What to Do When the ABS Light on the Car Dashboard Comes On?

1 Answers
EleanorDella
07/30/25 7:55am
Clean the dirt on the vehicle speed sensor and adjust the gap between the vehicle speed sensor and the signal ring to restore normal operation. Alternatively, check the wiring connections and reconnect any loose ones. How ABS Works: During braking, the ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor, closes the normally open input solenoid valve on the wheel that is starting to lock up, and keeps the braking force unchanged. If the wheel continues to lock up, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to drop rapidly due to the direct connection to the brake fluid reservoir, preventing the wheel from completely locking up due to excessive braking force. This keeps the braking state at the optimal point (slip ratio S of 20%), ensuring the best braking effect and the safest driving. Functions of ABS: Maximize the effectiveness of the brakes, reducing braking time and distance. Effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. Allow steering during emergency braking, providing good steering control. Avoid severe friction between the tires and the ground, reducing tire wear.
Was this review help?
18
1
Share
More Forum Discussions

Are Hazard Warning Flashers the Same as Emergency Flashers?

Hazard warning flashers and emergency flashers are the same. The hazard warning flasher is a button switch with an exclamation mark inside a red triangle, commonly known as emergency flashers or hazard lights. It is a signal light used to alert other vehicles and pedestrians that the vehicle is experiencing a special situation. When the emergency flashers are turned on, it indicates that the vehicle is in an unusual condition and may require assistance or caution. Common situations for activating hazard warning flashers include: 1. When the vehicle malfunctions; 2. Breakdown on the highway; 3. Towing a faulty vehicle; 4. Emergency malfunction while driving; 5. Temporary parking on the road; 6. In case of a traffic accident, the owner should not only turn on the emergency flashers but also set up a triangular reflector about 200 meters behind the vehicle to warn approaching vehicles and prevent rear-end collisions.
17
4
Share

What to Do If Coolants Are Mixed?

If coolants are mixed, it is necessary to completely drain the coolant from the radiator, then rinse it thoroughly with pure water, and refill it with new coolant. Different colors and brands of antifreeze may have different chemical compositions, and mixing them can easily cause adverse reactions, leading to reduced antifreeze effectiveness. It may even generate flocculent substances that can clog the cooling system. In severe cases, it can cause abnormal corrosion to the engine water channels and cooling pipes. Antifreeze prevents the coolant from freezing and expanding during cold seasons, which could crack the radiator or damage the engine cylinder block. Coolant should be used year-round. As part of regular vehicle maintenance, the engine antifreeze should be replaced annually.
1
1
Share

What are the reasons for the car's one-button start not responding?

The reasons for the car's one-button start not responding are: 1. The vehicle key is out of battery or the battery is about to run out; 2. The radio waves of the car key are being interfered with; 3. The one-button start function cannot be used when the steering wheel is locked; 4. Car malfunctions causing the one-button start to not respond, such as a dead battery or insufficient voltage, or short circuits in electronic components. The principle of one-button start is based on radio frequency identification technology, which automatically locks and unlocks the doors through the chip in the smart card carried by the owner. When the owner approaches the vehicle, the car automatically recognizes the owner's identity, the door locks will automatically open, and the anti-theft system will be deactivated, eliminating the need to search for a key.
2
2
Share

What are the symptoms of aging engine mounts?

Engine mount aging manifests as engine vibration: 1. The driver may feel engine vibration when reversing or starting; 2. The engine vibration is more noticeable when the vehicle is cold, and improves after warming up; 3. The driver can feel vibration in both the steering wheel and brake pedal during engine idle; 4. When driving over speed bumps, the driver may hear a "thud" sound from the engine. Engine mounts are rubber blocks that secure the engine to the frame. As the engine operates, it generates vibrations, and the mounts prevent resonance between the engine and frame, providing cushioning and shock absorption to ensure comfort for both the driver and passengers.
18
3
Share

Can a Car Be Charged If It Starts But Doesn't Move?

If a car starts but doesn't move, it can still be charged. However, the prerequisite is to ensure that all electrical appliances in the car (except for the engine operation) are turned off. Below are the specific details about battery charging: 1. As long as the generator is working, it can charge the battery, and the power source of the generator comes from the engine. 2. After the car starts, the engine begins to work, and it transmits power to the generator via a belt, initiating the charging process for the battery. 3. When the vehicle is in motion, pressing the accelerator increases the engine's speed, providing more power to the generator. Consequently, the generator's output increases, leading to more charging for the battery. 4. During idle operation, the generator runs at a slower speed, resulting in limited power output. 5. The generator does not charge the battery indefinitely. The battery is equipped with a sensor; if the sensor detects that the battery is fully charged, it will stop further charging.
6
5
Share

Where to Place the ETC Device on the Windshield?

The ETC device is generally installed in the upper middle part of the windshield for passenger vehicles, while for large vehicles like trucks and buses, it is installed 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. For vehicles with factory-installed or aftermarket explosion-proof film, which may affect microwave signal transmission, the device should be installed in the microwave window area. ETC stands for Electronic Toll Collection. To apply for an ETC device, you need to provide the original and photocopies of the vehicle owner's valid ID and vehicle registration certificate. If someone else is handling the application, they must also bring their valid ID. The photocopy of the vehicle registration certificate should include the page with the most recent annual inspection stamp. Additionally, a bank card for deducting highway toll fees is required, and the vehicle must be registered under the name of an individual aged between 18 and 60. For company vehicles, the required documents include: A letter of introduction from the vehicle owner (with company seal); a photocopy of the organization code certificate or business license (with company seal); the original ID of the agent; the original vehicle registration certificate; and the vehicle to be registered for ETC. Here are some considerations for installing ETC: Do not obstruct the driver's view. The best location is behind the rearview mirror: Many car models have windshields with a steep angle, which can reduce the driver's field of vision. Installing the ETC device without considering this may increase blind spots. Placing it behind the rearview mirror on the right side can help avoid obstructing the view. Do not interfere with charging: The ETC device requires power but generally does not need charging or battery replacement, as it has a built-in solar panel for self-charging. Therefore, avoid installing it on the windshield's blackened areas or positions that may block the solar panel. Once installed, do not remove it casually: The adhesive button in the middle is an anti-tamper lever connected to a switch. After installation, the windshield presses the lever in. If removed, the lever pops out, triggering the switch and locking the device, rendering it unusable. You would then need to visit an ETC service point to unlock it. This feature prevents multiple vehicles from sharing one device. When using ETC, note the following: The ETC transaction sensing range is 8 meters. To avoid paying for the vehicle in front due to its faulty ETC device, maintain a distance of at least 10 meters. The ETC lane recognizes vehicles at a speed of 20 km/h; driving too fast may result in failed fee deductions. Also, insufficient balance on a debit card linked to ETC can cause payment failures.
5
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.