If you detect a noise on your car, you are right to get worried about that and take it seriously, although it is possible that nothing major will result from it, it is also imaginable that it is the first signal of a more significant repair. A noise that appears on a door of your Mercedes A class fortunately suggests a slight correction / repair, rather than a complicated repair. In order to support you in your approach, we have decided to compose this article to provide you the most likely solutions to your issue. Primary, we will look at the different source noises of air in the door of your Mercedes A class, then hinge noises and finally at other possible possibilities.door-noise-mercedes-a-class

Door air noise Mercedes A class

Plastic air cache noise

If you experience air noise on the doors of your Mercedes A class, it is possible that it is linked to some plastic covers on the interior sides of your door. These can come loose, hole, fall and thus develop an air intake that will obviously make a distinctive and disagreeable air noise in the passenger compartment. To ensure that you don’t have this trouble on your Mercedes A class, open your doors and check the sides of them carefully, see if all the covers are properly positioned.

Air noise seal

Air noise at the doors of your Mercedes A class can also be related to a gasketfailing or overused. In fact, the door seal, in addition to have a protective role against moisture infiltration, also has a protective function for air inlets in the passenger compartment. When it is worn, it will not settle and therefore no longer create a perfect seal between the door and the car body. To check its condition, there are two solutions, first, visually check the state of the seal and for the second test, install someone inside the passenger compartment and door by door, car closed, sprayed with water the seals to see if water gets into. If you are in this case, go to your auto technician to have your seal changed and the door noise on your Mercedes A class adjusted.

Hinge noise door hinge Mercedes A class

Door noise Mercedes A class, dry hinge

It is also possible, depending on the kind of of noise you know, that your hinge is at the origin of them. If this is the case, you will have to check it by opening your door and checking that the door noise on your Mercedes A class comes from a hinge that is too dry. To solve this issue, first try to grease the hinge, in most cases this is sufficient to fix your trouble.

Noise porte Mercedes A class, worn hinge

If you have followed our primary advice referring to your hinge, but the trouble still persists, it is possible that your hinge is worn out and needs a swap. In this case, check that despite the lubrication it still generates a lot of noise when opening and closing. You should feel a “clack” and restraint in the movement. If this Mercedes A class noise is your problem, change your hinge.

Other possibilities

Internal part of the damaged window regulator

In the other possibilities that can cause door noise on Mercedes A class, we can first think of the window lift, actually, after the hinge, it is the second advanced system of the door. If broken, it can create vibration or even air noise. To check its condition, remove the door trim and check that no parts are broken.

unscrewed speaker

Finally, one of the last possible scenarios for Mercedes A class door noise would come from a from your vehicle’s speakers. Indeed, they take place in the door and can, over time, loosen and generate a distinctive vibration and risk damaging themselves if you do not attach them again. Same method, you will have to dismantle the door trim to check its correct positioning.
If you can’t find solutions among this article, don’t hesitate to take your vehicle to your auto technician who can test your car in more detail to discover what the particular trouble is that you know.