What Causes the BMW 3 Series to Vibrate at Speeds Above 120 km/h?

What to Do When 12 Points Are Deducted in a Year?

The driver must attend a seven-day study session on road traffic safety laws, regulations, and related knowledge at the issuing location of the motor vehicle driver's license within 15 days. The vehicle management office should conduct a road traffic safety law, regulation, and related knowledge examination for the motor vehicle driver within 20 days after they complete the study session. The demerit points will be cleared, and the motor vehicle driver's license will be returned. If the driver continues to participate in study and examinations, but refuses to attend the study session, the traffic management department of the public security authority will announce the suspension of their motor vehicle driver's license.

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Does the Engine Need Carbon Deposit Removal?

Engine carbon deposit removal is necessary, and the methods are as follows: 1. Remove the engine cover, detach the throttle body, and clean it with carburetor cleaner, then dry it with a cloth before reinstalling; 2. Open the oil cap, pour in the entire can of cleaner, close the oil cap, start the engine and let it idle for 10 minutes before turning it off; 3. Add the entire bottle of fuel additive to the fuel tank before refueling; 4. Pour the intake system cleaner into the reservoir of a dedicated cleaning device, connect it to the intake system, and start the engine to allow the vacuum to draw the cleaner into the intake pipes for cleaning purposes. Carbon deposits refer to sludge-like substances formed when fuel and oil vapors that enter the combustion chamber do not burn completely. These deposits accumulate on components such as intake and exhaust valves, spark plugs, fuel injectors, and piston tops, and under the repeated high temperatures of the engine, they eventually form carbon-like deposits.

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Should the AC be turned on in a car during winter?

In winter, there is no need to turn on the AC in a car, as it is the switch for the air conditioning compressor. In summer, using the air conditioning requires pressing the AC button to activate the cold air. However, the warm air utilizes the car's internal heat circulation and does not require the air conditioning compressor to be turned on. To use the warm air, simply adjust the air conditioning buttons. When the car starts, the engine begins to warm up. Wait until the engine temperature gauge needle points to the middle position, then turn on the warm air conditioning and set the air circulation to external circulation to expel the cold air inside the car. After 2 to 3 minutes, switch the air circulation to internal circulation. When there is a significant temperature difference between the inside and outside of the car, the front windshield is prone to fogging. Simply adjust the warm air outlet direction to the position that blows air onto the front windshield.

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What is the method for changing a spare tire?

The method for changing a spare tire is: 1. Loosen the screws with a wrench; 2. Lift the car with a jack, but not too high—just enough to remove the tire; 3. Remove the old tire; 4. Install the spare tire, align it with the screw holes, secure it, and ensure the screws are tightened; 5. Remove the jack. The methods for tire maintenance are: 1. Regularly clean out small stones stuck in the tire treads; 2. Avoid prolonged exposure of the tires to direct sunlight; 3. Frequently check the tire pressure. You can refer to the normal tire pressure values listed on the inside of the fuel tank cap and adjust accordingly; 4. Pay attention to suspension maintenance.

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How to adjust the time on a Volkswagen Polo?

The method to adjust the time on a Volkswagen Polo is: 1. Locate the small knob on the dashboard for time adjustment; 2. Turn this knob to the left to adjust the hour; 3. Turn it to the right to adjust the minutes. The Volkswagen Polo's body dimensions are: length 4053mm, width 1740mm, height 1449mm, wheelbase 2556mm, minimum ground clearance 130mm, and body weight 1145kg. The Volkswagen Polo is equipped with a 1.5T inline 4-cylinder turbocharged engine, producing a maximum horsepower of 113PS, maximum torque of 145Nm, maximum power of 83kW, maximum power speed of 6000rpm, and maximum torque speed of 3900rpm. It is paired with a 5-speed manual transmission.

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How to Check for Electrical Leakage in a Sedan?

The methods to check for electrical leakage in a sedan are: 1. Observe the color of the inspection hole on the battery and check whether the battery's appearance is intact and if there is any leakage; 2. Use a multimeter to measure the battery voltage and charging output to ensure they are normal, with a normal voltage above 12 volts, and not dropping below 10 volts after continuous discharge for 10 seconds; 3. Remove the negative terminal of the battery, set the multimeter to the current measurement mode, connect the red probe to the battery's negative terminal wire, the black probe to the negative terminal post, observe the ammeter reading, and compare the measured current value with maintenance data to see if it is within the normal range; 4. Turn off all electrical devices in the car, ensure the doors and trunk are locked, disconnect the negative terminal of the battery, and after 20 minutes, connect one end of a test light to the battery's negative wire and the other end to the battery's negative post. If the light turns on, it indicates that electrical devices and wiring are still leaking electricity, and you should check the relays and fuses.

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What Causes the BMW 3 Series to Vibrate at Speeds Above 120 km/h?

What to Do When 12 Points Are Deducted in a Year?

Does the Engine Need Carbon Deposit Removal?

Should the AC be turned on in a car during winter?

What is the method for changing a spare tire?

How to adjust the time on a Volkswagen Polo?

How to Check for Electrical Leakage in a Sedan?

How to Engage First Gear and Reverse Gear?

How to Release the Steering Wheel Lock with One-Key Start?

What are the techniques for a smooth shift from first to second gear?

What to Do When the Battery Symbol Appears on the Dashboard?