Discovering noises from your car often is never comforting, so hearing noises on your Mercedes Benz GLS Class suspensions when you go over a speed bump can be disturbing. This warning sign may be a sign of a small issue as well as a warning of a much larger repair to come. Whatever the case, it is important to check the source and take the necessary actions to correct the issue, it is with this goal in mind that we wanted to write this content to support you see more clearly. We will first see the possible explanations for a crack when the speed bump passes, after that, 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 GLS Class
Check Mercedes Benz GLS Class suspension
If you experience a suspension noise when you pass a speed bump on your Mercedes Benz GLS Class, and it is characterized 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 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 function during small bumps that compress the suspensions. To check if this is the issue that worries you, take a dented road and focus on the noise coming from your front axle as you drive over holes. If it is indeed the cups, think of changing 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 looked for for “Mercedes Benz GLS 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 Indeed, when the cardan bellows get outdated and the dirt/dust amasses inside them their working is degraded and it is possible to experience a sound when they are in torsion.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 circumstances you should consider replacing it or them. If you have the feeling that this noise is more like a a loud noise on Mercedes Benz GLS Class, don’t hesitate to visit this article.
Check steering hinges/stabilizer bar
Finally, when you know a suspension noise when your Mercedes Benz GLS Class 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 change direction. If this is the case, the components that may have been damaged by regular wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the causes of your noises, to check it, put it under the car and apply twists on each of its elements to check that there is no special play on one of them, they are supposed to resist you quite strongly over their entire travel. Keep in mind to take your vehicle to your mechanic or swap them if they are involved.
squeaky noise speed bump Mercedes Benz GLS Class
Check the stabilizer bar
If, however, you have a noise that is more like a squeak when you go over a speed bump with your Mercedes Benz GLS Class, 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 check by passing under your car the condition of the paint on your bar which will tell us if there is friction. Second possible 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 resolve the issue.
Check engine silentblocks
Finally, last point that we can check together, it is the engine silentblocks, in fact, these silentblocks function as pads/shock absorbers between the engine and the cradle of the car, a noticable fatigue of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may appear that a squeaking noise occurs when you pass a speed bumps or any holes with your Mercedes Benz GLS Class. To replace them go to your auto mechanic.
Other speed bump noise Mercedes Benz GLS Class
If, despite all its assumptions, you still can’t find the origin of the noise your Mercedes Benz GLS Class makes when you pass a speed bump, we advise you to refer to this article on a loud noise on Mercedes Benz GLS Class or to visit your mechanic in order to carry an in-depth check on your Mercedes Benz GLS Class and determine this issue.
