2010 Volvo S 80 whistling sound when in motion

Asked by Mar 07, 2019 at 08:03 AM about the 2010 Volvo S80

Question type: Maintenance & Repair

I have a 2010 Volvo S 80, 168,000 mi, runs great. Over the weekend started with a whistling sound coming from dash area only when the car is in motion, turn heater fan on or off makes no difference. Help?

3 Answers


Whistling as you hear it is usually caused by a vacuum leak. As this happens only when car is in motion, this points to the cruise control unit. While moving over 30 mph, put the trans in neutral and rev the engine hard. does the whistle stop? Then let off the accelerator; does the whistle get louder? If yes, you have a vacuum leak. If not, could be a leak in the windshield sealant.

1 people found this helpful.

Thank you very much, I did as you described, it does not change the whistle at all, but I did notice one thing. It was warmer this weekend here than it has been in months, the whistle was quieter, to the point that I had to turn the radio completely off to hear it at some points. We also alternated turning on the fans (heat and air) and turning off, this made no difference either.

Can you still drive the car with the whistling sound?

Your Answer:


Looking for a Used S80 in your area?

CarGurus has 20 nationwide S80 listings starting at $3,950.

Postal Code:

Volvo S80 Experts

  • #1
  • #2
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Volvo S60
6 Great Deals out of 165 listings starting at $2,890
Used Volvo XC90
13 Great Deals out of 224 listings starting at $2,400
Used Volvo XC70
4 Great Deals out of 36 listings starting at $2,995
Used Volvo XC60
11 Great Deals out of 234 listings starting at $4,750
Used BMW 5 Series
48 Great Deals out of 644 listings starting at $2,999
Used Volvo V70
7 listings starting at $2,495
Used Volvo S40
41 listings starting at $2,495
Used Mercedes-Benz E-Class
63 Great Deals out of 796 listings starting at $5,550
Used Volvo C70
22 listings starting at $7,990
Used BMW 3 Series
173 Great Deals out of 2,608 listings starting at $2,729
Used Audi A6
25 Great Deals out of 222 listings starting at $4,200
Used Mercedes-Benz C-Class
89 Great Deals out of 1,654 listings starting at $2,494
Used Volkswagen Passat
70 Great Deals out of 1,216 listings starting at $2,495

Used Cars for Sale

2013 Volvo S80 For Sale
1 listings starting at $18,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.