What are the main components of the fuel supply system?

Which button is for the external air circulation in Mercedes-Benz?

External air circulation is located on the air conditioning panel of the center console. The switch between internal and external air circulation is controlled by the computer. To force internal or external air circulation, simply press the internal circulation button. When the indicator light is on, it means internal circulation; when the light is off, it means external circulation. Below is an introduction to the selection of internal and external circulation: 1. Outdoor exposure: After getting in the car, first turn on external circulation to ventilate and dissipate heat. You can also open the windows and sunroof to speed up heat dissipation. Once the interior temperature has stabilized, close the windows, turn on the cooling, and switch the air conditioning to internal circulation. 2. Cold weather: Wait a moment after getting in the car until the engine temperature reaches the normal level. Then, turning on the heater with internal circulation can quickly raise the temperature. 3. Traffic jam: It is best to turn off external circulation to block exhaust fumes from the vehicle in front. 4. Highway driving: You can turn on external circulation as needed because driving at high speeds for a long time with internal circulation can lead to poor air quality inside the car. Turning on external circulation helps maintain the interior temperature and refreshes the air. 5. Parking: If you need to rest in the car with the air conditioning on, be sure to turn on external circulation periodically or leave a small gap in the window.

10

3

Share

What is the fuel consumption of the Mazda CX5?

The fuel consumption of the Mazda CX5 2.0I model is 8.0 liters per 100 kilometers, while the 2.5I model consumes 10.5 liters per 100 kilometers. Below is relevant information about the Mazda CX5: 1. Body dimensions: The car measures 4555 mm in length, 1842 mm in width, 1685 mm in height, with a wheelbase of 2700 mm. 2. Powertrain: (1) 2.0L naturally aspirated engine: Delivers 155 horsepower and a maximum torque of 200 Nm, with the maximum power achieved at 6000 rpm and the maximum torque at 4000 rpm. (2) 2.5L naturally aspirated engine: Produces 196 horsepower and a maximum torque of 252 Nm, with the maximum power achieved at 6100 rpm and the maximum torque at 4000 rpm. 3. Suspension: The Mazda CX5 features a MacPherson independent front suspension and a multi-link independent rear suspension. 4. Models: The Mazda CX5 is available in both front-wheel-drive and all-wheel-drive versions, with the all-wheel-drive model equipped with an on-demand four-wheel-drive system.

17

4

Share

What Causes a Thud Sound During Emergency Braking in Cars?

Abnormal noises when braking could be due to metal hard spots on the brake pads, severe wear of the brake disc, or small stones or a water film between the brake disc and brake pads. Below is relevant information on checking for abnormal braking noises: 1. Metal hard spots on brake pads: If there are tiny metal particles on the brake pads, they can produce a screeching sound when braking. Trying to brake hard several times or grinding and replacing the brake pads can resolve this issue. 2. Severe wear of the brake disc: Prolonged use of car brake discs can lead to deep grooves at the friction points with the brake pads, causing abnormal noises when braking. If the grooves are not deep, grinding the edges of the brake pads may help; if they are deep, replacing the brake disc is necessary. 3. Small stones or a water film between the brake disc and brake pads: If you've driven on gravel roads, in sandy weather, or just washed the car, check to remove any small stones or press the brake several times to wear off the water film.

14

5

Share

What Causes the Rear Wheel of an Electric Vehicle to Make Strange Noises and Shake?

Electric vehicle rear wheels making strange noises and shaking are generally caused by demagnetization of the electric motor. The most direct factors leading to motor demagnetization are high temperatures and water ingress causing rust. Below are solutions for high temperatures and water ingress causing rust: 1. High temperatures: (1) When parking the electric vehicle, it is best to park it under a shade to prevent prolonged direct sunlight exposure to the motor; (2) Avoid overloading the vehicle to prevent rapid battery consumption and excessive heat generation. 2. Water ingress causing rust: (1) Avoid driving the electric vehicle through water to prevent direct water ingress and rusting of the motor; (2) After riding in the rain, promptly wipe the motor to prevent residual moisture from entering; (3) Do not store the electric vehicle in a humid environment to prevent moisture from entering the motor.

7

1

Share

What else should be done before starting a large vehicle besides observing the rearview mirrors?

Before starting a large vehicle, besides observing the rearview mirrors, the front lower mirrors should also be checked. Below are precautions for vehicle starting: 1. Listen to the throttle sound: When starting the vehicle, there are three types of sounds during clutch release: "high-pitched," "steady," and "low-pitched." The "high-pitched" sound indicates the free travel distance of the clutch; during "steady" and "low-pitched" sounds, the clutch release speed must be slowed down. 2. Handbrake timing: On flat roads or downhill starts, the handbrake can be released before pressing the throttle and releasing the clutch; uphill starts require waiting until the throttle sound becomes "steady" before releasing the handbrake to prevent the vehicle from rolling backward. 3. Throttle pressure: On flat roads or downhill starts, a slight press on the throttle is sufficient; uphill starts require adjusting the throttle pressure based on the slope's steepness—the steeper the slope, the greater the throttle pressure needed. 4. Clutch: At the moment of releasing the handbrake, momentarily stabilize the clutch and add more throttle to ensure a smooth start. 5. Ignition: For downhill starts, if the vehicle has stalled and the slope is steep, it is possible to directly engage third gear without ignition, release the brake, and start. The vehicle can automatically ignite as the wheel speed increases.

19

3

Share

What Causes a Truck to Shake at 70 km/h?

Truck shaking at 70 km/h can be caused by various factors, such as misaligned front wheel positioning angles or excessive toe-in. During vehicle operation, improper front tire pressure (either too high or too low) or tire imbalance due to repairs can also lead to shaking. Additionally, high speeds may induce vibrations. During maintenance, loose installation of drivetrain components can similarly cause shaking. Truck Driving Tips: 1. Starting: When starting a large truck, ensure proper coordination of the clutch, throttle, and handbrake. Pay special attention to the timing when releasing the handbrake. For uphill starts, hold the clutch engagement point slightly longer and apply slightly more throttle. Since trucks have ample power in first gear, this helps prevent stalling. 2. Shifting: Master the timing of gear shifts to avoid lugging the engine, especially when climbing hills where early downshifting is necessary to maintain sufficient power. Use double-clutching for gear changes and add throttle when downshifting. On descents, engage lower gears and never coast in neutral. 3. Turning: When turning, choose an appropriate angle and account for the inner wheel difference (take wide turns). On consecutive curves where possible, aim for the outside of the turn to reduce centrifugal force. Avoid pumping the brakes during braking maneuvers; monitor air pressure to prevent loss of braking control. 4. Gear Changes: Practice smooth gear transitions. Once the vehicle is on open roads, promptly accelerate to reach a speed slightly higher than the current gear's low range before upshifting. When applying throttle after clutch release, the engine and vehicle should not shake if the timing is correct.

9

3

Share

What are the main components of the fuel supply system?

Which button is for the external air circulation in Mercedes-Benz?

What is the fuel consumption of the Mazda CX5?

What Causes a Thud Sound During Emergency Braking in Cars?

What Causes the Rear Wheel of an Electric Vehicle to Make Strange Noises and Shake?

What else should be done before starting a large vehicle besides observing the rearview mirrors?

What Causes a Truck to Shake at 70 km/h?

Is SAIC a Joint Venture or Domestic Brand?

What is the fuel consumption of the BYD Han Hybrid?

Can medical alcohol be stored in a car?

Should You Use P Gear or N Gear for Warming Up the Car?