The gearbox remains one of the fundamental components of the smart forfour. It is not uncommon for noises to appear over time, which are usually linked to a bad use of the clutch system. However with respect to noise, the source of the concern may be different. We will find out which are the most common noises and how to rectify them .
The box of my smart forfour purrs
This type of rolling noise will arise on several occasions. Generally this noise stops when the clutch is used. In the event that the smart forfour's gearbox hums, it's usually a subtle noise , nevertheless rather unpleasant. In most cases this is a concern for rolling . If you are DIY, there is a technique. you can attempt work and try to find the faulty bearing. If not, go to a specialist instead. This noise could worsen over time, and the entire gearbox will need to be replaced.
smart forfour: Whistling of the gearbox
If the gearbox of this smart forfour ever produces a kind of hissing sound, it can produce a rather sudden breakdown. It is therefore essential to deal with it. This kind of noise often occurs when constituents begin to collide and spoil. Difficult to say if work is possible or if it will be necessary to change the integral gearbox. It is advisable to go to your mechanic for a more detailed check.
smart forfour: The gearbox hangs and makes a cracking noise
If ever the gearbox hangs as soon as you shift gears, there is bound to be a problem. In practice, this is one of the most regular dysfunctions. A gearbox can never have a problem if you really take care of it, however a bad everyday habit can cause malfunctions very quickly. The problem probably comes from the wrong amount of oil! The technique is simple. If the level is ever low, simply reset the level. If the problem persists, it is because your gearbox is broken. You will then most likely have to replace it.
For automatic gearboxes
Since there is not too much human intervention, it is rare that the automatic gearbox of the smart forfour is damaged alone. The reasons turn out to be super easy! The first thing to check is oil level , then maybe grease the system. But we advise you rather to go to a mechanic of the brand, it is safer. You can write a comment to provide more precision to help other Internet users.