# Brake pedal sound

**URL:** <https://community.cartalk.com/t/brake-pedal-sound/54769>\
**Category:** Maintenance/Repairs\
**Tags:** s60, volvo\
**Created:** [September 7, 2010, 3:47pm UTC](https://community.cartalk.com/t/brake-pedal-sound/54769 "2010-09-07T15:47:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![nicastroloff](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nicastroloff](https://community.cartalk.com/u/nicastroloff)\
**Post date:** [September 7, 2010, 3:47pm UTC](https://community.cartalk.com/t/brake-pedal-sound/54769/1 "2010-09-07T15:47:50Z")

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When I hit the brake pedal on my 2002 Volvo S-60, it sounds like a balloon is being deflated somewhere behind the dashboard. Any thoughts? Does this require immediate attention, or is it safe ti simply live with the sound?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [September 7, 2010, 4:02pm UTC](https://community.cartalk.com/t/brake-pedal-sound/54769/2 "2010-09-07T16:02:34Z")

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The noise might be caused from the vacuum brake booster check valve or from a leak in the rubber diaphram within the brake booster. When it comes to the brake system, any unusual noises should be checked out for safety’s sake.

Tester

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**Author:** ![missileman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/missileman/32/1366_2.png) [@missileman](https://community.cartalk.com/u/missileman)\
**Post date:** [September 7, 2010, 5:44pm UTC](https://community.cartalk.com/t/brake-pedal-sound/54769/3 "2010-09-07T17:44:42Z")

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I agree. This sound is alerting you to a possible brake problem. Don’t ignore it.

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**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\
**Post date:** [September 7, 2010, 6:29pm UTC](https://community.cartalk.com/t/brake-pedal-sound/54769/4 "2010-09-07T18:29:02Z")

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A slight “whoosh” sound while you are moving the brake pedal is normal. If the some continues while you are holding the pedal (but not moving it), then you have a vacuum booster problem.