The abnormal sound of the second row of seats was checked and found that it should be a common problem. Emergency treatment methods are attached.
VeronicaMarlowe 
10 When the car was about 80,000 kilometers, abnormal noises were found in the rear seats.
The symptom of abnormal sound is that when crossing a bumpy road, there will be a “thud” sound similar to a metal collision behind.
But one situation is that when adults sit in the back row, sometimes the abnormal sound disappears.
Initially, it was suspected that the seat bracket had a loose screw. I checked it myself and found that there were no loose parts in the bracket.
I originally thought that in order to avoid various demolitions, I would leave it alone.
However, it was recently discovered that many riders reported abnormal noises in the back row, and the symptoms also had common characteristics, so a new round of investigation was started.
Ask an adult to sit in the back row and make 6/4 ratio sides respectively. It is found that the abnormal sound comes from the 6 side and disappears when it is close to the backrest.
So I started work and hammered the backrest with my fist. I could hear the abnormal sound and found that it was the sound coming from the backrest angle adjustment device in the picture below.
The symptom of abnormal sound is that when crossing a bumpy road, there will be a “thud” sound similar to a metal collision behind.
But one situation is that when adults sit in the back row, sometimes the abnormal sound disappears.
Initially, it was suspected that the seat bracket had a loose screw. I checked it myself and found that there were no loose parts in the bracket.
I originally thought that in order to avoid various demolitions, I would leave it alone.
However, it was recently discovered that many riders reported abnormal noises in the back row, and the symptoms also had common characteristics, so a new round of investigation was started.
Ask an adult to sit in the back row and make 6/4 ratio sides respectively. It is found that the abnormal sound comes from the 6 side and disappears when it is close to the backrest.
So I started work and hammered the backrest with my fist. I could hear the abnormal sound and found that it was the sound coming from the backrest angle adjustment device in the picture below.
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