is it pressurize like a fuel system?
The brake system is only pressurized when pressing the brake pedal unless the ABS (anti-lock brake system) is activated. ABS will adjust brake pressure to each wheel depending on if a wheel is trying to lock up. There are speed sensors on each wheel that tell the computer what the wheels are up to. If there is a stability system built in to keep you on the road even when not using the brakes (ESP-electronic stability control), the ABS may activate one or two brakes to bring the car under control in the event of a spin. This will pressurize parts of the brake system without the brake pedal.
no, not when the pedal is not being pushed. if it senses different wheel speeds it releases pressure to the slower wheels to stop them from locking
No! you pressurise the system when you press your foot on the brake pedal but the system is not pressurised until then
No pressure till you step on the brake petal - regular or anti-lock brakes.
