What is brake booster replacement?
A failed brake booster makes braking very heavy, so it needs replacing for safe stopping.
The booster uses engine vacuum to multiply your pedal effort. When its diaphragm or valve fails, the pedal becomes hard and the car takes much more effort to stop.
Signs you need it
- Very hard brake pedal
- Hissing noise when pressing the pedal
- Engine idle changes when braking
How it works
- Test vacuum and booster
- Replace the booster
- Check the vacuum hose and valve
- Test braking
You can choose a workshop visit or have a professional come to your home, work or depot.
How much does it cost?
The exact price depends on your vehicle and the job. On MYLES, each professional shows a fixed price, a starting price, a range, or sends a quote — so you can compare like for like before you book.
- Booster part price
- Access behind the engine
- Master cylinder removal
Tips
- Check the vacuum hose first as it is a cheaper fix
- Do not drive far with a hard pedal
Why it matters
Essential for safe braking.