Here is a weird one. I have a 2002 S60 and when I first start driving, I will hear a hissing sound like pressurized air releasing from the pedal area. But if I touch my brake - even slightly, it will cease immediately and then start again when the brake is released. Any ideas as to how to fix this one with spending $800 at the dealer...

Thanks for any help - Dan

 

You need to have the Brake booster replaced.

 

Thanks sounds expensive- do I have a safety issue here.

 

yes and no... do it soon, a booster isnt too bad.

 

When the booster goes out all the way the brake pedal will be Very Hard.

 

you will still be able to break but you wont have power breaks... it will be like driving a car from the 50s

 

It is harder to stop than like the Manual brakes.