It is never pleasant to notice a sound that you don’t know where it comes from. So, what if you find a gearbox noise that remains on your BMW 4 Series? It is most likely to be a minimal matter, but before making sure of that, it is best to perform a few checks. Our staff has made up this content page to support you to fix it. First, we will see what the sources and different gearbox noises can be on BMW 4 Series, and second, what are the solutions available to you. gearbox-noise-bmw-4-series

The several noises and their sources

A gearbox / your transmission is the necessary component of the transmission, it is coupled to the clutch that will release the engine force on the gearbox systems. Hearing noises from your BMW 4 Series’s gearbox is rarely a good sign, its repair is practically unachievable to carry out due to the lack of skilled garages and its replacement requires a heavy expense. The gain is that generally its life expectancy after a first noise is quite long, which gives you time to arrange the repair, but it is crucial to verify immediately what is your exact matter.

Your BMW 4 Series transmission generates 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 change it in short order. 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 sadly experiencing squeaks, or humming noises when you change the gears of your BMW 4 Series, it is unfortunately a good bet that it is your gears that are starting to fatigued. If this noise is not restricted to passing the first gear and keep going when you drive and shift other gears. This is most likely a signal of a gearbox which is nearly good to be swap. If you have the feeling after checking that the noise comes from the clutch and not the gearbox, we recommend you to read this article in order to find the causes and solutions to a clutch noise on BMW 4 Series.

You feel a whinning or hummin sound from the gearbox of your BMW 4 Series

Finally, if you listen a noise almost like a humming or whinning sound on the transmssion of your BMW 4 Series, it is very often the case that the gearbox of your BMW 4 Series lacks oil. Indeed, if it lacks oil, the elements 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 happen if you do not fairly quickly change the oil. In this situation the oil should be black and your can can smell burning. In some cases this type of noises will be linked to a release bearing on BMW 4 Series, don’t hesitate to read our article.

The solutions existing if you feel a gearbox noise on your BMW 4 Series

  • Examine the gearbox oil of your BMW 4 Series via the level gauge and consider replacing it if the oil is black
  • Use the double clutch to try to make it last till you’re able to swap 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 professionals have the capacity to change damaged parts in your own system, they will almost always offer you a standard exchange.