It is never enjoyable to listen to a sound that you don’t know where it originates from. So, what if you discover a gearbox noise that persists on your smart fortwo? It is most likely to be a minor issues, but before making sure of that, it is best to do a few verifications. Our team has made this article to help you to fix it. First, we will see what the sources and different gearbox noises can be on smart fortwo, and second, what are the solutions accessible to you. 
The several noises and their origins
A gearbox / your transmission is the necessary component of the transmission, it is coupled to the clutch that will release the engine pressure on the gearbox mechanisms. Experiencing noises from your smart fortwo’s gearbox is rarely a good indicator, its fix is nearly unimaginable to do due to the lack of specialized mecanician and its replacing demands a heavy expense. The advantage is that generally its life expectancy after a first noise is quite long, which gives you time to plan the fix, but it is necessary to examine right away what is your exact issues.
Your smart fortwo transmission makes noise in neutral
If you feel a gearbox noise even when you are in neutral, it shows that the gearbox’s internal elements are already well worn and that you will have to swap it fairly quickly. Indeed, if you are not even with a gear on and it makes sound, the pinions must already be at the end of their life.
You listen a squeaking, a humming noise at the time of the gear shift
If you are unfortunately feeling squeaks, or humming noises when you change the gears of your smart fortwo, it is unfortunately a good bet that it is your gears that are starting to fatigued. If this noise is not limited to passing the first gear and keep going when you drive and shift other gears. This is most likely an indication of a gearbox which is nearly good to be change. If you have the feeling after examining that the noise comes from the clutch and not the gearbox, we suggest you to browse this content page in order to find the causes and solutions to a clutch noise on smart fortwo.
You feel a whinning or hummin sound from the gearbox of your smart fortwo
Finally, if you listen a noise close to a humming or whinning sound on the transmssion of your smart fortwo, it is very often the case that the gearbox of your smart fortwo lacks oil. Indeed, if it lacks oil, the parts will be exposed and grind agaisnt each other. In addition, each of its contacts will develop chips or metal dust that will mix with the oil and produce even greater resistance to mechanisms that are already worn out, a snowball effect will appear if you do not fairly quickly change the oil. In this case the oil should be black and your can can smell burning. On occasion this kind of noises will be linked to a release bearing on smart fortwo, don’t hesitate to check out our content page.
The solutions available if you feel a gearbox noise on your smart fortwo
- Check the gearbox oil of your smart fortwo via the level gauge and consider changing it if the oil is black
- Use the double clutch to try to make it last till you’re able to change the gearbox, this will limit the already advanced wear of your gearbox and limit the wear of the pinions.
- Start looking for a second-hand or new gearbox, very few technicians have the capability to change damaged parts in your own system, they will almost always offer you a standard exchange.
