What Is a Brake Booster?
The brake booster makes your brakes easy to press. A Cranbourne West brake specialist explains.
What it is & what it does
The brake booster (servo) multiplies the force from your foot so you don’t need to push hard to stop. Most use engine vacuum; some modern and hybrid/EV cars use an electric or hydraulic booster.
It sits between the brake pedal and the master cylinder.
Signs of trouble & how we help
A failing booster makes the pedal feel hard and braking require much more effort, sometimes with a hiss (a vacuum leak). It’s a safety item that needs prompt attention.
We test the booster and its vacuum supply and replace what’s faulty so braking is light and safe again.
Questions about your car? Just ask.
Understanding what’s under the bonnet makes servicing decisions easier — and we’re always happy to explain what your car needs and why, in plain English.
Book a service or a check with a Cranbourne West specialist online in 60 seconds, or call 03 8782 0711.
What Is a Brake Booster? — FAQ
It multiplies your pedal force so braking is light — most use engine vacuum.
A hard pedal needing much more effort, sometimes with a hiss.
Yes — it affects braking effort. Get it checked promptly.
We test the booster and its vacuum/electric supply.
Related guides & services
Need yours checked?
Trusted Cranbourne West car specialists — RACV-accredited, fixed written pricing. Book online or call 03 8782 0711.