What light comes on when the brake fluid is gone?

[VonFrancisco]

The handbrake warning light will illuminate when the brake fluid is low. This is because there is a fluid level sensor in the brake fluid reservoir that monitors the amount of brake fluid. If the brake fluid level drops below the sensor's position, it indicates a decrease in brake fluid, alerting the driver to check the brake system. Below is some related information about low brake fluid: 1. Content one: Reduced brake fluid due to thinning brake pads. Typically, brake pads have a service life of about 80,000 kilometers. If the vehicle is used frequently and braking is more frequent, the brake pads experience more friction, leading to faster wear. Conversely, if the vehicle is used less and the driver prefers to downshift to reduce speed before braking, the brake pads wear much more slowly. 2. Content two: As the brake pads wear down over time, the pistons in the brake calipers gradually extend to compensate for the gap created by the wear. These pistons are pushed by the pressure generated by the brake fluid when braking. The adjustment of the pistons increases the internal space within the brake calipers, and the extra space is filled by the brake fluid. This results in a noticeable decrease in the brake fluid level in the reservoir.