What are the reasons for BMW's jerking and surging at low speeds?

What Causes the Oil Light to Stay On and the Engine to Fail to Start?

The reasons for the oil light staying on and the engine failing to start are as follows: 1. Faulty false alarm: The so-called faulty false alarm mainly refers to the failure of the oil pressure sensor—the oil pressure switch. This means the sensor itself, which is originally used to detect the engine oil pressure, malfunctions. 2. Engine sludge: Engine sludge is sometimes related to the oil light staying on. It is quite easy to understand—large chunks of sludge formed in the engine can easily clog the oil pump filter screen (oil pickup) in the oil pan, leading to low oil pressure. Additionally, engine sludge can cause the oil to deteriorate or change in viscosity. If the oil viscosity becomes too high, it may also trigger the oil light alarm.

16

3

Share

Can I drive away immediately after replacing the front windshield?

You cannot drive away immediately after replacing the front windshield. Generally, you need to wait for 12 hours. The windshield is adhered to the car body with glass adhesive, which requires a considerable amount of time to cure. Therefore, after replacing the windshield, you must wait until the adhesive is completely dry before moving the car to prevent issues such as glass misalignment, adhesive failure, or water leakage caused by insufficient curing. Precautions after windshield replacement: 1. Do not wash the car for three days: Avoid washing the car within three days after replacing the windshield, and remove the tape securing the windshield position after three days. 2. Try to avoid driving on excessively bumpy roads: Avoid sudden braking and rapid acceleration to prevent the windshield from shifting. 3. Do not drive on highways: Keep the maximum speed below 80 kilometers per hour. 4. Do not open windows for three days after replacement: Avoid opening windows while driving within three days after replacing the rear windshield to prevent the rear windshield from shifting due to wind pressure.

3

Share

Where to Use the Handbrake in Subject Two?

Fixed-point parking and slope starting (handbrake required when parking, shift to neutral), parallel parking also requires the handbrake (apply handbrake, shift to neutral). Below is a brief introduction to Subject Two: 1. Test items: For small vehicles C1 and C2, the test includes five mandatory items: reversing into a garage, parallel parking, fixed-point parking and starting on a slope, right-angle turns, and curve driving. Subject Two, also known as the small road test, is part of the motor vehicle driver's license assessment, referred to as the field driving skill test. 2. Test content: For large vehicles A1, A2, A3, B1, and B2, the test includes pile test, fixed-point parking and starting on a slope, parallel parking, crossing a single-plank bridge, curve driving, right-angle turns, passing through a width-limited gate, passing continuous obstacles, driving on undulating roads, U-turns on narrow roads, as well as simulated highway driving, continuous sharp turns on mountain roads, tunnels, rainy and foggy weather, slippery roads, and emergency handling.

11

3

Share

What to Do If Your Driver's License Renewal Has Expired?

Generally, you need to go to the vehicle management office to resolve this issue, mainly depending on how long it has been expired. Different expiration periods require different handling methods. The renewal regulations are as follows: 1. First, the renewal should be processed within 90 days before expiration, and it can also be normally processed within one year after expiration; 2. Secondly, if it has been expired for more than one year but less than three years, you can only renew the license after passing the subject one exam; 3. If it has been expired for more than three years, the driver's license will be invalidated. During the overdue period, you cannot drive, and you need to retake the driving school exam to drive again. The following procedures are required: 1. To renew an expired driver's license, you need to submit the following materials: the driver's license, ID card, recent medical examination form (specific for driver's license), and two one-inch white background photos; 2. The medical examination form can be completed at hospitals above the county level, and usually, there are also supporting medical examination centers at the vehicle management office; 3. Some places have already opened cross-regional renewal services. For details, please consult the local traffic police team staff.

12

4

Share

Does the Internal and External Air Circulation Affect Fuel Consumption?

Internal and external air circulation is just one factor affecting fuel consumption, with the type of air conditioning compressor playing a more significant role. Here is the relevant information: 1. Internal Circulation: The internal circulation in a car refers to the process where the air inside the vehicle is heated or cooled before being recirculated back into the cabin. 2. External Circulation: This involves using a fan to draw outside air into the cabin, meaning there is a flow of air between the outside and inside of the vehicle. The air blown by the fan comes from outside, and even if the fan is off, air is still drawn into the cabin while driving to replenish fresh air. 3. Functions of Internal and External Circulation: Internal circulation allows the air inside the vehicle to circulate in a closed loop; the air inside is heated or cooled before being recirculated back into the cabin.

5

4

Share

Must I Wear Glasses in My Driver's License Photo If I'm Nearsighted?

When applying for a driver's license, if you are nearsighted, you can choose to wear glasses or not in the provided photo. However, you must submit relevant medical proof confirming that your vision falls within the permissible range for obtaining a driver's license. Below is additional information: Physical requirements for applying for a motor vehicle driver's license: 1. For large passenger vehicles, large trucks, or trolleybuses, the applicant's height must be at least 155 cm; for other vehicle types, the height must be at least 150 cm; 2. Visual acuity must not be lower than 0.7 on the standard vision chart or 4.9 on the logarithmic vision chart (corrective lenses allowed); 3. No red-green color blindness; 4. Ability to distinguish the direction of sound sources with each ear at a distance of 50 cm from a tuning fork; 5. Normal motor function in limbs, torso, and neck.

6

4

Share

What are the reasons for BMW's jerking and surging at low speeds?

What Causes the Oil Light to Stay On and the Engine to Fail to Start?

Can I drive away immediately after replacing the front windshield?

Where to Use the Handbrake in Subject Two?

What to Do If Your Driver's License Renewal Has Expired?

Does the Internal and External Air Circulation Affect Fuel Consumption?

Must I Wear Glasses in My Driver's License Photo If I'm Nearsighted?

What are the precautions for novices driving long distances on highways?

What are the precautions when buying a car from a used car dealership?

What is the normal data flow for a mass air flow sensor?

How to set up the 360-degree panoramic view in the Avalon?