Listening noises from your auto regularly is never reassuring, so hearing noises on your Lexus ES suspensions when you pass a speed bump can be worrying. This 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 important to check the origin and take the necessary actions to resolve the problem, it is with this goal in mind that we wanted to write this document to help you see more clearly. We will first see the possible causes 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 Lexus ES
Check Lexus ES suspension
If you experience a suspension noise when you pass a speed bump on your Lexus ES, 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 Indeed, it may be the suspension cups, which, when they are out of date, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its role during small bumps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 replacing them fairly quickly or you may affect other parts and have to make more important repairs.
Check the cardan shaft
If you are here because you have looked for for “Lexus ES 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 Indeed, when the cardan bellows get out of date and the dirt/dust builds up inside them their working is degraded and it is possible to experience a sound when they are in torsion.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 situations you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Lexus ES, don’t hesitate to check out this document.
Check steering hinges/stabilizer bar
Finally, when you experience a suspension noise when your Lexus ES 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 change direction. If this is your situation, the parts that may have been affected by usual 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 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 resist you quite strongly over their entire travel. Remember to take your vehicle to your technician or replace them if they are involved.
squeaky noise speed bump Lexus ES
Check the stabilizer bar
If, alternatively, you have a noise that is more like a squeak when you pass a speed bump with your Lexus ES, it is possible that it is the stabilizer bar itself that is involved. Indeed, abnormal/pronounced wear of the latter can cause unusual friction which can generate this squeaking noise. Please remember to check by passing under your automobile the condition of the paint on your bar which will show if there is friction. Second possible 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 solve the problem.
Check engine silentblocks
Finally, last case that we can check together, it is the engine silentblocks, in fact, these silentblocks work as pads/shock absorbers between the engine and the cradle of the auto, a pronounced fatigue of these will create 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 Lexus ES. To replace them go to your auto mechanic.
Other speed bump noise Lexus ES
If, despite all its assumptions, you still can’t uncover the source of the noise your Lexus ES makes when you pass a speed bump, we encourage you to refer to this article on a loud noise on Lexus ES or to visit your technician in order to carry an in-depth check on your Lexus ES and find this problem.
