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What Causes Automatic Braking While Driving?

3 Answers

AmeliaMarie

07/29/25 10:31pm

If the vehicle engages in automatic braking while driving without any obstacles ahead, it indicates an issue with the radar or system, and a check-up at a 4S shop is recommended. More information about vehicle braking is as follows: 1. Braking: Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other transport tools, or machinery. The braking device is a mechanical deceleration device, also called a retarder. 2. Braking System: The braking system consists of a control system, hydraulic system, and power assist system. The control system includes the pedal, handbrake, etc. The hydraulic system comprises hydraulic oil, brake pump, and hydraulic pipes. The power assist system is the vacuum booster pump. The electronic control system consists of the ABS pump, ABS sensors, and ABS computer. The execution system includes the brake caliper, brake pads, and brake disc.

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EvelynLynn

08/15/25 11:24pm

I was really startled when my car automatically braked last time. The main reason might be the vehicle's automatic safety system kicking in, like when radars or cameras detect an obstacle ahead and intervene urgently. If your car is equipped with automatic braking, it frequently scans the road at high speeds, and if it senses a potential collision—like with a pedestrian or another car—the system immediately brakes for you. However, it could also be due to dirty or faulty sensors. In my case, it was during heavy rain, and the front camera got covered by water, causing a false activation. Another possibility is a software glitch, which might require an update at the dealership. Remember, while this feature can be lifesaving, frequent false activations are annoying, so it's best to regularly clean the sensors and check them before driving.

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Miguel

10/18/25 3:22am

I think automatic braking mostly stems from vehicle electronic failures. I often see this situation when repairing cars. If the radar or ultrasonic sensor malfunctions, it may falsely detect collision risks and trigger braking; sometimes it's a software bug, like failed system updates causing erroneous operations. Also, short circuits or blown fuses can trigger it, especially in older cars that are prone to vibration-related issues. I recommend first using diagnostic tools to check for error codes, then simply cleaning the sensor area. If it's accidentally triggered, try slowly pulling over and turning off the automatic function. This can avoid unexpected scares - safety comes first.

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Is the new small sedan exempt from inspection for six years?

New small sedans are exempt from inspection for six years. Additional information is as follows: 1. Small sedans are exempt from inspection for the first six years: This means that within six years, there is no need for an on-site inspection. This policy only applies to private passenger vehicles with 5 seats or fewer. 2. Collect the annual inspection sticker every two years during the exemption period: Every two years, the vehicle owner must personally go to the vehicle management office to collect the annual inspection sticker. Bring your ID card, vehicle registration certificate, and valid compulsory traffic insurance policy to apply for a new annual inspection sticker. Starting from the seventh year, an annual on-site inspection is required, and the annual inspection sticker must be collected every year. 3. Scope of vehicles "exempt from inspection for six years": 1. The scope of exempt vehicles includes non-commercial sedans (including large sedans) registered within six years, other small and mini passenger vehicles, and motorcycles. 2. Excluded are vans and vehicles with more than 9 seats (>9 seats).

Is the Driving Resistance Greater or Smaller on Downhill Sections?

Driving resistance on downhill sections is smaller compared to flat sections. On downhill sections, due to the effect of gravity, the driving resistance is reduced, making it easier for the vehicle to speed up and harder to control compared to driving on flat terrain. Increased driving resistance manifests as insufficient power during driving, a mismatch between speed and gear, increased fuel consumption, and poorer coasting performance when the vehicle is in neutral on straight roads. Reasons for increased driving resistance include: 1. Faults in the vehicle's transmission system: Poor lubrication, insufficient, deteriorated, or overly viscous lubricants in the drive axle's main reducer, differential, or transmission can increase driving resistance; improper assembly or adjustment of the drive axle's main reducer and transmission, overly tight bearing assembly, improper driveshaft assembly, overly tight or poorly lubricated universal joint bearings, or lack of oil; excessively small gear meshing clearance in the transmission increases transmission resistance, deformation of the drive axle housing, bending deformation of the half-shaft, and friction between the half-shaft and the half-shaft sleeve can all contribute to increased driving resistance. 2. Faults in the vehicle's driving system: Deformation or displacement of the front axle or drive axle can increase driving resistance; poor lubrication, deteriorated or insufficient lubricants in the wheel hub bearings, insufficient tire pressure, and deformation of the vehicle frame can all lead to increased driving resistance. 3. Overloading the vehicle, poor road conditions, and driving against the wind can also cause increased driving resistance.

