Does spraying insecticide on a car affect the paint?

What Does Subject 4 Test Cover?

Subject 4, also known as the Subject 4 theoretical test or driver's theoretical test, is part of the motor vehicle driver's license assessment. The main content includes: safe and civilized driving operation requirements, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods for situations such as tire blowouts, and knowledge of post-traffic accident procedures. The Subject 4 test consists of 50 questions, primarily presented in the form of case studies, images, animations, etc. The total score is 100, with a passing score of 90. After the implementation of the Ministry of Public Security's Order No. 123, the Subject 3 test was divided into two parts: in addition to the road test, a safety and civilization knowledge test was added, commonly referred to as "Subject 4," which assesses "driving ethics." Because this test is conducted after Subject 3, it is commonly referred to as the Subject 4 test. Officially, there is no Subject 4 in the official terminology. Before the test, students can study traffic regulations through driver's mock test software on mobile or computer devices.

4

3

Share

How to Distinguish a Good Oxygen Sensor from a Bad One?

Methods to determine the condition of an oxygen sensor are as follows: the malfunction indicator light turns on, the engine may shake, there are abnormal noises from the exhaust, a pungent odor is present, fuel consumption increases, and sometimes there is a lack of power when going uphill. Below is relevant information about automotive oxygen sensors: 1. Definition: The automotive oxygen sensor is a critical sensing component in the electronic fuel injection engine control system. It is a key part in controlling vehicle exhaust emissions, reducing environmental pollution caused by vehicles, and improving the fuel combustion quality of the car engine. Oxygen sensors are installed on the engine's exhaust pipe. 2. Function: The main role of the automotive oxygen sensor is to enable the engine to obtain the optimal concentration of the air-fuel mixture. It measures whether there is an excess of oxygen in the exhaust after engine combustion and converts the oxygen content into a voltage signal transmitted to the engine computer, allowing the engine to achieve closed-loop control targeting the excess air factor.

1

Share

Three Guarantees Regulations for Car Windshields?

Under the Three Guarantees regulations for car windshields, if the same fault is repaired more than 5 times, the car can be replaced; if the engine is replaced twice and still does not function properly, the car can be returned; and if repairs take more than 5 days, the owner has the right to use a spare car. Here is an introduction to the relevant content: 1. Failure faults: Within 60 days from the date of purchase as stated on the sales invoice or within 3,000 kilometers of driving, if there are failures in the steering system, braking system, body cracking, or fuel leakage, the owner can choose to exchange or return the car. 2. Safety faults: If serious safety performance faults are repaired twice and still not resolved, or if new serious safety performance faults occur, the owner can choose to return or exchange the car.

12

2

Share

When Did China's National III Emission Standard Start?

China's National III emission standard was officially implemented starting from July 1, 2008, marking the "starting time" of National III. Below are relevant details about the National III standard: 1. Introduction: The National III standard represents China's third-stage vehicle emission standard. Equivalent to Europe's Euro III emission standard, it requires tailpipe pollutant levels to match Euro III specifications, with the key difference being mandatory installation of OBD (On-Board Diagnostics) systems in new vehicles. The OBD system features increased monitoring points and enhanced detection capabilities, including oxygen sensors at both the inlet and outlet of the three-way catalytic converter. Through real-time emission monitoring, it ensures compliance and better enforces Euro III standards. 2. Application Scope: Primarily applicable to light gasoline and diesel vehicles under 3.5 tons (equivalent to Euro III), nationwide implementation began on July 1, 2007. The National III standard introduced significant improvements, notably emphasizing -7°C cold-start emission requirements (unique to China) and implementing OBD systems that automatically alert drivers when emission-related issues occur during vehicle operation, requiring prompt repair at service stations.

13

1

Share

Where to Complain About Duplicate ETC Charges?

If there is a duplicate deduction from your ETC account, it is recommended to first call the ETC customer service hotline to report the issue to the service personnel; then, go to the bank to print a detailed statement of your toll transactions and provide it to the staff at the ETC service center for verification. Precautions for Using ETC: The ETC transaction sensing range is 8 meters. When encountering a vehicle in front that has stopped, to prevent the vehicle's ETC device from malfunctioning or not having an ETC device at all, maintain a distance of more than 10 meters from the vehicle in front to avoid automatic sensing and paying for the vehicle ahead. The recognition speed for ETC lanes is 20 km/h. If the vehicle speed is too fast, the system will be unable to read the vehicle's device information, leading to a failed charge. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag falls off or becomes loose, will cause the electronic tag to become invalid. It can be taken to the bank where the ETC card was issued or to the highway service center for inspection. If the loosening or detachment was not due to human error, it only needs to be reactivated. When using a debit card linked to ETC, insufficient balance can also cause a charge to fail. Follow the guidance of on-site staff to use the manual MTC lane, where you can pass by paying with cash or swiping a card. If the car's windshield is too thick, it may cause poor sensing. This is particularly important for vehicles that have had their windshields replaced after an accident or for those with modified front windshields.

11

0

Share

Why does the Roewe i5 fuel gauge show a red E when full?

The Roewe i5 fuel gauge displaying a red E when full is a standard design feature of this model. Here are some related details about the Roewe i5: 1. Exterior: The dimensions of the currently available Roewe i5 models are 4601mm in length, 1818mm in width, 1489mm in height, with a wheelbase of 2680mm. The front fascia of the Roewe i5 adopts a winged dynamic wide-body design, featuring a trapezoidal front grille with straight lines and horizontal chrome trim decorating the mesh. The headlights on both sides connect to the grille area, showcasing sharp lines and a distinctive, aggressive light arrangement with high recognizability. 2. Powertrain: The currently available Roewe i5 models are equipped with either a 1.5L or a 1.5T engine, paired with one of three transmissions: a 5-speed manual transmission, a CVT continuously variable transmission, or a 6-speed dual-clutch transmission. The 1.5L engine delivers a maximum output power of 88 kW, a maximum torque of 150 N·m, a top speed of 185 km/h, and a combined fuel consumption of 5.5L/100km as per the Ministry of Industry and Information Technology. The 1.5T engine offers a maximum output power of 124 kW, a maximum torque of 250 N·m, a top speed of 200 km/h, and a combined fuel consumption of 5.7L/100km as per the Ministry of Industry and Information Technology.

6

2

Share

Does spraying insecticide on a car affect the paint?

What Does Subject 4 Test Cover?

How to Distinguish a Good Oxygen Sensor from a Bad One?

Three Guarantees Regulations for Car Windshields?

When Did China's National III Emission Standard Start?

Where to Complain About Duplicate ETC Charges?

Why does the Roewe i5 fuel gauge show a red E when full?

How Long Does a Smart Key Battery Last?

What Causes a Car Air Conditioner to Not Cool Properly?

What to Do If All 12 Points Are Deducted During the Probationary Period?

Which Side Window of a Car is Weaker?