Discovering noises from your car often is never comforting, so discovering noises on your Mercedes C class suspensions when you pass a speed bump can be stressing. This sign may be a sign of a minor problem as well as a warning of a much larger repair to come. In any case, it is necessary to check the cause and take the necessary actions to solve the problem, it is with this goal in mind that we wanted to write this content to help 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 C class
Check Mercedes C class suspension
If you encounter a suspension noise when you pass a speed bump on your Mercedes C class, and it is characterized by a “clack” or cracking, it is highly plausible that your suspension block is the origin of it. Indeed, it may be the suspension cups, which, when they are old, 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 check if this is the problem that worries 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 swapping them as soon as possible 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 C class 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 Indeed, when the cardan bellows get out of date and the dirt/dust builds up inside them their action is deteriorated and it is possible to experience a sound when they are in torsion. To check 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 situations you should consider replacing it or them. If you have the feeling that this noise is more like a a loud noise on Mercedes C class, don’t hesitate to consult this document.
Check steering hinges/stabilizer bar
Finally, when you recognise a suspension noise when your Mercedes C class passes over a speed bumps, it is possible that the hinges or the stabilizer bar are responsible. Exactly like the gimbals, the steering part is mobilized when you vary direction. If this is the situation, the parts that may have been broken by regular wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the origins of your noises, to check it, place it under the automobile and apply twists on each of its components to check that there is no particular play on one of them, they are expected to endure you quite strongly over their entire travel. Remember to take your Mercedes C class to your auto technician or change them if they are involved.
squeaky noise speed bump Mercedes C class
Check the stabilizer bar
If, however, you have a noise that is more like a squeak when you pass a speed bump with your Mercedes C class, it is plausible that it is the stabilizer bar itself that is concerned. Indeed, abnormal/pronounced wear of the latter can cause irregular friction which can cause this squeaking noise. Keep in mind to check by passing under your automobile the condition of the paint on your bar which will reveal if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dry and bring on noise, in which case disassemble them from the cradle and grease them, this should eliminate the problem.
Check engine silentblocks
Finally, last point that we can check together, it is the engine silentblocks, in fact, these silentblocks process as pads/shock absorbers between the engine and the cradle of the car, a evident fatigue of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise happens when you pass a speed bumps or any holes with your Mercedes C class. To change them go to your technician.
Other speed bump noise Mercedes C class
If, despite all its assumptions, you still can’t locate the source of the noise your Mercedes C class makes when you pass a speed bump, we recommend you to consult this article on a loud noise on Mercedes C class or to visit your auto technician in order to carry an in-depth check on your Mercedes C class and determine this problem.