Brake System Warning Light
Either the parking brake is on or the brake system has a fault, most often low brake fluid.
Critical risk
If the parking brake is fully released and the light stays on, stop safely and check the brake fluid. Do not drive if the pedal feels soft or travels further than usual.
Short answer · Is it safe to drive with the brake warning light on?
Only if the parking brake was simply still applied. If the light stays on after releasing it, the brake fluid may be low or a hydraulic fault may be present, which can reduce braking power. Stop safely, check the fluid level and the pedal feel, and have the car recovered if anything is wrong.
What to do
- Release the parking brake fullyOn many cars the same light shows the parking brake.
- Stop safely if it stays onTest the pedal gently at low speed. A soft or sinking pedal means you must not continue.Driving with low brake fluid can lead to brake failure.
- Check the brake fluid levelThe reservoir under the bonnet has MIN and MAX marks. A low level points to worn pads or a leak.
- Get it inspectedA workshop checks for leaks, pad wear and the hydraulic system before you rely on the brakes again.
How is the light behaving?
| What you see | What it usually means | What to do |
|---|---|---|
| Steady | Parking brake on, low brake fluid or a hydraulic fault | Release the parking brake; if still on, stop and check |
| Flashing | Electronic parking brake or brake system fault on some cars | Stop safely and check the message on the display |
| On for a few seconds at start-up | Normal bulb check | Nothing |
Possible causes
- Parking brake appliedThe switch at the lever or electronic brake turns the light on.
- Low brake fluidWorn pads lower the level slowly; a fast drop means a leak.
- Hydraulic leakA leaking line, hose or caliper reduces pressure.
- Brake force distribution faultOn some cars an ABS fault also lights the brake symbol.
Don't confuse it with
Questions about Brake System Warning Light
Can I top up brake fluid myself?
You can top up with the fluid type printed on the cap, but a low level always needs a check for wear or leaks.
Why are the brake and ABS lights on together?
Together they can mean the electronic brake force distribution is not working. Drive very carefully to a workshop or have the car recovered.