What does the number 35 at the back of the Audi A6L represent?

What noise does a broken bearing make?

A humming sound. Below are specific explanations about damage to the rear wheel bearing of a car: 1. Method to determine if it's damaged: After accelerating the car, let it coast in neutral. If the humming sound remains unchanged, it indicates a damaged rear wheel bearing. 2. Causes of rear wheel bearing damage: Broken or rusted components, entry of foreign objects, or tilting of the roller can cause damage. Prolonged exposure to acidic liquids and moisture can also lead to rusting of components; poor lubrication, if there's insufficient grease between the roller and raceway, dry friction may occur, producing abnormal metallic friction noises; clearance issues, there should be appropriate gaps between car parts, and when the distance between the roller and raceway decreases, it can easily cause friction heat, leading to bearing sintering.

8

4

Share

What Are the Effects of a Damaged Oxygen Sensor on a Car?

Excessive emissions, deterioration of engine performance, stalling at idle, inaccurate engine operation, and reduced power are all symptoms of a faulty oxygen sensor. The role of the oxygen sensor is to control vehicle exhaust emissions, reduce environmental pollution caused by the vehicle, and improve the fuel combustion quality of the car's engine. The method for inspecting an oxygen sensor is: By observing the amplitude and frequency of the oxygen sensor's voltage changes, one can determine whether the oxygen sensor is functioning properly. To check if the oxygen sensor is working correctly, a diagnostic scanner can be used. After starting the engine and allowing it to reach normal operating temperature, the oxygen sensor's voltage should fluctuate rapidly within a range of 0.1V to 0.9V, indicating that the oxygen sensor is functioning properly. This voltage is the feedback voltage of the oxygen sensor. Common faults of the oxygen sensor include: oxygen sensor poisoning, carbon buildup, ceramic cracking in the oxygen sensor, heater resistor wire burnout, and internal wiring disconnection. Cars have both a front and a rear oxygen sensor: The front oxygen sensor's role is feedback, detecting the oxygen content in the exhaust gases produced after the combustion of the air-fuel mixture in the cylinders. A high oxygen content indicates a lean mixture, while a low oxygen content indicates a rich mixture. The rear oxygen sensor's role is to check the purification effectiveness of the catalytic converter, detecting the oxygen content in the exhaust gases after purification. Every car is equipped with an oxygen sensor, and typically, a car has two oxygen sensors—one located behind the exhaust manifold and another behind the catalytic converter. The oxygen sensor can detect the oxygen content in the exhaust, allowing the ECU to adjust the air-fuel ratio and also determine whether the catalytic converter is functioning properly.

3

Share

What are the restrictions on pickup trucks on the road?

Pickup trucks generally do not face many restrictions on the road, but in some cities, certain areas prohibit their operation. For example, in Beijing, pickup trucks are not allowed to drive within the Fifth Ring Road. However, in most cities, there are no restrictions on pickup trucks. Below is an introduction to the advantages of pickup trucks: Pickup trucks are classified as light-duty trucks. Their cabins are similar to those of sedans, but they feature an open cargo bed at the rear. Pickup trucks typically use a body-on-frame design, offering good ride comfort, the ability to carry cargo, and passenger seating. With high ground clearance, pickup trucks have strong off-road capability.

3

1

Share

What to Do When the Windshield Wiper Doesn't Move?

The windshield wiper may not move due to the following reasons: 1. Check the wiper: Lift the wiper and remove it in the opposite direction to inspect the wiper itself. If it is damaged, it can be directly replaced. 2. Clean the wiper: Water sandpaper is mainly used for grinding and polishing car, furniture, and other parts, with no dust pollution during operation. Soak both the water sandpaper and the wiper in water for about 5 minutes, then gently grind the rubber strip of the wiper with the water sandpaper to remove dust particles. After cleaning, the issue of the wiper not moving can be resolved.

19

1

Share

Can Motorcycles Go on the Highway During the Probationary Period?

Motorcycle drivers cannot go on the highway during the probationary period. Those who violate this rule will be given a warning or fined. According to the relevant provisions of the Road Traffic Safety Law, motorcycles are also classified as motor vehicles and can only be driven on highways after meeting certain conditions, which means they must complete a one-year probationary period before being allowed on highways. The Traffic Safety Law stipulates: Motorcycles with a maximum speed exceeding 70 km/h can go on highways. Currently, most motorcycles meet this requirement. However, some regions prohibit motorcycles from entering highways. Before entering, riders must check for any signs at toll station entrances that forbid motorcycle passage. Violators will face both point deductions and fines. To ride a motorcycle on the highway, the following five conditions must be met: Confirm local regulations: Although Chinese regulations allow motorcycles on highways, not all cities permit them. Riders must adhere to local rules. Must have a driver's license: Only licensed motorcycle owners are allowed on the road. A license proves the rider's competence. Unlicensed highway riding will result in a 12-point deduction and a fine if caught by traffic police. Wear a helmet and protective gear: Failure to wear a helmet on the highway will lead to severe penalties from traffic police. No passengers allowed: Under the new regulations, carrying passengers, including children, is prohibited on highways, and violators will face heavy fines. Speed must be between 70 and 80 km/h: Motorcycles have lower speed limits, and exceeding 80 km/h will trigger speed cameras.

4

2

Share

What are the requirements for the one-inch photo for driver's license renewal?

Driver's license one-inch photo requirements are as follows: Three recent one-inch bareheaded white background color photos are required. The materials required for driver's license renewal are as follows: 1. "Motor Vehicle Driver's License Application Form". 2. "Motor Vehicle Driver Physical Condition Certificate" issued by a medical institution at or above the county level or the regimental level of the military. For applicants applying for a special small automatic passenger car for the disabled, they must submit the "Motor Vehicle Driver Physical Condition Certificate" issued by a specialized medical institution designated by the provincial health authority. 3. The original and a copy of the applicant's valid identity document. 4. The original motor vehicle driver's license. 5. Three recent one-inch bareheaded white background color photos.

14

4

Share

What does the number 35 at the back of the Audi A6L represent?

What noise does a broken bearing make?

What Are the Effects of a Damaged Oxygen Sensor on a Car?

What are the restrictions on pickup trucks on the road?

What to Do When the Windshield Wiper Doesn't Move?

Can Motorcycles Go on the Highway During the Probationary Period?

What are the requirements for the one-inch photo for driver's license renewal?

What does the maintenance light on the Jetour X70 Plus mean?

What are the penalties for out-of-town vehicles without a Beijing entry permit?

What are the reasons for ignition shaking in GAC Trumpchi GS4?

Can I Drive to Get a Tire Repair with 130 kPa Tire Pressure?