1. Check the brake fluid level. If the brake fluid level is low, it can cause the brake warning light to come on. Check the brake fluid level by looking at the reservoir under the hood. If the fluid level is low, add brake fluid until it reaches the "full" mark.
2. Inspect the brake pads. Worn brake pads can also cause the brake warning light to come on. Inspect the brake pads by removing the wheels and looking at the brake pads. If the brake pads are worn down to less than 1/4 inch, they should be replaced.
3. Check the brake rotors. Warped or damaged brake rotors can also cause the brake warning light to come on. Inspect the brake rotors by looking at them through the wheels. If the brake rotors are warped or damaged, they should be replaced.
4. Scan for diagnostic trouble codes (DTCs). If the brake warning light is still on after you have checked the brake fluid level, inspected the brake pads, and checked the brake rotors, you can scan the vehicle for DTCs. This can be done using a scan tool or by taking the vehicle to a qualified mechanic.
Clearing the Brake Warning Light
You can clear the brake warning light by:
- Pressing and holding the brake pedal while turning the ignition on and off three times.
- Using a scan tool to clear the DTCs.
- Disconnecting the battery for a few minutes.
