BMW 2 Series Active Tourer - buzzing noise when the air conditioning is switched off
| Data sheet | |
|---|---|
| Manufacturer | BMW |
| Vehicle model | 2 Series Active Tourer (F45) |
| Engine | All |
| Year of manufacture | 2018 - 2021 |
| Symptoms | Buzzing noise |
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their work. The information provided on this website is intended for use by suitably qualified personnel only.
Buzzing noise from the engine compartment
On the vehicle mentioned above, buzzing noises can be heard from the engine compartment when the air-conditioning system is switched off. These occur especially when the engine is idling.
Such noises can be caused by a too low / faulty power supply to the compressor or an internal defect of the compressor itself.
In order to remedy the situation or determine the cause, it is advisable to check the wiring on the compressor for corrosion, ingress of moisture, loose connections, a tight fit and damage in general.
In addition, the error memory should be read out and the measured value blocks checked with the aid of a diagnostic device (e.g. Hella Gutmann mega macs X). If no faults are found in this area, it can be assumed that the compressor itself is the cause of the noise. In the end, the only remedy is to replace the compressor.
Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval; indication of the document source is also required. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
Not helpful at all
Very helpful