Why does the brake warning light come on when the brakes are working normally?

2 Answers
Courtney
09/07/25 7:37am
If the brake warning light is on but the brakes are functioning normally, it may be due to severely worn brake pads. Here is some knowledge about why the brake warning light comes on: 1. The principle behind the light: Brake pads equipped with sensor wires will automatically complete the circuit when worn down to the limit, triggering the warning light. 2. Low brake fluid level: When the driver presses the brake pedal, the force is transmitted through the brake fluid to the brake calipers at each wheel, causing the brake pads to contact the wheels and stop the vehicle. Insufficient brake fluid will also result in noticeably reduced braking power, and in severe cases, complete loss of braking. This issue can be resolved by promptly replenishing the brake fluid.
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Stephanie
09/19/25 6:42am
I just encountered this situation last week! Actually, the brake light coming on doesn't always mean the brakes are faulty. Most likely, it's an issue with the fluid level sensor in the brake fluid reservoir - that thing is super sensitive and will give false alarms when the fluid is slightly low. It could also be related to your ABS system; when the wheel speed sensor wiring gets waterlogged and shorts out, the light may come on randomly. The brakes themselves being fine indicates the hydraulic system isn't failing, but don't take it lightly. Last time, my brake pedal suddenly went soft after the light had been on for several days. I recommend first checking the brake fluid level. If that's normal, get to a repair shop immediately to read the trouble codes. Small issues left unfixed can turn into major headaches.
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