Why is the car ABS warning light on?

2 Answers
RileyDella
07/25/25 6:17am
Reasons for the car ABS warning light being on: The ABS anti-lock braking system has malfunctioned, most likely due to a faulty sensor in the anti-lock system, a broken signal line, or the failure of the anti-lock function. It is best to promptly visit a 4S shop for inspection and repair. The role of ABS: It prevents loss of steering control and wheel skidding during emergency braking, ensuring that the wheels do not lock up during braking. This prevents the tires from rubbing against the ground at a single point, thereby increasing friction and achieving a braking efficiency of over 90%. Additionally, it reduces brake wear and extends the service life of brake drums, discs, and tires by up to twice as long.
Was this review help?
10
3
Share
FelicityMarie
08/10/25 6:06pm
I've been driving for over 20 years and encountered the ABS light coming on several times. It usually indicates an issue with the anti-lock braking system, most commonly due to dirty or damaged wheel speed sensors. The wheel speed sensors are located near the wheel hubs. If there's excessive mud on the road or impact damage, they may read data incorrectly, triggering the light. It could also be caused by loose electrical connections or a malfunction in the ABS module itself, preventing the controller from receiving correct signals. Last time my car's light came on, inspection revealed a small stone stuck on the sensor - cleaning it fixed the issue. However, if it's a module problem, replacement parts are necessary. ABS is crucial; when the light is on, it means wheels may lock up during braking on slippery surfaces, greatly increasing the risk of skidding and loss of control - extremely dangerous. My advice: don't delay when you see the light. Immediately visit a repair shop to scan for trouble codes and identify the specific cause before fixing. Safety first - don't risk major accidents to save small money.
Was this review help?
20
1
Share
Expand All
More Forum Discussions

What to Do When Car Electronic Key Fails?

Solutions for car electronic key failure: Every remote key comes with a mechanical key, which can be used to open the car door: 1. Slide the safety switch on the remote key. There is a safety switch on the remote key; sliding it will reveal the hidden mechanical key. Remove the mechanical key. 2. Insert the mechanical key into the car door lock to open the door. You need to apply a bit of force when turning the mechanical key. Hearing an unlocking sound indicates that the car lock has been released. Possible causes and solutions for car electronic key failure: 1. The car electronic key may fail due to a dead battery. Solution: Replace the key battery with a new one promptly. 2. The car key or the car's anti-theft system may be malfunctioning. Solution: Take the car to a 4S shop for inspection and repair by a professional. 3. It may be caused by signal interference. Solution: If possible, switch to manual locking immediately. If manual locking is not available, move the car a certain distance before locking it. Also, be aware of any suspicious individuals nearby. If there are suspicious people around, call the police or seek help from the radio management department immediately.
7
4
Share

How to reset the maintenance light on a 2016 Octavia?

Turn off the ignition, press and hold the "0.0/SET" (reset/set) button on the instrument panel, then turn on the ignition while continuing to hold the "0.0/SET" button with your left hand. When one of the following messages appears on the instrument panel display, release the "0.0/SET" button. Here is additional information about car maintenance: 1. Car maintenance refers to the regular inspection, cleaning, replenishment, lubrication, adjustment, or replacement of certain parts as a preventive measure, also known as car servicing. 2. The purpose of car maintenance is to keep the vehicle clean, maintain normal technical conditions, eliminate potential hazards, prevent faults, slow down the deterioration process, and extend the service life.
11
2
Share

What is the fuel tank capacity of the 2017 Jetta?

The fuel tank capacity of the 2017 Jetta is 55 liters. The vehicle is equipped with a 1.4L, 1.5L, or 2.0L naturally aspirated engine and features a front-engine, front-wheel-drive layout. During actual refueling, the amount of fuel may exceed the marked capacity. This is because the fuel tank capacity specified by the manufacturer is measured from the bottom of the tank to the safety limit. There is additional space from the safety limit to the tank opening, which is designed to allow for fuel expansion due to temperature increases without causing overflow. If fuel is filled up to the tank opening during refueling, the actual fuel amount may exceed the marked capacity. To check the remaining fuel level, drivers can observe the fuel gauge on the right side of the instrument panel, which is marked with 'E' and 'F'. When the needle is close to 'E', it indicates low fuel, while proximity to 'F' means the tank is nearly full.
11
1
Share

Are Car Sealing Strips Useful?

