Good day, I’ve been having a high frequency pipe for some time, which comes from the engine compartment or exactly said where the flat belt and LiMa is. A visit to the workshop revealed that it comes from the LiMa. Was first also my guess. Now yesterday the LiMa was exchanged and today I notice it still whistles. It seems to me that it comes somewhere from below, but it is very difficult to say exactly. Early when the engine is still cold, it whistles more. Driving is not so much to hear anymore. With old ventilation it whistles somehow more strongly, however, also the speed increases something. So now does not necessarily have to have something to do with ventilation?! If you turn off the ventilation and other consumers, you notice no difference. It whistles then about immediately. In your room you can hardly hear it, only if it is quiet and you listen closely. Outside you hear it more clearly and if the bonnet is open and you approach the belt, h If you get some gas, you don’t hear anything anymore. Very rainy. If the speed goes down then you can hear a bit whistling in the interior. When accelerating in the first and second gear you can also hear a quiet whistle when the engine is still cold. The smell is very close to that, on the video:https://www.youtube.com/watch?v=9j-yZ-TfVDw Data about the vehicle: Toyota Avensis 1.8l petrol 147 hp, BJ 2012, 35000 KM I would be happy if someone could say something about this problem? n new workshop visit can become very expensive again.