What does ST on tires stand for?

Tire ST refers to trailer tires. Additional information: 1. Trailer tires do not refer to truck trailers, but rather to the practice in European and American countries where private cars often tow an additional vehicle for transporting goods or travel purposes. The ST designation before the tire indicates this type of tire. ST can be considered as an abbreviation for sport-trailer. 2. Pneumatic tires can be further divided into two types based on their construction: tube tires and tubeless tires. Passenger cars commonly use tubeless tires. Based on the arrangement of internal cord layers and cushion layers, tires can also be classified as radial tires or bias-ply tires. Radial tires are widely used in automobiles. 3. Automotive tires can be categorized into pneumatic tires and solid tires based on their carcass structure. Modern vehicles predominantly use pneumatic tires. According to internal air pressure levels, pneumatic tires can be divided into three types: high-pressure tires, low-pressure tires, and ultra-low-pressure tires. Low-pressure tires are commonly used in various vehicles. Pneumatic tires can also be classified into tube tires and tubeless tires based on their construction.

How to Handle 6 Points Deducted from Driver's License?

If 6 points are deducted from your driver's license, the handling methods are as follows: 1. Offline: If the ticket or penalty decision is issued by the traffic police on the spot, you can directly pay the fine at the designated bank specified on the penalty notice. Note: Be sure to handle the violation within the specified time, usually within fifteen days after receiving the notice, otherwise late fees may apply. 2. Online: Log in to the comprehensive traffic safety service management platform, select the traffic violation handling service, and pay the fine. Note: If a driver finds a record of traffic violations, it should be handled promptly. Otherwise, if multiple violations are not handled in time, the traffic department may legally revoke the license or impound the vehicle.

What Are the Types of Automotive Batteries?

Nowadays, automotive starting batteries generally include the following types: Dry-charged Lead-Acid Battery: This type is called a dry battery because it is completely dry without electrolyte when it leaves the factory. Since it requires the addition of electrolyte for use, it is commonly known as a water battery. Its advantage is that the negative plate has a high capacity for storing electricity, and it can retain the stored charge for up to two years in a completely dry state, making it very convenient for storage and transportation. To use it, you only need to add electrolyte and wait for 20-30 minutes before it is ready. It is also relatively cheaper. The downside is that it requires regular maintenance and the addition of electrolyte, which can be quite troublesome for the average consumer. Currently, it is mainly used in trucks and buses. Valve-Regulated Sealed Lead-Acid Battery: Also known as a maintenance-free battery. As the name suggests, this battery does not require any liquid maintenance from the time it leaves the factory until it is scrapped. The advantages are obvious: first, it is maintenance-free; second, it is resistant to vibration, high temperatures, compact in size, and has low self-discharge. It generally also has a longer lifespan. The drawback is that it is relatively more expensive. Currently, almost all passenger cars use this type of battery. With the price gap of maintenance-free batteries narrowing in recent years, more and more buses and trucks are also starting to use maintenance-free batteries. Lithium-Ion Battery: The advantages of lithium batteries are their small size and light weight. The disadvantages are their high cost and relatively lower safety. Due to these characteristics, they are mainly used in high-performance cars and sports cars.

What does it feel like when the car's ABS intervenes?

When the ABS intervenes during braking, there will be a rattling sound and a sense of jerkiness. Here are some related details about ABS: 1. Function: The Anti-lock Braking System (ABS) automatically controls the braking force during car braking to prevent the wheels from locking up, keeping them in a state of rolling and sliding (with a slip ratio of about 20%) to ensure maximum adhesion between the wheels and the road. 2. Working Principle: During braking, ABS quickly determines the locking state of each wheel based on the speed signals from the wheel speed sensors. It closes the normally open input solenoid valve for the wheel that is starting to lock, maintaining the braking force. If the wheel continues to lock, it opens the normally closed output solenoid valve, 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.

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