vehicles. It is used during vehicle inspections, especially when the vehicle breaks down. It needs to be set up about 150 meters behind the vehicle to warn approaching vehicles. If it is not set up, you may be fined by the traffic police. Therefore, it is important to keep the triangle warning sign properly stored and not to take it out of the car casually.

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Why did BMW ConnectedDrive suddenly stop working?

You need to check whether your BMW ConnectedDrive service has expired. If you wish to continue using the service, you will need to renew your subscription. If necessary, you can call BMW China Customer Service for professional official assistance. BMW 5 Series 2022 specifications: Length*Width*Height is 5106*1868*1500 (mm), equipped with a 2.0T engine, maximum torque of 290 (N·m), and maximum power of 135 (kW). Functions of BMW ConnectedDrive: It allows you to conveniently send addresses from Baidu Maps and Amap to your car, and also supports sending directly from Apple Maps to BMW ConnectedDrive. Meeting schedules (including desired arrival times) from the driver's phone calendar are automatically imported into BMW ConnectedDrive. BMW ConnectedDrive calculates the appropriate departure time based on current traffic conditions. With just one click, you can send the selected destination to the vehicle's integrated navigation system. Maps can be sent directly to BMW ConnectedDrive. BMW ConnectedDrive will remind the driver of the departure time via iPhone or Apple Watch to ensure timely arrival at the next destination. The system calculates the appropriate departure time based on the current vehicle location and real-time traffic information.

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Should You Shift to Neutral When Waiting at a Red Light?

For automatic transmission vehicles, whether to shift to neutral during brief stops at red lights or when parking depends on the duration of the stop. For short stops, it's not necessary to shift to neutral. However, for prolonged stops, shifting to neutral is advisable. For waits exceeding 30 seconds, it's recommended to shift to neutral and engage the handbrake. Below is additional information on other gear positions: 1. P (Park) Gear: The P gear is for parking and can be engaged directly without pressing the brake or pulling the handbrake. However, since engaging P gear requires passing through R (Reverse) gear, it can cause some impact on the transmission, although this impact is generally minor. Additionally, in the event of a rear-end collision while waiting at a red light, having the car in P gear could damage the transmission. Therefore, using P gear in such situations is not recommended. 2. D (Drive) Gear: If the stop is very brief, staying in D gear is acceptable. However, for longer stops, it's best to avoid keeping the car in D gear. When the gear selector is in the drive position, automatic transmission vehicles tend to have a slight creeping motion. Continuously holding the brake to counteract this motion can cause the transmission fluid temperature to rise, leading to fluid degradation. This is particularly detrimental when the air conditioning is on and the engine is idling at a higher speed. 3. N (Neutral) Gear: When the gear selector is in N gear, the power connection between the engine and the transmission is disconnected. This is suitable for brief stops, such as waiting at a red light. To prevent the vehicle from rolling on an incline, it's advisable to press the brake or engage the handbrake.

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Which lights should be turned on when driving on the highway at night?

When driving on the highway at night, you should turn on the high beam, low beam, turn signal, and width indicator lights. Precautions for night driving: 1. During normal driving: Turn on the night light and width indicator light during normal driving. If there is no vehicle ahead, you can appropriately turn on the high beam to briefly observe the road surface and surrounding conditions at a farther distance ahead, then quickly switch to the low beam. 2. When meeting another vehicle: Use a combination of high beam and low beam when meeting another vehicle. If there is a vehicle ahead or an oncoming vehicle, remember to switch the high beam to the low beam. 3. When overtaking: When overtaking, you should switch the high beam to the low beam in advance and turn on the turn signal to let the vehicle in front know your position and intention.

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What are the differences between imported Mercedes-Benz E-Class and domestically produced Mercedes-Benz E-Class?

What is the normal temperature of a car engine?

Which gear is used for climbing hills?

What are the reasons why the car trunk cannot be closed?

Why did BMW ConnectedDrive suddenly stop working?

Should You Shift to Neutral When Waiting at a Red Light?

Which lights should be turned on when driving on the highway at night?

What does the Panamera Sport Turismo mean?

What is the Difference Between Thermal Imaging and Night Vision Devices?

What Causes Abnormal Noise and Failure to Start When Igniting?

What is the Chinese name for the Kia Telluride?