A/C - Musty Odors From Vents
NO: 87-53DATE: 11-01-2005
MODEL: S60, S80, V70, XC7O, XC9O
M. YEAR: MYO3 - MYO6
SUBJECT:
Air Conditioning, "Afterblow" Function.
REFERENCE: VIDA
DESCRIPTION:
Under certain conditions, customers may complain about a musty odor from the A/C system.
Activating the afterblow function prevents this from occurring.
VEHICLES AFFECTED:
SERVICE:
To avoid a musty odor from the A/C system, it is strongly recommended to enable the after blow function on all cars within the above chassis limits, especially in warm and humid climates.
For customer complaints matching the above description, perform following steps:
1) Check NC system for leaks (the PAG oil in the refrigerant has a very distinctive smell).
2) If you suspect a leak, perform fault tracing to locate the leak (use UV-light) and replace the faulty component.
3) If there is no indication of a leak, switch on the afterblow function according VIDA.
4) If activation of the afterblow function does not solve the problem, further fault tracing must be done:
Important notes:
^ Downloading new software in the 0CM may switch off the afterblow function (default value in the car configuration file is "OFF" for all cars in or above the chassis ranges listed under vehicles affected). After downloading or upgrading the 0CM software, always verify if the afterblow function is still enabled.
^ XC9O V8 variants DO NOT have the afterblow option feature.
General Information about the afterblow function:
When the afterblow function is activated and certain criteria are fulfilled (depending on driving cycle and use of the A/C system) the interior fan will start to blow 50 minutes after the car is switched off. The interior fan will blow for 5 minutes with external air directed to the dashboard air outlets.
If you activate the afterblow function, it is recommended to inform the customer about this function and the behavior of the car.
WARRANTY CLAIM INFORMATION