Experiencing noises from your vehicle often is never reassuring, so hearing noises on your Mercedes Classe Cls suspensions when you pass a speed bump can be disturbing. This symptom may be a sign of a small problem as well as a warning of a much larger repair to come. Whatever the case, it is fundamental to check the source and take the necessary actions to resolve the problem, it is with this goal in mind that we wanted to write this document to support you see more clearly. We will first see the possible reasons for a crack when the speed bump passes, then, what can be the cause 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 Cls
Check Mercedes Classe Cls suspension
If you experience a suspension noise when you pass a speed bump on your Mercedes Classe Cls, and it is categorized by a “clack” or cracking, it is highly possible that your suspension block is the origin of it. Indeed, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps that compress the suspensions. To verify if this is the problem that concerns you, take a dented road and listen to the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of replacing them fairly quickly or you may damage other parts and have to make more important auto repairs.
Check the cardan shaft
If you are here because you have looked for for “Mercedes Classe Cls suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. Indeed, when the cardan bellows get out of date and the dirt/dust builds up inside them their action is degraded and it is possible to experience a sound when they are in torsion. To verify 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 make a turn at low speed. If it cracks in these two conditions you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Mercedes Classe Cls, don’t hesitate to check out this content.
Check steering hinges/stabilizer bar
Finally, when you recognise a suspension noise when your Mercedes Classe Cls passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you change direction. If this is your situation, the components that may have been broken 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 verify it, position it under the automobile and apply twists on each of its elements to verify that there is no special play on one of them, they are meant to resist you quite strongly over their entire travel. Keep in mind to take your vehicle to your auto mechanic or swap them if they are involved.
squeaky noise speed bump Mercedes Classe Cls
Check the stabilizer bar
If, on the other hand, you have a noise that is more like a squeak when you pass a speed bump with your Mercedes Classe Cls, it is possible that it is the stabilizer bar itself that is concerned. Indeed, abnormal/pronounced wear of the latter can cause abnormal friction which can cause this squeaking noise. Keep in mind to verify by going under your automobile the condition of the paint on your bar which will reveal if there is friction. Second possible point, it may be your stabilizer bar silentblocks that are dried out and bring on noise, in which case take them off from the cradle and grease them, this should eliminate the problem.
Check engine silentblocks
Finally, last point that we can verify together, it is the engine silentblocks, in fact, these silentblocks act as pads/shock absorbers between the engine and the cradle of the vehicle, a noticable fatigue of these will make a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise shows up when you pass a speed bumps or any holes with your Mercedes Classe Cls. To change them go to your auto mechanic.
Other speed bump noise Mercedes Classe Cls
If, despite all its assumptions, you still can’t locate the source of the noise your Mercedes Classe Cls makes when you pass a speed bump, we suggest you to consult this content on a loud noise on Mercedes Classe Cls or to visit your auto mechanic in order to carry an in-depth check on your Mercedes Classe Cls and identify this problem.
