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What are your biggest concerns when buying a car? Is it configuration or security? I believe that for many car owners, the most concerned is probably the safety of the car. Recently, a car owner in Hangzhou reported to the media that the purchased BMW 5 Series suddenly popped out during normal driving, which frightened their family.
According to the "1818 GoldenEye" report, Mr. Chen was driving a BMW 525, which was only picked up in September this year, and on November 17, Mr. Chen's family was preparing to get on the highway and had an accident when passing through the Xiasha Bridge in Hangzhou. Mr. Chen said that the air curtain of the car on the road suddenly exploded, the explosion of the vehicle's air bag was relatively loud, and the children in the car were scared to cry.
Then Mr. Chen drove the vehicle to a safe position to get out of the car to check and found that there was no collision between the front and back of the car. Judging from the video taken on the day of the accident, the safety curtains on the sides of the four doors in front of the front and rear of the front and vice driver's seats of the vehicle all popped out, fortunately, there was no major obstacle.
Mr. Chen was very confused about the sudden explosion of all the air bags in the car, so he contacted the 4S shop for processing. At present, Mr. Chen has received an accident handling slip issued by the 4S store, which shows that according to the driving recorder video and vehicle diagnostic data analysis, the airbag computer triggered the right airbag, the air curtain on both sides and the seat belt tensioner after recognizing the collision signal on the right side of the vehicle. Through the video analysis of the dashcam, there is a flat tire on the right side of the vehicle, and the shock wave smoke generated by the tire burst can be seen in the right front area of the vehicle, and the powerful shock wave causes the airbag computer to detect the collision signal on the right side, which triggers the relevant airbag and seat belt tensioner. After professional monitoring, no relevant technical fault information was found in the passive safety system of the vehicle.
Zheng Zheng, manager of the after-sales department of Hangzhou Baoyi BMW 4S store, said that through some technical means, the reason for the airbag popping was finally determined to be due to a puncture in the truck on the right side of the vehicle. However, mr. Chen did not agree with the after-sales manager's statement.
Mr. Chen believes that the smoke said by the 4S shop may also be generated when the air curtain pops out, and it cannot be judged that the smoke mentioned in the report is caused by the puncture of the vehicle next to it, and Mr. Chen proposed that he could call the truck driver to ask whether the puncture occurred on the same day.
In addition, Mr. Chen pointed out that it is suspected that the car picked up from the 4S shop on August 31 has serious quality problems and safety hazards, so if there is a problem in the quality of the car that causes the air curtain to pop out and requires the 4S shop to recall the vehicle, Manager Zheng said that if Mr. Chen has doubts about the results of the investigation, he can apply to a third-party testing agency for monitoring, and the quality doubts raised by Mr. Chen will also actively feedback with the manufacturer, if there is a problem as Mr. Chen said, he will be responsible for the end, but about this batch of cars, So far, the 4S store has not received feedback from other car owners about similar situations.
In response to Mr. Chen's situation, many netizens believe that it may be the reason for the truck that caused the air curtain to pop out, because "the big truck shook down, the double flash hit, and then pulled over."
Whether the airbag pops out and whether the airbag sensor is touched at the time of collision is necessarily related. Previously, we have reported many times that after the passenger car was seriously collided, the airbag did not pop out, and the explanation given by most 4S shops was "no hit point", and it was not impossible for netizens to guess that the air curtain popped due to the flat tire of the truck. In August this year, a Tesla Model 3 was passing a traffic light in Yuanzhou District, Yichun City, when the vehicle's five airbags suddenly popped out. According to the "Certificate" issued by the police, it can be seen that the owner of the Tesla car exploded when passing through the traffic light at the intersection of Yishang Avenue and Chunhui Road, and all the air bags popped out. After the explosion, the owner said he saw a van parked in front of him on the right. Subsequently, the police retrieved the surveillance video and contacted the owner of the truck. According to the truck driver's description, he heard an explosion when he passed the intersection, then parked the car on the right side of the road, found that there was a crossing in the right rear wheel of the truck, and the next day he changed the tire.
It is understood that the working principle of the airbag is that the sensor feels the intensity of the car crash and transmits it to the controller, the controller receives and processes the signal of the sensor, when the controller judges that it is necessary to open the airbag, the ignition signal is immediately issued to trigger the gas generator, the gas generator ignites quickly after the ignition of a large amount of gas, between the driver and the internal structure of the car to expand a gas-filled airbag, so that the driver's body does not violently collide with the hard car structure, thereby reducing injury.