Unpleasant odour inside the vehicle. No typical musty odour caused by microorganisms on the evaporator surface. It may be caused by porous hoses of the engine ventilation.
(See Figure 1.)
In this case, replace the affected engine breather hoses, as the smell enters the passenger compartment through the vents.
In addition, check the surrounding hoses (including the area of the mounting brackets) and replace or clean them if necessary.
Additional information:
Figure 2+3 showing the location of the engine breather hoses.
Figure 1 / view
- porous hose -
Figure 2: View / location in the engine compartment without cover
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.
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