The left front door speaker of the new car has poor contact and there is no sound intermittently. What should I do if I go to the service station and say it's not broken and I don't completely change it? If you go to this service station to check, see if you can try out the problem at that time. If you can try out the problem at that time, it means that there is something wrong with him and he must replace it for you. If he refuses to claim, you can complain to him. Call the manufacturer's complaint number directly. If there is no problem when you go to check, you must wait for his problem to appear before you can claim. Because when you claim, you have to take a video to prove that the speaker is really damaged before you can claim. If it was good at that time and there was no problem, you don't have to claim. You can also record videos when problems occur. As long as you can prove that the speaker is indeed in poor contact and there is no indirect sound, you can prove that it must be replaced if it is not replaced.