Park Brake Warning Light
The parking-brake or brake-system warning light indicates that the parking brake may be applied or that a brake-system fault has been detected.
Fully release the parking brake and check whether the warning goes out. If it remains illuminated, stop safely and inspect the brake system before continuing.
A red parking-brake warning can be a normal reminder when the parking brake is applied, but it can also indicate low brake fluid or another braking-system problem. C0111 is not a universal definition for every vehicle, so the exact code should be verified by make and model.
❌ Stop Driving
If the red brake warning remains on after the parking brake is released, do not continue normal driving until the braking system is checked.
$50-$1,500+ depending on the brake-system fault
Repair costs vary depending on the exact diagnostic trouble code, vehicle make and model, labor rates, and which component has failed. Always diagnose the problem before replacing any parts.
A parking-brake light can be normal when the brake is applied, but a persistent red brake warning can indicate a serious braking fault and should be checked before driving.
Why is my parking brake light still on?
Most often the lever or switch has not fully released. If it stays lit with the brake off, the same lamp is reporting something else, usually a low brake-fluid level or a fault the brake module has stored.
Can I drive with the parking brake light on?
Not once you have confirmed the brake is released. At that point the lamp is a brake-system warning, and low fluid can mean a leak that will reduce your stopping ability without much notice.
How is a parking brake warning diagnosed?
Confirm the brake is fully off, then check the fluid level in the reservoir and look for leaks at the calipers, lines, and master cylinder. Inspect the pads and hydraulics, scan the brake or ABS module for stored codes, and run the electronic parking-brake self-test on vehicles that have one.
How much does it cost to fix a parking brake warning?
Adjusting a cable or topping up fluid may cost under $100. Electronic parking-brake actuators typically run $200-$800 each, and hydraulic repairs can reach $1,500.
See every fault code, sensor test, and repair step for C0111