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What causes both the EPC and engine warning lights to illuminate simultaneously in a Golf?

1 Answers
OJade
07/30/25 6:43am
epc and engine warning lights illuminating simultaneously indicate a malfunction in the vehicle's mechanical and electronic systems. Specific details are as follows: 1. Overview: The Volkswagen Golf is a classic compact hatchback family car initially launched by FAW-Volkswagen in 1974. Now in its seventh generation globally, it stands as Volkswagen's most-produced and best-selling model. 2. Safety Systems: In terms of active safety, as a compact car featuring standard Multi-Collision Brake system across all trims, the new Golf effectively prevents secondary collision injuries. It integrates multiple active safety systems including Lane Assist, Rear Traffic Alert, Fatigue Detection System, Tire Pressure Monitoring, along with newly added rearview camera and blind spot monitoring.
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Is There a Difference Between a Three-Way Catalytic Converter and a Particulate Filter?

There are certain differences between a three-way catalytic converter and a particulate filter, as detailed below: 1. Different functions: The three-way catalytic converter reduces carbon monoxide (CO) to carbon dioxide, nitrogen oxides (NOx) to nitrogen and oxygen, and hydrocarbons (HC) to carbon dioxide and water, thereby purifying vehicle exhaust. The particulate filter removes over 90% of mechanical impurities, colloids, asphaltenes, etc., from engine oil, ensuring maximum cleanliness of the oil and extending the engine's service life. 2. Different effects: If there are excessive and persistent particulate matter in emissions, stricter control of exhaust emissions is required, leading to the addition of a Diesel Particulate Filter (DPF) to the exhaust system. However, this device does not replace the three-way catalytic converter, as vehicle emissions also contain high levels of nitrogen oxides. Only through the effective decomposition of these oxides into nitrogen and oxygen by the three-way catalytic converter can the formation of acid rain be minimized.
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What is the size of the Geely King Kong steering wheel cover?

Geely King Kong steering wheel cover is 365cm. The functions of steering wheel cover: Installing a steering wheel cover serves to protect the steering wheel. Secondly, some car owners feel that their steering wheel is too small, and the grip doesn't feel quite right, so they need to install a steering wheel cover to improve the hand grip. There are also some car owners who install steering wheel covers purely for decorative purposes, to enhance the appearance of the steering wheel. Types of steering wheel covers: One type is directly slipped on, and the other type is hand-stitched. If classified by material, there is a wide variety. For example, some female friends may prefer fur in winter, while more commonly used materials by car enthusiasts include PU, followed by genuine leather, and higher-end options like suede.
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Why is the Lexus ES reversing camera not displaying?

Lexus ES reversing camera not displaying reasons are as follows: 1. Damaged camera: When the reversing camera of the vehicle is damaged, the vehicle will experience issues such as the reversing camera not displaying or displaying unclearly. It is necessary to immediately replace the camera with a new one. 2. Driving computer malfunction: There are quite a few reasons for the driving computer to malfunction. The specific situation requires going to a 4S shop or repair shop to have the staff use professional equipment for inspection. 3. Poor gear position: Generally speaking, the vehicle will only display the reversing image when the gear is shifted to reverse. If the image is not displayed even when the gear is in reverse, it is mostly due to poor contact of the connecting wires. 4. Dead battery: When the vehicle's battery is dead, not only will the reversing camera not display, but all electronic devices in the vehicle will basically not function normally. In such a situation, the vehicle's battery must be charged immediately.
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Can the idle speed of Volkswagen Sagitar be adjusted?

Volkswagen Sagitar's idle speed can be adjusted. Methods to adjust idle speed: Manual adjustment: Shift gears around 1500-1700 RPM, not exceeding 2000 RPM, which means shifting at the right moment; Automatic idle speed adjustment. High RPM during cold start is normal, and the RPM will return to idle speed once the water temperature rises. However, 500 RPM is too low; the normal idle speed should be between 800-900 RPM. The car's computer should control the throttle opening based on the normal idle speed. Introduction to car idle speed: Car idle speed refers to a working condition. When the engine is running without load, it is called idle speed, meaning the car is in neutral gear. The RPM of the engine at idle is called idle speed. Idle speed can be adjusted by modifying the throttle opening size, etc. Idle speed means the engine is 'working without output.'
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Why does the car's water temperature fluctuate between rising and falling?

The reasons for the car's water temperature fluctuating between rising and falling are: 1. Damage to the thermostat in the engine cooling system; 2. The ambient temperature where the car is located is too low. Larger displacement engines heat up the water temperature faster, while smaller displacement engines heat up slower. If the water temperature exceeds 100 degrees, it indicates a problem with the vehicle's cooling system, and it is necessary to have it checked at a 4S shop. This also indicates that antifreeze will not have this issue. Leakage in the car's cooling system can lead to insufficient antifreeze, which in turn causes the antifreeze temperature to rise. If the antifreeze level is found to be low, the first step is to check for leaks. If there are no leaks, the same type of antifreeze should be added promptly. Do not add tap water or other types of antifreeze to avoid dilution or sedimentation, which can lead to failure or malfunction. Drivers should always monitor the antifreeze temperature while driving. If an abnormality is detected, reduce speed and stop the car, but do not immediately turn off the engine. Check whether the cooling fan and circulation water pump are functioning properly.
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What is the function of the head-up display in the BMW X3?

The head-up display in the BMW X3 serves as a heads-up display system that provides excellent assistance for driving safety. Below is relevant information about the BMW X3: 1. Body dimensions: The BMW X3 measures 4717mm in length, 1891mm in width, and 1689mm in height, with a wheelbase of 2864mm. 2. Configuration: It is equipped with a 2.0TL4 engine, featuring turbocharged intake, with a maximum horsepower of 184ps and a maximum torque of 290nm. The transmission is an 8-speed automatic manual, and the top speed is 210 kilometers per hour. 3. Power: The BMW X3 is front-wheel drive with a front suspension type of double-joint shock absorber suspension and a rear suspension type of multi-link independent suspension. The steering assistance type is electric power, and the body structure is load-bearing.
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