Brake warning signs: squealing, grinding, pulling and a soft pedal
What common brake noises and feelings usually mean, and when to stop driving.
3 min read
Brakes wear gradually, so problems can creep up without you noticing. Most of the time the car gives you some warning first. Here’s what the common signs tend to mean.
Brakes are safety-critical. Everything below is a reason to have the car checked, not something to fix at home.
Squealing or squeaking
A high-pitched squeal when you brake is often the first sign of wear. Many brake pads have a small metal wear indicator that squeals against the disc when the pad material gets low.
Not every squeak means worn pads. A light squeak after rain or on a cold morning can come from moisture or surface rust on the discs, and it often stops after the first few stops. But a squeal that keeps coming back, or that you hear every time you brake, is worth booking in.
Grinding
A harsh grinding or scraping noise usually means the pads have worn through and metal is rubbing on the disc (also called a rotor). This damages the discs quickly and reduces how well the car stops. Grinding isn’t something to wait on. Get it checked straight away and keep driving to a minimum until then.
Pulling to one side
If the car pulls to the left or right when you brake, the brakes may not be working evenly. Possible causes include a sticking brake caliper, a worn or contaminated pad, or a problem with a brake hose. Pulling can also come from tyres or wheel alignment, but if it only happens when you brake, the brakes are the likely cause.
Uneven braking can make the car harder to control in an emergency stop, so have it looked at promptly.
A soft or spongy pedal
If the brake pedal feels soft, sinks further than usual or needs pumping to work, treat it as urgent. Common causes include air or moisture in the brake fluid, a fluid leak or a problem with the master cylinder. Stop driving and get it checked before you go any further.
Brake fluid also absorbs moisture over time, which can make it less effective under heavy braking. That’s why manufacturers specify replacing it at set intervals. Your logbook lists the interval for your car.
Vibration through the pedal or steering wheel
A shudder or pulsing through the brake pedal or steering wheel when you brake often points to uneven or worn discs. It’s not usually an emergency, but it’s a sign the brakes need attention.
One exception: if you brake hard on a slippery road and feel a rapid pulsing through the pedal, that’s usually the anti-lock braking system (ABS) doing its job, and it’s normal.
The brake warning light
A red brake light on the dashboard can mean the handbrake is still on, the brake fluid is low, or there’s a fault in the braking system. If the handbrake is fully released and the light stays on, don’t keep driving on it. Low brake fluid can be a sign of a leak or of worn pads.
Other signs to watch for
- a burning smell after normal driving
- the car taking longer to stop than it used to
- the handbrake needing to be pulled higher than before to hold the car
- fluid leaking near a wheel or under the front of the car
- a clunk or knock when you first brake
What to do
If you notice any of these, don’t wait for your next scheduled service. Brake problems usually get worse over time, and small jobs can turn into bigger ones. Call Ridgeline Auto on 02 9000 0000 and we’ll take a look.
For grinding, a soft pedal or a brake warning light that won’t go out, don’t keep driving: get it checked first.