Experiencing noises from your vehicle often is never reassuring, so hearing noises on your Mercedes Sprinter suspensions when you pass a speed bump can be stressing. This sign may be a sign of a minor trouble as well as a warning of a much larger repair to come. In any case, it is necessary to check the origin and take the necessary actions to solve 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 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 Sprinter
Check Mercedes Sprinter suspension
If you notice a suspension noise when you pass a speed bump on your Mercedes Sprinter, 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 Indeed, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its function during small bumps that compress the suspensions. To check if this is the trouble that worries you, take a dented road and listen to the noise coming from your front axle as you go over holes. If it is indeed the cups, think of replacing them fairly quickly or you may affect other parts and have to make more important maintenance.
Check the cardan shaft
If you are here because you have searched for “Mercedes Sprinter 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 Indeed, when the cardan bellows get outdated and the dirt/dust amasses inside them their action is degraded and it is possible to experience a noise when they are in torsion.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 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 Sprinter, don’t hesitate to read this article.
Check steering hinges/stabilizer bar
Finally, when you recognise a suspension noise when your Mercedes Sprinter passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Exactly like the gimbals, the steering part is mobilized when you adjust direction. If this is your situation, the components that may have been affected 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 check it, put it under the car and apply twists on each of its components to check that there is no special play on one of them, they are expected to endure you quite strongly over their entire travel. Keep in mind to take your vehicle to your technician or change them if they are involved.
squeaky noise speed bump Mercedes Sprinter
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 Sprinter, it is possible that it is the stabilizer bar itself that is concerned. Indeed, abnormal/pronounced wear of the latter can cause uncommon friction which can provoke this squeaking noise. Remember to check by passing under your car the condition of the paint on your bar which will reveal if there is friction. Second possible explanation, it may be your stabilizer bar silentblocks that are dry and provoke noise, in which case remove them from the cradle and grease them, this should resolve the trouble.
Check engine silentblocks
Finally, last possibility that we can check together, it is the engine silentblocks, actually, these silentblocks operate as pads/shock absorbers between the engine and the cradle of the vehicle, a pronounced weakness of these will make a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise appears when you pass a speed bumps or any holes with your Mercedes Sprinter. To change them go to your auto mechanic.
Other speed bump noise Mercedes Sprinter
If, even though all its assumptions, you still can’t find the source of the noise your Mercedes Sprinter makes when you pass a speed bump, we suggest you to refer to this article on a loud noise on Mercedes Sprinter or to visit your technician in order to carry an in-depth check on your Mercedes Sprinter and find this trouble.
