What does the exclamation mark on the BMW dashboard mean?

How Much Should You Press the Throttle When Starting?

Generally speaking, when starting, you can let the engine speed reach 2000-2200 rpm, then release the throttle slightly before pressing it again. This allows the computer to complete the gear-shifting action. When starting an automatic transmission car, do not press the throttle pedal too hard, as this will only increase the engine speed, causing loud engine noise and transmission wear, leading to fuel waste. Here are more details: 1. Don't press the throttle too quickly while driving: Once the car is on the road, the amount of throttle applied should be controlled according to your actual situation. In the appropriate gear, the engine can perform at its best. Generally, operating between 2000 to 3000 rpm with a larger throttle opening can help save fuel. 2. Don't press the throttle randomly when starting: When the engine has just started, some people habitually press the throttle all the way down, as it is convenient and requires less effort. However, compared to slightly above idle speed, the throttle is harder to control, and the foot can get tired easily. When starting, it's best to press the throttle moderately.

6

5

Share

What Causes a Cadillac to Not Start and Keep Making a Clicking Sound?

The clicking sound when the car fails to start may be due to insufficient voltage in the car battery. When the battery does not provide enough power, it cannot drive the engine to reach the starting speed. The clicking sound during startup is caused by the repeated engagement and disengagement between the magnetic solenoid and the relay. Below are the possible reasons and solutions: 1. Battery Aging: Insufficient voltage may be caused by an old battery. Over time, the battery's capacity to store charge decreases. Additionally, some car owners listen to music or turn on the air conditioning while the engine is off, which significantly drains the battery, making it more prone to losing power. 2. Engine: Excessive carbon buildup in the intake pipe, throttle valve, or idle control valve can prevent the engine from achieving the required air-fuel mixture ratio, leading to the car's failure to start and the clicking sound from the magnetic solenoid and relay. Similarly, insufficient fuel supply from the fuel system has the same effect as excessive carbon buildup in the intake pipe, preventing the engine from achieving the necessary air-fuel mixture ratio. 3. Magnetic Solenoid: A fault in the starter motor, particularly the magnetic solenoid's inability to maintain engagement, can prevent it from providing the necessary starting torque, resulting in the engine's failure to start accompanied by a clicking sound. Ignition system faults directly prevent the engine from starting. If the ignition key remains in the start position, it can cause the starter relay to repeatedly engage, producing a clicking noise. 4. Starter Brush Damage: If the starter brushes are damaged and cannot provide sufficient voltage (rated voltage), the starter will have difficulty starting. Issues such as the starter flywheel not moving can prevent the starter from connecting with the engine. To check for fuel system faults, disconnect the fuel line from the engine, turn the ignition switch to the on position (without starting the engine), and observe if fuel flows out. If fuel flows, the issue lies in the fuel system; if not, further inspection of other components is needed. The exact cause of the problem can only be determined by a thorough inspection at a 4S shop or a professional repair shop.

13

1

Share

What is a car trade-in?

Trade-in subsidy is commonly known as trading in the old for the new. A car trade-in generally refers to trading in an old vehicle to purchase a new one, where consumers use the assessed value of their used car plus additional payment to buy a new car. Most car owners opt for the trade-in services offered by 4S dealerships, exchanging their old car at a discounted price for a new one. Another portion of car owners choose to sell their old cars in the used car market and then use the proceeds to purchase a new car. Whether selling the old car directly or trading it in at a 4S dealership for a new car, transfer procedures must be completed, requiring the following materials: 1. The owner's valid ID (for company vehicles, a legal entity code certificate should also be provided). If authorizing someone else to handle the trade-in, the original owner's ID and a legally valid power of attorney are required. 2. Vehicle registration certificate, vehicle license, vehicle insurance policy, original purchase invoice or previous transfer invoice, and proof of additional tax payment.

20

4

Share

Can You Drive in Level 5 Wind?

Level 5 wind causes small trees to sway, while level 6 wind makes power lines hum and makes walking with an umbrella difficult. Driving is possible in winds of level 5 to 6. Below are some driving precautions: 1. Slow down and check carefully when turning: Develop the habit of slowing down significantly when turning (especially at intersections with non-motorized lanes or sidewalks). Observe the conditions in non-motorized lanes and sidewalks, and proceed slowly. This applies both in urban and rural areas. Actively yield to electric bikes in non-motorized lanes and pedestrians on sidewalks. When making a right turn in the city, give way to pedestrians and electric bikes on crosswalks, and only proceed slowly after confirming there is no risk of an accident. 2. Slow down and look left and right at intersections: Develop the habit of slowing down and looking both ways when approaching an intersection, regardless of whether there is a traffic light or if your lane has a green light. Check for vehicles crossing the intersection and only accelerate after confirming there are no speeding cars (also watch out for electric bikes, as their small size makes them easy to overlook).

5

Share

Which button turns on the external air circulation in the Audi Q3?

Audi Q3's internal and external air circulation selection button is located at the lower end of the center console. Situations and scenarios for using external air circulation: 1. After purchasing a new car: You should open the external air circulation as much as possible to maintain air flow between the inside and outside of the car, allowing harmful gases inside the car to evaporate and be released as soon as possible. 2. When smoking: Turn on the external air circulation when smoking in the car to ensure that the smoke is quickly expelled outside. 3. During long highway drives: If you keep the internal air circulation on for a long time, it can easily lead to driver fatigue and cause traffic accidents. Therefore, it is necessary to turn on the external air circulation to replenish fresh air inside the car.

3

1

Share

What are the consequences of using cleaning oil to clean the engine?

Using cleaning oil to clean the engine may cause engine pre-ignition or engine seizure. If the engine seizes, it may become irreparable. Currently, most engine cleaning oils on the market primarily consist of low-cost mineral oil and detergent dispersants, with a relatively high proportion of detergent dispersants. After cleaning the engine, residual detergent dispersants may remain inside, which can affect the performance of the new oil, especially in direct-injection engines, where the impact can be fatal. Introduction to the hazards of sludge in the engine: 1. Sludge inside the engine can affect heat dissipation, leading to higher oil temperatures and a decrease in the engine's power output. 2. Sludge inside the engine increases the resistance to oil flow, reducing oil circulation and affecting lubrication. 3. Blocking the engine's oil passages: When there is excessive sludge inside the engine, it can block the oil passages, leading to insufficient lubrication between engine components, increased friction, and in severe cases, bearing seizure or crankshaft seizure. 4. Sludge is insoluble in oil: During oil changes, the sludge cannot be drained, directly affecting the quality of the new oil.

1

Share

What does the exclamation mark on the BMW dashboard mean?

How Much Should You Press the Throttle When Starting?

What Causes a Cadillac to Not Start and Keep Making a Clicking Sound?

What is a car trade-in?

Can You Drive in Level 5 Wind?

Which button turns on the external air circulation in the Audi Q3?

What are the consequences of using cleaning oil to clean the engine?

What is Car Displacement?

What is a car radiator?

Is the turn signal up, right, down, left?

What causes the engine warning light to come on in an Audi A3?