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

What Does It Mean When the Car Battery Light Comes On?

2 Answers

StNaomi

07/24/25 3:33am

The battery is the only component in a vehicle that can store electrical energy. When the alternator is not working, the battery supplies all the power to the vehicle. If there is an issue with the car battery, the battery warning light will illuminate. Below are specific scenarios when the battery light comes on: 1. The first scenario commonly occurs when the vehicle is stationary. Upon turning the ignition key, you may notice the battery warning light (red) on the dashboard. This usually happens due to low battery voltage, triggering the alarm. First, check whether the battery voltage is within the standard range—typically, the battery will alert if the voltage drops below 9 volts. Measure the battery voltage to ensure it falls within the normal range, which is usually between 11.5V and 12.5V. If the voltage is too low, start the engine to recharge the battery. 2. The second scenario involves checking whether the battery terminals (positive and negative) are loose. Try shaking them by hand to see if they are loose or corroded. If corrosion is present, clean it. 3. The third point is to inspect the battery for any physical damage, such as cracks in the casing, swelling, or even leakage of battery fluid. If any of these issues are found, prompt repair is necessary. If no problems are detected, the issue might lie with the battery monitoring system, requiring inspection and repair at a 4S shop or repair facility.

Was this review help?

4

3

Share

PresleyMarie

08/10/25 11:09pm

Last time the battery light came on my car's dashboard, it turned out the voltage regulator in the alternator was faulty and couldn't charge the battery. When this light comes on, there's an 80% chance there's an issue with the charging system - the first thing to check is whether the alternator belt is loose or broken. Then you need to test the alternator's output voltage, which should normally be between 13.5-14.5 volts. If the voltage is fine, check for oxidized or loose charging circuit connections, especially those greenish-white corrosive deposits on the battery terminals. The most troublesome issue is damaged diodes inside the alternator, which can cause abnormal charging. I recommend using a multimeter to measure the voltage immediately - if the light stays on continuously for over half an hour, don't drive any further as the car could break down at any moment.

Was this review help?

20

5

Share

Expand All

More Forum Discussions

Can you park on the yellow line at the curb?

Parking is not allowed if the curb is marked with a yellow line. Parking in the yellow line area is considered illegal parking, and violating this traffic prohibition will result in a fine of 200 yuan plus 3 demerit points. The yellow line is a type of traffic marking called a "no-parking line." Compared to the "red cross" no-parking sign, the no-parking line can more clearly and prominently indicate the specific area where parking is prohibited. Here are some details about the yellow line: 1. The yellow line painted on the curb is called a "no-parking line at the roadside." Parking is prohibited where a solid yellow line is painted, while a dashed yellow line indicates that temporary parking is allowed—stop briefly and leave immediately, but long-term parking is prohibited. 2. The "no-parking line" is set up by the public security traffic police department in accordance with the "Urban Road Traffic Signs and Markings Setting Standards." Its function is the same as the no-parking sign, reminding drivers not to park vehicles arbitrarily in this area.

What Causes Engine Power Loss During Acceleration?

There are several reasons for engine power loss during acceleration: 1. Severe carbon buildup: When a vehicle operates at low RPM for extended periods, carbon deposits can form and clog the fuel system, leading to acceleration difficulties. In this case, carbon cleaning is required. 2. Poor fuel quality: Using low-quality fuel can affect the gasoline filter and fuel lines, potentially causing fuel supply issues and resulting in weak acceleration. 3. Exhaust system malfunction: This is usually caused by a broken catalytic converter. A clogged exhaust pipe will reduce engine power output. 4. Clutch failure: In manual transmission vehicles, clutch slippage can cause the engine RPM to increase during acceleration without a corresponding increase in vehicle speed. 5. Engine overheating: When an engine operates under excessive load, cylinder temperatures rise sharply, weakening acceleration capability. In such cases, engine cooling measures are necessary. 6. Fuel system problems: Issues like clogged fuel injectors or a blocked fuel filter can prevent complete fuel delivery, causing insufficient power output.

What color is the high-speed card retrieval button?

