In the above vehicles, whistling noises can be produced when the air-conditioning system is operated. One possible cause could be vibrations in the "expansion valve/coolant hose" assembly.
A modified coolant hose with expansion valve is available from the auto manufacturer as a remedy. Vehicles up to the following vehicle identification no. may be affected:
SHSRE5***8U016571 / SHSRE7***8U004030
However, before replacing the hose assembly, it must be ensured that the noise is not caused by an incorrect coolant level.
For this vehicle, the fill level of R134a is 465g.
Important safety notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The reprinting, distribution, reproduction, exploitation in any form and disclosure of the contents of this document, even in part, is prohibited without our express written approval and indication of the source. The schematic illustrations, figures and descriptions are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved.
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