Experiencing noises from your vehicle quite often is never enjoyable, so listening air conditioning noises on your BMW 4 Series can be a matter. This manifestation may be a sign of a minor issue as well as a warning of a much bigger repair to come. In any case, it is very important to examine its source and take the required measures to correct the trouble, it is with this in mind that we wanted to create this document to help you understand it better. We will first look at the possible reasons for noise in the ventilation of your BMW 4 Series. Then, in a second step, we will deal with the noises related to the air conditioning of your vehicle.air-conditioning-noisebmw-4-series

Noise air conditioning BMW 4 Series : most regular origin coming from general ventilation

Loud noise or roar from ventilation or fan of your BMW 4 Series

Experiencing a air conditioning noise on BMW 4 Series is never pleasing, and can make your trips particularly uncomfortable. Ventilation is important whether it is in winter to warm up or defog or to cool down the car during the summer. In any circumstance, having a loud noise from the air conditioning of your BMW 4 Series is a matter that must be solved. This noise is very often connected with a worn or dirty fan motor. To be certain that the trouble is created by the ventilation, we recommend that you open the ventilation of the trouble spot and check the condition of the fan, possibly grease it first, and if this is not sufficient, it will probably have to be swapped.

I hear an heater fan noise like a click BMW 4 Series

We will now examine the clicking noises you may hear from your ventilation. A clicking noise from BMW 4 Series heater fan is often a consequence of a duct or fan blocked by a foreign body. This noise is supposed to build up as the air flow in the circuit gets larger. Remember to verify the cleanness of your air inlets at the top of your hood, for example. You will then have to open the conduit in question and find the foreign body. If the trouble remains, take your vehicle to your mechanic.

I acknowledge an hissing heater fan noise BMW 4 Series

Finally, if you experience a whistling noise in the ventilation of your BMW 4 Series, it may be that the source of it is associated with a fan that has shifted or is commencing to dry . In any case, you will have to check the fan in question to visually verify its condition. The easiest solution is to open the ventilation circuit again, and turn on the circuit while you are examining its proper action, you can try to grease it to limit this noise, but it is very likely that the final remedy is to replace it. If you have a whistling noise but are not sure if it is associated with ventilation, we advise you to read this article about front end noise on BMW 4 Series to discover its origin.

I hear an heater fan BMW 4 Series noise : specific air conditioning

Slamming noise air conditioning BMW 4 Series

We will now check out the particular part of the air conditioning side of your heater fans and the source of the noise it can emit. A clicking noise in your air conditioning, if it is short and when you start it only represents a good functioning of your air conditioning compressor which lights up, this noise can be loud. However, if you hear a clicking noise or air conditioning scrap metal on your regular BMW 4 Series, you will have to get worried in this case. Indeed, it can announce an air conditioning compressor clutch, or compressor itself that needs to be swapped. So have your mechanic verify its proper performance.

Pshhh noise / hissing air conditioning BMW 4 Series

If you notice pshhhh or whistling noise on the air condition side of your heater fan on BMW 4 Series, but in cooling mode, you have two possibilities to explicate this trouble. Indeed, at first, the most likely cause is that your air conditioning equipment is running out of gas, to verify it you should feel that the cold it has to produce is no longer as cold as before, if so, have your air conditioning system charged on your BMW 4 Series and the trouble should be fixed. Otherwise, you may experience a system leak and this psshhh or hiss may be associated with the gas getting out from the system. You can test the leak by integrating a tracer into your air conditioning system and monitoring for leaks, or more easily take your vehicle to your mechanic.