Why do i hear a hissing noise from the Jeep Cherokee breaks?

[khandelwal]

I hear a hissing noise from the breaks and i dont know why. please help

[JeepDxb]

Start with checking where the noise if coming from, its it from the valve leaking.

[albaloushi]

I hear a hissing noise from the breaks and i dont know why. please help

While pressing the brake pedal if you hear the hissing sound, that means, your calliper seals are worn out.

look at the back side of your wheels, u will find some oil stain marks. its a cheap repair, get it done before it damages your master cylinder