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Author Topic: Golf GTI MK5 - Hissing noise in cabin – disappears when pressing brake pedal  (Read 83 times)

Offline Husy

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Golf GTI MK5 - Hissing noise in cabin – disappears when pressing brake pedal
« on: Yesterday at 02:40:08 pm »
Hey folks, looking for a bit of advice. I’m getting a hissing noise inside the cabin, and when I press the brake pedal it disappears. Has anyone experienced this before or know what the common causes or fixes might be? Any advice appreciated!
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Online GVK

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Re: Golf GTI MK5 - Hissing noise in cabin – disappears when pressing brake pedal
« Reply #1 on: Yesterday at 03:46:10 pm »
Leaking brake servo or brake booster as some call it. Also check the hose from the vacuum  pump on the side of the cylinder head to the servo for cracks and leaks.

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