Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

Why does the warning light turn on and then off by itself?

1 Answers

VanEva

07/30/25 9:34am

Engine warning light turning on and then off is a normal phenomenon. When the vehicle's power is turned on but the engine has not yet been started, various warning indicators on the car - including the engine, coolant temperature, battery, airbag, etc. - will all illuminate simultaneously. After the vehicle is started, these lights will automatically turn off. This is the vehicle's self-diagnostic function in operation and is completely normal. Here is additional information: Vehicle self-diagnosis: This occurs because all vehicles are equipped with a self-protection system designed to inform the driver about internal vehicle status changes and ensure preparedness. This helps prevent accidents caused by vehicle issues. Therefore, the engine light turning on and then off is normal and nothing to worry about. How to handle a flashing engine warning light: If the car won't start, this may indicate a fuel pump or ignition component failure - call for assistance immediately. If the warning light is on but there are no noticeable driving abnormalities, this might just be a sensor malfunction - you can continue driving temporarily but should proceed at low speed to a repair shop. If the engine warning light comes on and the vehicle can still move but exhibits severe vibration or loss of power during acceleration, you should stop the vehicle promptly and call for roadside assistance.

Was this review help?

12

3

Share

More Forum Discussions

What does reset mean on a car?

Reset literally translates to reset, and its function is basically to reset the information in the car's dashboard information center, except for the total mileage. The function of reset: The car reset and trip buttons are basically located on the multifunction steering wheel, and some models will place them on the left side of the driver's seat. Although the positions are different, the functions of these two buttons are actually the same. The function of confirmation: ok/reset is a multifunction button, which serves as a confirmation button when adjusting the clock; when in the short-distance mileage/total mileage function, it serves the purpose of switching display/reset.

What is 120 miles per hour on the odometer?

Domestic speedometers are generally in KM/H, which should be referred to as 120 KM/H. However, many people say 120 "ma" or 120 "mai," which are actually misconceptions. One "ma" per hour is equivalent to one kilometer per hour. China's representation method: Since China uses the metric system for speed units, the correct unit and term for speed in China is kilometers per hour, abbreviated as Km/h in English. Foreign representation methods: On the speedometers of vehicles manufactured in China (including foreign models that use the metric system), you can see this unit designation. In a few countries like the United States and the United Kingdom, the imperial system is used, with the unit being miles per hour, abbreviated as MPH in English.

What are the types of traffic markings?

As a type of traffic guidance indicator, traffic markings come in various forms. White dashed and solid lines: White dashed lines and white solid lines are the most common markings on roads. White dashed lines are used to separate lanes traveling in the same direction, allowing lane changes across the lines in dashed sections. White solid lines, such as those on bridge surfaces, prohibit crossing or overtaking. Yellow dashed and solid lines: Yellow solid lines and yellow dashed lines are used to distinguish lanes traveling in opposite directions, typically appearing in the center of the road. Multi-lane roads feature double yellow lines, while roads with fewer lanes use single yellow lines. No-parking lines: These are white or yellow solid lines on the shoulder, indicating that parking is prohibited in this section.

What is the file number of a motor vehicle driver's license?

Driver's license file number is a unique number generated by the traffic police department to distinguish driver's licenses, which is equivalent to the ID card of the vehicle owner. The uniqueness of the file number: A person may have two driver's licenses with the same license number, but the file number is unique and will not be duplicated. The driver's license file number is on the duplicate of the driver's license, usually located on the right side of the third line at the top of the duplicate page. Introduction of the file number: The driver's license file number adopts a 12-digit numerical code, with the first four digits from left to right being the administrative division code and the last eight digits being the sequential number. Its main purpose is to establish a driver information management system for convenient query.

How Long Can an Oil-Burning Car Last?

An oil-burning car's lifespan depends on the severity of the oil consumption. If the car consumes 3L of oil per 10,000 kilometers, it is considered a serious condition. In such cases, a major engine overhaul is required, including replacing relevant seals or components and cleaning carbon deposits from the engine. Below are the reasons for oil burning: Dirty Oil: Failing to change the oil at the recommended intervals can cause increased wear on bearings, cylinders, pistons, and piston rings. The resulting gaps allow oil to enter the combustion chamber and burn. Excessive Oil Pressure: Incorrect oil pressure settings or a faulty pressure relief valve can lead to excessive oil pressure, causing the engine to be oversaturated with oil. This not only affects engine performance but also reduces fuel efficiency.

What kind of accident disqualifies a vehicle from 6-year exemption from inspection?

Vehicles involved in traffic accidents resulting in casualties are not eligible for the inspection exemption policy. Even within 6 years, they must still undergo inspection every 2 years as per the original regulations. Generally: For minor traffic accidents, the vehicle can continue to enjoy inspection exemption. However, if the accident is severe, the vehicle loses this privilege. The exemption clause explicitly states that vehicles involved in major accidents are ineligible for inspection exemption. If the accident is significant, the vehicle must undergo inspection at a testing station. Consequences of overdue inspection: Delaying the annual inspection may result in the vehicle being impounded and traffic fines. Additionally, if the vehicle's inspection date is approaching or overdue, it should be promptly taken to an inspection facility for testing.

Trending Ranking

What are the causes of brake pull?

Where is the cabin air filter located in the Tiguan L?

Are there rewards for capturing vehicles using emergency lanes?

What Does a Car's Turning Radius Mean?

How fast can a 1200W motor with 72V run?

What content is captured by highway violation cameras?

What is the range of new energy vehicles?

Why is the Subject 2 Driving Test So Strict?

Will crossing the line on the highway definitely be captured by cameras?

What is the Plus model of a car?

More Forum Discussions

Can the emergency lane be temporarily opened for driving?

Can vehicle inspection be done during National Day holiday?

What brand is LANVIGATOR tires?

Why is there no air coming from the car air conditioner?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.