Sealing strips are useful. They can serve functions such as windproofing, leak prevention, and shock absorption, reducing noise during car rides. There are various types of sealing strips, including water cut strips, door frame strips, door opening strips, engine cover strips, trunk strips, sunroof strips, and front and rear windshield strips, as well as some decorative strips. More information about car sealing strips is as follows: 1. Installing car sealing strips can relatively improve the sound insulation effect of the car, and the sound of closing the door will appear more solid. 2. It will enhance the sealing effect of the car. Whether in summer or winter, air conditioning is used when driving the car. Therefore, only by installing car sealing strips can the sealing effect be better, and in summer, there is no need to worry about the cold air escaping.
1
5
Share

How often should a new car undergo annual inspection?

New cars require an annual inspection in the sixth year. Below is more information about vehicle annual inspections: Specific inspection content: Check whether the engine, chassis, body, and auxiliary equipment are clean, complete, and effective; whether the paint surface is uniform and aesthetically pleasing; whether major assemblies have been replaced and match the initial inspection records; verify whether the vehicle's braking performance, steering control, lights, exhaust, and other safety features comply with the technical requirements for safe operation of motor vehicles; inspect whether the vehicle has undergone modifications, alterations, or transformations, and whether the driving license, license plate, and vehicle records match the current condition of the vehicle, including any changes, and whether approval and modification procedures have been completed; check for damage, alterations, or unclear markings on the license plate, driving license, and enlarged license plate markings on the vehicle, and whether replacement is necessary. Precautions for vehicle annual inspections: Vehicles should undergo annual inspection within three months before the expiration of the motor vehicle inspection validity period. According to relevant laws, the owner of the motor vehicle must first resolve any related traffic violations or accidents before following the legal procedures to apply for the annual inspection.
7
1
Share

Where is the best place to install ETC?

For small cars, the ETC is generally installed in the upper middle part of the front windshield. For large vehicles such as trucks and buses, the installation position is in the lower middle part. The suitable installation position should be no lower than 1.2 meters and no higher than 2.5 meters, with an installation angle between 30 to 90 degrees. If the vehicle has a sunshade film or if a sunshade film is installed later, it may affect the signal transmission of the microwave communication link. In such cases, the ETC should be installed in the microwave sunroof strip. ETC is the abbreviation for Electronic-Toll-Collection, meaning electronic toll collection system. To apply for ETC, you need to provide the original and photocopy of the vehicle owner's valid ID card and driving license. If the application is not made by the owner, the agent's valid ID card is also required. The photocopy of the driving license should include the page with the most recent annual inspection stamp. Additionally, a bank card for deducting highway tolls is required, and the vehicle must be registered under the name of an individual aged between 18 and 60. Here are some precautions for installing ETC: Do not block the view; it is best to install it behind the rearview mirror: Many car models have a large inclination angle of the windshield, which reduces the driver's field of vision. If this is not considered during ETC installation, it will increase the driver's blind spot. Installing it on the right side behind the rearview mirror can avoid blocking the view. Do not affect charging: The ETC electronic tag consumes power but generally does not require charging or battery replacement because it has a solar panel on the back that can charge itself. Therefore, during installation, avoid the black areas on the windshield and positions that may block the solar panel. Once installed, do not remove it casually: The button in the middle of the adhesive is an anti-removal lever connected to a switch. After the electronic tag is installed, the windshield will press the anti-removal lever in. If the tag is removed casually, the lever will pop out and trigger the switch, locking the electronic tag and making it unusable. In such cases, you will need to visit an ETC service point to unlock it. This is designed to prevent multiple vehicles from sharing one device. Precautions for using ETC: The ETC transaction sensing area is 8 meters. To prevent the ETC device of the vehicle in front from malfunctioning, maintain a distance of more than 10 meters from the vehicle in front to avoid automatic toll payment for the vehicle ahead. The recognition speed for ETC lanes is 20 kilometers per hour. Driving too fast may result in failure to read the vehicle's device information and lead to toll deduction failure. When using a debit card bound to ETC, insufficient balance may also cause toll deduction failure.
9
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.