# Hissing noise when not breaking

**URL:** <https://community.cartalk.com/t/hissing-noise-when-not-breaking/33363>\
**Category:** Maintenance/Repairs\
**Created:** [July 13, 2009, 9:20pm UTC](https://community.cartalk.com/t/hissing-noise-when-not-breaking/33363 "2009-07-13T21:20:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mollylosh](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@mollylosh](https://community.cartalk.com/u/mollylosh)\
**Post date:** [July 13, 2009, 9:20pm UTC](https://community.cartalk.com/t/hissing-noise-when-not-breaking/33363/1 "2009-07-13T21:20:02Z")

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Dear Car Talk Community,  
  
  
  
 I have recently noticed a hissing noise coming from the driver side floor/leg area of my 2003 Ford Escape. The hissing stops when I apply any pressure to the breaks, but resumes when I release the breaks. This seems to have begun after a spell of particularly hot weather.  
  
  
  
 Any advice on what may be causing this is much appreciated!  
  
  
  
 --Molly