What are the reasons for the brake system warning light to illuminate?
2 Answers
The reasons for the brake system warning light to illuminate are as follows: 1. Severe wear of brake pads. Brake pads are divided into two types: those with sensor wires and those without. Brake pads with sensor wires will automatically complete the circuit when worn to the limit, triggering the warning light. Brake pads without sensor wires do not automatically alert but will produce a "metal-on-metal" hissing sound. 2. Low brake fluid level. Brake fluid plays a crucial role in the vehicle's braking system. When the driver presses the brake pedal, the force applied is transmitted by the master cylinder piston through the brake fluid to the wheel cylinders at each wheel, causing the brake pads to contact the wheels and stop the vehicle. Insufficient brake fluid is often accompanied by noticeably reduced braking power, and in severe cases, a complete loss of braking force. This situation can be resolved by promptly replenishing the brake fluid. 3. Other factors causing the brake system warning light to illuminate, such as brake system leaks or false alarms.
Last time the brake warning light on my car suddenly came on, which scared me into pulling over immediately. After getting out to check, I found the brake fluid reservoir was nearly empty, mainly due to low fluid level or a sensor issue. Common causes also include worn brake pads triggering the warning, ABS system malfunction, or loose wiring. My old car had a similar situation before, and the light went off after replacing the brake pads. I think when you notice the light is on, don't delay—stop and check the basics right away. If you can't figure it out, take it to a professional shop. Safety comes first, especially on slippery rainy roads—brake system issues can be dangerous.
