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What are the reasons for the brake light to come on?

1 Answers

VonPhoebe

07/29/25 5:50pm

Reasons for the brake light to come on include insufficient brake fluid, damaged tail light bulb, and the need to replace brake pads in time. Insufficient brake fluid: Brake fluid is an indispensable part of the automotive braking system. When the driver steps on the brake pedal, the force applied is transmitted by the piston in the master cylinder through the brake fluid to the wheel cylinders located at each wheel, causing the brake pads to contact the wheels and stop the vehicle. If the brake fluid is insufficient, the braking power of the car may be inadequate, potentially leading to failure to brake, and the brake light will come on. Damaged tail light bulb: The brake fluid reservoir has upper and lower lines. When the brake fluid level drops below the lower line, it is detected by the sensor next to the reservoir and reflected by the brake light on the dashboard. If the tail light bulb is damaged, it may indicate a brake fluid leak, causing the brake light to come on. Brake pads need timely replacement: When the brake pads need to be replaced, the brake light will come on to alert the owner to replace the brake pads promptly.

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