Do you experience a metallic noise on your smart fortwo when you drive? We can understand that this is not pleasant and that you are wandering. Experiencing such a noise is not always a good indication, but it may also be nothing severe. To support you resolve this problem, we have decided to compose this content page to help you in this search. In order to perform this research as efficiently as possible, we will first check out the plausible sources of metallic noise in the front of your vehicle, and then, if the metallic noise comes from the rear of your vehicle.
Metal noise smart fortwo coming from the front end of the vehicle
I perceive a metal rattling noise coming from wheels
- Metallic noise coming from your bearing
- Metalic noise coming from brake
- Stabilizer bar worn
One of the possible causes of metal noise manifestations on your smart fortwo, may be that one of your bearing is tired, it will commonly make a loud noise that raises when stressed (turns faster and faster). So bear in mind to verify by taking speed (neutral gear and window open to be aware only to noise of the wheels) that the noise is well established here, if this is the case swap it or them quickly. If, on the other hand, this noise only manifests itself with an engaged speed, examine this guide on loud noise on smart fortwo, you will most likely find a remedy to your problem.
If you discern a metalic noise on smart fortwo and you have the feeling that it comes from your front wheels, it is highly plausible that it is your pads or discs that are the reason. In fact, a disc or a set of dead plates will make a strong metallic friction noise that you will inevitably feel. To verify this, put your vehicle on safety stand, and verify the condition of your discs and pads by getting rid of the wheel. If they are involved, swap them as soon as possible , otherwise you will no longer be able to brake. If you experience a metallic noise from your vehicle, and you want infos about it, examine this guide for more details about brake noises on xxx.
If it is rather when you are turning, passing over a bump or sidewalk that you perceive a metallic noise on your smart fortwo, then your rods may be worn. Whether it is the steering or the stabilizer bar, their wear will cause a metallic snap when they hit or change direction. To verify this, put yourself under your vehicle, without the wheels, and move your rods, if they only oppose very little force it is likely that they will have to be changed. If this is your case, we would suggest that you have a look at this content page for a complete guide about steering noises on smart fortwo.
Other sources
>
- Engine silentblock
- Dead gearbox, or broken pinion
A bit like worn stabilizer bar, if your engine silent blocks are damaged, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your smart fortwo. Once screwed up, they will no longer accomplish their function as shock absorbers and, with each impact, or violent acceleration, a noise will appear. Therefore, please remember to verify their status and swap them if necessary. Feel free to consult this content page which is a complete file about strut mounts noises on smart fortwo, how to verify their condition and swap them.
Finally, the last common reason of metallic noise on smart fortwo. It’s because your transmission system is the origin. It is conceivable, either because of improper use of the gearbox or because of excessive wear, that some gears in your gearbox have broken and are wandering around in it. They will then generate a continuous metal rattling sound. That you shouldn’t feel in neutral. If this is your case, we would suggest that you read this detailed guide on the origins of steering noises on smart fortwo.
Metallic noise smart fortwo coming from the rear end of the vehicle
Exhaust pipe
If, on the other hand, you notice an exhaust noise that is more of a metallic type, it is plausible that one or more parts of your exhaust may be damaged. In fact, it is plausible that either the catalyst or the silencer may be the reason of this sound. To be sure, go under the vehicle, cold, and knock each of the previously stated parts with a hammer to locate the origin of the noise. You should perceive things moving in the problematic part, if it’s the exhaust baffles, you can try to hammer in the section a little to try to block them and limit their movements. If it is a dead catalyst, it will be necessary to consider replacing it, as well as the silencer. In such a case, to stop the metallic noise on your smart fortwo, you will either have to find a second hand one and do it yourself, or go to your mechanic.
Noise from wheels
- Bearings
- Brake pads or discs
As for the bearings of your vehicle, it is plausible that with wear they are at the origin of your metallic noises on your smart fortwo. Go a little further up in the content page where you will find information of the solution already exposed for the front part of the vehicle.
Finally, if the noise originates from your discs brakes or pads, you should refer to the part in question in the first section of this manual.
