What does mph on the Mercedes dashboard mean?

Can I skip a question I don't know in Subject 4 and move to the next one?

For questions you don't know in Subject 4, you can choose to skip to the next question. In fact, the approach for Subject 4 is the same as for Subject 1, just relatively more challenging. The Subject 3 test consists of two parts: besides the road test, it includes the Safety and Civilization Knowledge Test, commonly known as "Subject 4," which assesses "driving ethics." The test paper consists of 50 questions, mainly in the form of case studies, images, animations, etc., with a full score of 100 and a passing score of 90. Below is an introduction to the other test subjects: 1. Subject 1: Also known as the theoretical test or driver's theory test, it is part of the motor vehicle driver's license assessment. The test content includes driving theory basics, road safety laws and regulations, local regulations, and other related knowledge. The test format is computer-based, with 100 questions, and a passing score of 90 or above. 2. Subject 2: Also known as the small road test, it is part of the motor vehicle driver's license assessment and refers to the field driving skills test. For small vehicles C1 and C2, the test items include five mandatory components: reversing into a garage, parallel parking, stopping and starting on a slope, turning at a right angle, and driving through curves (commonly known as S-turns). 3. Subject 3: Includes the road driving skills test and the safety and civilization driving knowledge test, which are part of the motor vehicle driver's license assessment. The content of the road driving skills test varies depending on the type of vehicle being licensed.

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What is the reason for air leakage when releasing the handbrake relay valve?

The pressure at the air outlet end is too low. If there is a sudden damage causing air leakage in the circuit during normal inflation, it means the pressure at the air outlet end is extremely low. When the air compressor is not supplying air, the pressure in the air chamber of the protection valve will also rise until the circuit piston gate is not damaged. Re-inflation can be initiated, but the inflation pressure remains very low, only reaching 0.5-0.55MP. Below is a related introduction to the brake relay valve: Function: The relay valve is part of the automotive air brake system. In the braking system of heavy-duty vehicles, the relay valve serves to shorten the reaction time and pressure build-up time. Differential Relay Valve: It prevents simultaneous operation of the driving and parking systems, overlapping forces in the combined spring brake cylinder and spring brake chamber, thereby avoiding overloading of mechanical transmission components and enabling rapid inflation and deflation of the spring brake cylinder.

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Is it difficult to learn to drive an automatic transmission car?

Automatic transmission is not difficult, while manual transmission is relatively more challenging. The difference between manual and automatic transmissions lies in gear shifting. Manual transmission requires controlling the clutch to shift gears, and uncoordinated hand and foot movements can cause the engine to stall. In automatic transmissions, the clutch is controlled by a computer, so stalling is generally avoided. Typically, an automatic transmission vehicle has five gears: P (Parking), R (Reverse), N (Neutral), D (Drive), and S (Sport). Here are the related details: 1. P (Parking) - Parking gear, starting gear: When the vehicle is parked and not in use, the gear should be in this position. At this time, the wheels are mechanically locked to prevent rolling. The vehicle must be completely stopped before shifting into P gear; otherwise, the mechanical parts of the automatic transmission may be damaged. 2. R (Reverse) - Reverse gear: Used when reversing. Never force the gear into "R" before the vehicle has completely stopped, as this can severely damage the transmission. 3. N (Neutral) - Neutral gear: Used for temporary stops (e.g., at a red light). This gear position indicates neutral. To prevent the vehicle from rolling on a slope, always keep the brake pedal pressed. 4. D (Drive) - Drive gear: This gear is used for normal driving on roads. 5. S (Sport) - Sport mode: When this gear is engaged, the gears can shift freely, but the shift timing is delayed to keep the engine at high revs for a period, increasing the car's power. However, this mode will result in higher fuel consumption.

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How to Replace the Battery in an Emgrand Key?

Emgrand key battery replacement method: 1. There is a mechanical key button on the side. Press the button and pull out the mechanical key; 2. After pulling out the key, you can see the word "open" on the front of the key, along with a small protruding area; 3. Insert a screwdriver into the small gap and rotate it clockwise to pry open the shell; 4. Insert the screwdriver into the bottom of the battery and lift it up to remove the battery, then install the new battery. The Geely Emgrand is one of the brands launched by Geely Auto. The Emgrand EX8 is positioned by Geely as a large luxury SUV, with dimensions of 4840mm in length, 1845mm in width, and 1715mm in height, and a wheelbase of 2800mm. In terms of power, the Emgrand EX8 is equipped with a 2.4L engine, delivering a maximum power of 150 horsepower and a peak torque of 210 Nm. It also features a full-time four-wheel drive system to enhance the vehicle's off-road capability.

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Why is the central control screen not installed in the new car?

Sometimes the dealership installs it when selling the car, so there's no need to worry. Introduction to the automotive central control system: Door lock system: The automotive central control system includes the central door lock system, allowing the driver to control all door switches and window lift systems. The central door lock system primarily features three functions: central control, speed control, and individual control. The driver can control all door locks, and when the vehicle reaches a certain speed, the doors automatically lock. Central console: A fully touch-sensitive central console means the car's central console no longer uses traditional physical button or knob designs. Instead, it employs capacitive touch technology, similar to a smartphone screen, where light touches, presses, or swipes can complete operations.

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What brand of tires does the Nissan X-Trail use?

The X-Trail uses a Dunlop tire model, specifically the Grandtrek series tires. Except for the top trim of the X-Trail, all other models in the lineup are equipped with Dunlop GRANDTREK series tires in the size 225/65R17. The advantages of these tires lie in their quietness and grip performance. As one of the suppliers for Mercedes-Benz and BMW, Dunlop tires are frequently used in many Mercedes-Benz models as well as BMW's X5 and 7 Series. It's worth noting that while Dunlop is technically a Japanese manufacturer, its research, development, and production are based in Europe, making it somewhat of a half-European brand. The Grandtrek series achieves a perfect balance between performance on paved and unpaved roads, delivering stable handling in all road conditions. The combination of a straight central rib tread pattern and full belt layers significantly enhances handling stability at high speeds. The 2-in-1 shoulder tread block and small shoulder groove design improve quietness and ride comfort.

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What does mph on the Mercedes dashboard mean?

Can I skip a question I don't know in Subject 4 and move to the next one?

What is the reason for air leakage when releasing the handbrake relay valve?

Is it difficult to learn to drive an automatic transmission car?

How to Replace the Battery in an Emgrand Key?

Why is the central control screen not installed in the new car?

What brand of tires does the Nissan X-Trail use?

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Why is a 4-wheel alignment necessary?

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