Experiencing noises from your car regularly is never comforting, so hearing noises on your Mercedes Classe A suspensions when you pass a speed bump can be stressing. This sign may be a sign of a insignificant issue as well as a warning of a much larger repair to come. In any case, it is essential to check the source and take the necessary actions to eliminate the issue, it is with this objective in mind that we wanted to write this article to support you see more clearly. We will first see the possible explanations for a crack when the speed bump passes, then, what can be the reason of a squeaking noise when a speed bump is being passed and finally what to do if you have another noise when a speed bump is passed.
Suspension cracking noise Mercedes Classe A
Check Mercedes Classe A suspension
If you experience a suspension noise when you pass a speed bump on your Mercedes Classe A, and it is categorized by a “clack” or cracking, it is highly plausible that your suspension block is the origin of it. In fact, it may be the suspension cups, which, when they are dead, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its role during small bumps that compress the suspensions. To examine if this is the issue that concerns you, take a dented road and listen to the noise coming from your front axle as you circulate over holes. If it is indeed the cups, think of changing them quickly or you may affect other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have searched for “Mercedes Classe A suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. In fact, when the cardan bellows get out of date and the dirt/dust accumulates inside them their action is deteriorated and it is possible to experience a sound when they are in torsion. To examine this, you can try both types of torsion, first vertical with suspension compressions on the speed bump passages, and horizontal when you are going to turn at low speed. If it cracks in these two cases you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Mercedes Classe A, don’t hesitate to consult this document.
Check steering hinges/stabilizer bar
Finally, when you detect a suspension noise when your Mercedes Classe A passes over a speed bumps, it is plausible that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you modify direction. If this is the case, the components that may have been damaged by normal wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the origins of your noises, to examine it, put it under the automobile and apply twists on each of its elements to examine that there is no special play on one of them, they are supposed to endure you quite strongly over their entire travel. Remember to take your vehicle to your mechanic or change them if they are involved.
squeaky noise speed bump Mercedes Classe A
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your Mercedes Classe A, it is plausible that it is the stabilizer bar itself that is concerned. In fact, abnormal/pronounced wear of the latter can cause unusual friction which can cause this squeaking noise. Remember to examine by passing under your automobile the condition of the paint on your bar which will show if there is friction. Second plausible explanation, it may be your stabilizer bar silentblocks that are dry and cause noise, in which case disassemble them from the cradle and grease them, this should fix the issue.
Check engine silentblocks
Finally, last case that we can examine together, it is the engine silentblocks, in fact, these silentblocks work as pads/shock absorbers between the engine and the cradle of the car, a obvious weakness of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may appear that a squeaking noise comes up when you pass a speed bumps or any holes with your Mercedes Classe A. To change them go to your technician.
Other speed bump noise Mercedes Classe A
If, despite all its assumptions, you still can’t uncover the origin of the noise your Mercedes Classe A makes when you pass a speed bump, we encourage you to refer to this article on a loud noise on Mercedes Classe A or to visit your mechanic in order to carry an in-depth check on your Mercedes Classe A and find this issue.
