Discovering noises from your auto often is never reassuring, so hearing noises on your smart fortwo suspensions when you pass a speed bump can be worrying. This warning sign may be a sign of a minor problem as well as a warning of a much larger repair to come. Whatever the case, it is essential to check the cause and take the necessary actions to correct the problem, it is with this intention in mind that we wanted to write this content to help 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 smart fortwo
Check smart fortwo suspension
If you encounter a suspension noise when you pass a speed bump on your smart fortwo, and it is categorized 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 In fact, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps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 examine if this is the problem that concerns you, take a dented road and focus on the noise coming from your front axle as you circulate over holes. If it is indeed the cups, think of swapping them quickly or you may ruin other parts and have to make more important vehicle repairs.
Check the cardan shaft
If you are here because you have searched for “smart fortwo 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 In fact, when the cardan bellows get out of date and the dirt/dust accumulates inside them their working is deteriorated and it is possible to experience a sound when they are in torsion. To examine 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 circumstances you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on smart fortwo, don’t hesitate to refer to this content.
Check steering hinges/stabilizer bar
Finally, when you experience a suspension noise when your smart fortwo 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 vary direction. If this is the case, 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 causes of your noises, to examine it, put it under the car and apply twists on each of its components to examine that there is no particular play on one of them, they are meant to endure you quite strongly over their entire travel. Remember to take your smart fortwo to your technician or change them if they are involved.
squeaky noise speed bump smart fortwo
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your smart fortwo, it is plausible that it is the stabilizer bar itself that is involved. In fact, abnormal/pronounced wear of the latter can cause abnormal friction which can cause this squeaking noise. Keep in mind to examine by going under your car the condition of the paint on your bar which will show if there is friction. Second plausible point, 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 solve the problem.
Check engine silentblocks
Finally, last possibility that we can examine together, it is the engine silentblocks, in fact, these silentblocks process as pads/shock absorbers between the engine and the cradle of the auto, a obvious 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 smart fortwo. To change them go to your auto technician.
Other speed bump noise smart fortwo
If, even though all its assumptions, you still can’t find the source of the noise your smart fortwo makes when you pass a speed bump, we advise you to refer to this article on a loud noise on smart fortwo or to visit your technician in order to carry an in-depth check on your smart fortwo and identify this problem.
