Brake Warning Light On
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A problem in the hydraulic brake system — or simply the parking brake left on. Check the parking brake first.
What it means
This light comes on with the parking brake engaged, low brake fluid, or a hydraulic fault. If it stays on after releasing the parking brake, treat it seriously: low fluid usually means a leak or very worn pads, and braking performance may be compromised.
Can you keep driving?
If the light goes out when you release the parking brake, you are fine. If the red light stays on, stop in a safe place and do not drive; arrange professional help or a tow. Low fluid or a soft or sinking pedal makes that especially urgent — normal pedal feel does not clear a persistent warning.
What to do now
- 1
Fully release the parking brake and see if the light goes out.
- 2
Check the brake fluid reservoir against the MIN/MAX marks.
- 3
If fluid is low, look for wet spots near wheels or under the car — a leak means do not drive.
- 4
While stationary in a safe parking spot, gently press the brake pedal and note its feel for the technician. Do not take a test drive: if the red warning remains on, or the pedal feels soft or sinks, arrange a tow.
Likely causes
- • Parking brake not fully released
- • Low brake fluid (leak or worn pads)
- • Failed brake master cylinder
- • Faulty fluid-level or parking-brake switch
Typical fix cost
$10–$20 for fluid top-up; $150–$350 per axle for pads; $300–$700 for master cylinder or line repairs
Ranges reflect mainstream US parts-and-labor pricing; your vehicle and region will vary.
Helpful next steps
Follow the driving guidance above first. These guides and tools can help once the car is safely stopped.