The gearbox is one of the main components of the Toyota I-unit. It is quite common for noises to appear over time, these are generally linked to a bad use of the clutch system. However depending on the noise, the source of the problem is sometimes different. We will find out what are the most common noises and how to overcome it .noise-gearbox-Toyota-I-unit

The box of my Toyota I-unit purrs

This type of rolling noise could arise in multiple situations. Most often the noise stops when using the clutch. In the event that the gearbox of the Toyota I-unit hums, it is generally a subtle noise , nevertheless quite annoying. Often it is a problem of rolling . If you are a DIYer, there is a method. you can embark on work and try to detect the faulty bearing. If not, go to an auto repairer instead. This kind of noise could worsen over time, and the complete gearbox will need to be changed.

Toyota I-unit: Whistling of the gearbox

In the event that the Toyota I-unit's gearbox whistles, you can expect a fairly rapid breakdown. It is therefore important to deal with it. This kind of hissing usually occurs when items collide and deteriorate. Difficult to say if repairs are possible or if it will be necessary to change the complete gearbox. We advise you to go to your garage for a more detailed check.

Toyota I-unit: The gearbox hangs and makes a cracking noise

In case the gearbox hangs when trying to shift into gear, there is inevitably a problem. Indeed, this is one of the most recurrent concerns. A gearbox is almost unbreakable in the event that we really take care of it, nevertheless a little brutal use on a daily basis will be able to generate problems very quickly. The problem is probably due to the wrong amount of oil! The method is simple. In case the level is low, you just need to redo the level. If the problem persists, your gearbox is broken. You will then most likely have to change it.

For automatic gearboxes

Since there is not too much human interaction, it is rare that the automatic transmission of a Toyota I-unit is damaged on its own. The causes are therefore very simple! The first thing to check is your oil level , then at the limit lubricate the device. However we advise you rather to go to a garage of the manufacturer, it is safer. You can post a comment if your problem is different to help our future readers.