What is the working principle of the two wires on the brake fluid sensor?

[DeJayden]

That is used to detect the brake fluid level. It will trigger an alarm when the fluid level falls below the specified value: If it's the connector on the brake fluid reservoir, then those are the wires for the fluid level sensor! Its primary function is to monitor the brake fluid level. If the brake pads are severely worn and become too thin, the fluid level will drop. When the fluid level decreases, the sensor will detect it and trigger a warning light on the dashboard. This sensor is known as the brake fluid level sensor. Its purpose is to alert the driver when the brake fluid is insufficient, prompting them to add fluid and inspect the braking system! If the sensor connector wires are broken, the driver won't see the warning light on the dashboard when the brake fluid is low. In cases of minor oil leakage in the pipelines, failure to detect it promptly could pose certain safety risks.