A/C, Interior - Whistle From Right Side of Dash
NO: 87-56DATE: 12-11-2006
MODEL:
XC90 2003 -
XC70 2001 -
V70 2001 -
S80 1999 -
S60 2001 -
SUBJECT: Whistling Sound from Windshield / Dashboard Area, Passenger Side
REFERENCE: VIDA, TNN 84-11 (Roof Rails Front Attachment)
DESCRIPTION:
If a whistling sound or wind noise is heard from the passenger side dashboard area of the cabin. One reason for this may be that the foam sealing between the body and climate unit (air inlet) is incorrectly positioned. The sound may vary in strength but is more audible at higher speeds; 50 mph (80kph) and above.
NOTE: This issue seems to be mainly XC90 related but other variants may be affected.
SERVICE:
Identify location of noise. Inspect the seal and reposition as described in the following.
Identify location of noise
If this is an XC90 and is within chassis numbers 003400 - 235925 ensure the noise is not from the upper windshield / roof rails front attachment area. If the noise is from this area refer to TNN 84-11 (if still applicable).
Inspect / Correct the Seal Position
In VIDA see: Remove wiper arms.
Remove cowl (plenum) cover. Remove water protection housing (snapped into the inlet).
Inspect seal and adjust if incorrectly positioned.
Make sure the foam seal is airtight all around the opening between the body and plastic housing.
If needed; with your hand reposition the seal to ensure any gap is filled.
Correct position of front area shown with dotted line here.
NOTE: This shape is normal in the rear area.
Hint: Use a mirror for this check.
Also inspect the alignment of the climate box housing and the collar so that there is no gap as indicated here.
If necessary; reposition for better sealing.
Inspect / Modify the Recirculation Seal
A similar sound may be heard with recirculation ON (door closed) if there is a small gap between the rubber door seal and plastic housing.
This may happen if the recirculation door has a rounded shape or if the pressure of the door is insufficient.
If needed; clean the rubber surface with P/N 1161436 or similar and apply felt tape (P/N 9511099) onto the rubber seal of the door as shown.
Reassemble
Reinstall parts in reverse order