The high-speed card retrieval button is green. Typically, there is only one high-speed card retrieval button, and you just need to press it once. If there are buttons of two different colors, you should press the green one. If your car frequently travels on highways, you can apply for an ETC (Electronic Toll Collection) device, which allows for toll payment without stopping. The following points should be noted when entering a toll station: 1. Slow down before approaching the toll booth and choose the appropriate lane for your vehicle type, such as lanes for large vehicles, small vehicles, or ETC-exclusive lanes. 2. When retrieving the card, pay attention to the distance between your vehicle and the card dispenser. Adjust your position before getting close to the dispenser. When stopping to retrieve the card, remember to engage the handbrake or electronic parking brake—do not rely solely on the foot brake. 3. If the card is out of reach, you may get out of the car to retrieve it at the toll station. However, ensure the vehicle is completely stopped, and do not unfasten your seatbelt inside the car to retrieve the card.

What are the ingredients of glass oil film remover?

Glass oil film remover contains abrasive particles and oil-repellent components. Introduction to glass oil film: Glass oil film is divided into two types: external oil film and internal oil film. External oil film: refers to the stubborn layer formed by the accumulation of various environmental impurities on the outer side of the glass over time. The microscopic surface of this impurity layer is uneven, with water trapped in the gaps, so when the wiper blade passes over it, a continuous mist-like film can be seen. Internal oil film: various oily suspended particles in the air can adhere to the inner side of the glass, such as exhaust fumes, air conditioning, low-quality interior care products, smoking, and many other factors, which can accumulate over time to form an internal oil film. Function of glass oil film remover: It provides a quicker and more efficient way to handle regular dirt on the glass surface, effectively delaying the formation of external oil film and thoroughly cleaning internal oil film. It is used for daily cleaning of glass, generally after each car wash, and can be used both inside and outside the vehicle. It is usually suitable for special surfaces such as tinted glass, coated glass, and organic glass.

What is the Matching Relationship Between Car Gears and Speed?

The matching relationship between car gears and speed is as follows: Generally, 1st gear can be used for speeds from 0 to 20 km/h, 2nd gear for 20 to 30 km/h, 3rd gear for 30 to 40 km/h, 4th gear for 40 to 50 km/h, and 5th gear for speeds of 50 to 60 km/h and above. Here are some related details: 1. The speed, gear, and RPM of the car should be matched. The above-mentioned ranges are not fixed. If you need to overtake, you should downshift. For aggressive driving, wait until the engine RPM reaches the redline before shifting. For highway cruising, use the highest gear. 2. Car engines generally have an economical RPM range where the engine is more fuel-efficient. Keeping the engine RPM within this range while driving can make the car more fuel-efficient and comfortable. 3. While driving, if the RPM is too high, upshift. If the RPM is too low, downshift. 4. When overtaking, downshift to achieve higher torque. 5. During highway cruising, use the highest gear to lower the engine RPM and improve fuel economy. 6. In daily driving, road conditions can change rapidly, so it's important to adapt flexibly.

How long do I have to wait if there is no car in stock?

If there is no car in stock, it is expected to take about 7-30 days. In fact, the specific pick-up time is uncertain under normal circumstances. For example, some hot-selling or newly launched models may have a longer waiting time due to high demand and limited supply, as the manufacturer needs time to produce more. On the other hand, for less popular models or those with ample inventory at the manufacturer, the pick-up time can be much faster. Below is a detailed introduction to car 4S shops: Sales and After-sales: 4S shops can be divided into sales and after-sales sections. Sales include new car sales, used car sales, corporate client sales, beauty and accessory sales, etc. After-sales include routine maintenance, insurance claim handling, manufacturer warranty claims, car insurance sales, etc. Brand Dealers: As brand dealers, 4S shops must adhere to the requirements of the automaker, including unified store design, standardized management, consistent service standards, unified brand culture, and coordinated marketing activities. Automakers also assess the operational conditions of 4S shops, as they represent the brand's culture and values and serve as the direct channel for customers to interact with the car brand.

Trending Ranking

Will Insurance Cover Accidents Caused by Mistaking the Accelerator for the Brake?

How to Replace the Rear Brake Pads of an Atenza?

What is the RPM of a BMW X3 at 120 km/h?

How to adjust the lights on Volkswagen Bora?

Can a Newly Purchased Car Go on Long-Distance Trips?

Is It Normal for a Battery to Get Hot While Charging?

Differences between Haval H6 and Haval F7

What engine does Great Wall WEY use?

What does synthetic oil 5w30 mean?

What Causes Jerking During Acceleration in Gas-Powered Vehicles?

More Forum Discussions

What Causes the Steering Wheel to Become Lighter?

What Causes a Urea Vehicle to Emit Black Smoke?

What is the solution for the JAC EPC light coming on?

What Causes Noise in the Steering Wheel When Turning?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.