Is C class abnormal noise a common problem, and is it true that domestic C level abnormal noise has

It may be that the chassis parts are damaged

There are many, all of which can be solved.

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Here's how to fix it:

Step one, rule out which door it is. If you are not sure whether it is the front door or the rear door, find a rough road to ensure that there is a sound at low speeds, in the direction of fastening the seat belt and confirming the safety of driving, slowly open the driver's door and continue to drive, if it still rings, it proves that it is the back door, so that the friend sitting in the back also confirms that the door is ringing.

Step 2: Eliminate whether the sealing rubber rings or the door lock rings. I cut the newspaper into 10 centimeter-wide strips, separated the contact surface between the sealing strip and the car door in sections, closed the door tightly and drove the test, if the abnormal noise disappears, it means that the sealing rubber rubbing sound, and if there is a sound, the sealing rubber is excluded. Basically, cars within 3 years old have abnormal seals.

Step 3: Eliminate the door lock ringing. Find insulating black tape to wrap the lock post of the door lock with black tape, close the door tightly and drive, and the abnormal noise disappears to prove that the door lock hook and the lock post friction produces abnormal noise, my car is this problem.

Step 4: Problem solving.

1. If the door lock rings, you can use colorless transparent glue to wrap the lock post in a layer, and at the same time lubricate the door lock with lubricating oil that is not harmful to the rubber, which may become a regular homework, because the transparent glue will break and the lubricating oil will dry after a long time.

2. If it is a problem with sealing rubber, you can find a bottle in **; Sealing tape maintenance wax, the entire door and door frame sealing strip is wiped over, and the effect really works. The packaging is good, and I have seen the technician in the 4S store also use it. The new car can also prevent the rubber hardening of the sealing strip and restore the toughness of the sealing strip.

3. The trunk door can also be solved by the above methods.

4. If none of the above methods can be ruled out, it means that the interior material is rubbing, and you can regularly use spray lubricant to spray a little in the gap between the interior material links.