Experiencing noises from your car frequently is never reassuring, so discovering noises on your Mercedes Benz CLS Class suspensions when you go over a speed bump can be worrying. This warning sign may be a sign of a insignificant trouble 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 correct the trouble, it is with this aim 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 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 Benz CLS Class
Check Mercedes Benz CLS Class suspension
If you experience a suspension noise when you pass a speed bump on your Mercedes Benz CLS Class, and it is characterized by a “clack” or cracking, it is highly plausible that your suspension block is the cause of it. In fact, it may be the suspension cups, which, when they are outdated, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its function during small bumps that compress the suspensions. To verify if this is the trouble that worries you, take a dented road and pay attention to the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of swapping them fairly quickly or you may ruin other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have searched for “Mercedes Benz CLS Class 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 old and the dirt/dust amasses inside them their working is deteriorated and it is possible to experience a noise 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 situations you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Mercedes Benz CLS Class, don’t hesitate to refer to this document.
Check steering hinges/stabilizer bar
Finally, when you recognise a suspension noise when your Mercedes Benz CLS Class passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Just like the gimbals, the steering part is mobilized when you adjust direction. If this is the situation, the parts that may have been destroyed by normal wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the causes of your noises, to verify it, place it under the car and apply twists on each of its components to verify that there is no special play on one of them, they are supposed to endure you quite strongly over their entire travel. Please remember to take your Mercedes Benz CLS Class to your auto technician or swap them if they are involved.
squeaky noise speed bump Mercedes Benz CLS Class
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you go over a speed bump with your Mercedes Benz CLS Class, it is plausible that it is the stabilizer bar itself that is concerned. In fact, abnormal/pronounced wear of the latter can cause irregular friction which can generate this squeaking noise. Keep in mind to verify by going under your car the condition of the paint on your bar which will indicate if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dried out and cause noise, in which case remove them from the cradle and grease them, this should eliminate the trouble.
Check engine silentblocks
Finally, last case 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 car, a pronounced weakness of these will generate 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 Benz CLS Class. To swap them go to your auto technician.
Other speed bump noise Mercedes Benz CLS Class
If, even though all its assumptions, you still can’t find the origin of the noise your Mercedes Benz CLS Class makes when you pass a speed bump, we advise you to refer to this content on a loud noise on Mercedes Benz CLS Class or to visit your auto technician in order to carry an in-depth check on your Mercedes Benz CLS Class and discover this trouble.
