It is never enjoyable to notice a sound you don’t know anything about and comes from your car. So what if you determine a noise that persists in the cabin of your BMW 4 Series? It is highly possible that this is a unimportant issue, but before being sure of that, it is better to do some checks. Our team has produced this article to help you locate and adjust this cabin noise. First, we will look at those that come from the dashboard, then noises from the cabin, the doors, and at last the plastic noises on BMW 4 Series that surface when it is hot.cabin-noisebmw-4-series

Reasons that can cause noise in the passenger cabin of your BMW 4 Series

I encounter plastic rattling noises on the dashboard BMW 4 Series

One of the possible elements that can generate a plastic rattling noise in your BMW 4 Series is that your dashboard, after a repair or vibrations suffered during its lifetime, it may have fasteners that have come loose or unscrewed. Try to identify the precise area of this plastic rattling noise on BMW 4 Series and using your vehicle’s technical manual try to examine the tightness of all the screws involved. Otherwise take your car to your technician.

I discern noises in the cabin BMW 4 Series

The second most regular possibility of a cabin noise in your BMW 4 Series is that some elements that come apart may be loose, either because of too frequent disassembly that would have reduced the holding between these elements, or because of vibrations. Think about examining your ceiling light which is frequently the reason of a cabin noise on BMW 4 Series. Otherwise open your doors, those closest to the source of the noise and examine all the openings, covers that are located there, some may have moved and therefore vibrate while driving. In most cases putting them back in place or gluing them is enough to fix the issue.

I hear door noises on my BMW 4 Series

If you feel a plastic noise on the doors of your BMW 4 Series, it is possible that it is one of your door trim fasteners that is destroyed, or a screw from an internal mechanism of the glass for example or the loudspeaker that has unscrewed and therefore generates the component in question to rub against the door interior. Feel free to take apart your door trim to find the origin of this plastic door noise on BMW 4 Series. For more information on door noises on BMW 4 Series, feel free to read this article.

I notice a cabin noise when hot BMW 4 Series

If, on the other hand, you hear cabin noises in your BMW 4 Series when summer arrives or when the outside temperature is warm, it is unfortunately rational that this trouble manifests itself more during these times. Indeed, plastic being a rather flexible material will expand with heat and will therefore much more easily rub on other plastic or metal parts, this is what will generate cabin noises when hot on your BMW 4 Series. It is difficult to solve this issue, you can always look for the exact source of the noise, and try to put foams or tape between the expanding parts to limit their noise from their expansion.