Parking brake indicator
The indicator comes on when the parking brake is applied if the ignition switch is in the "START" (starter) or "ON" position (ignition on). The indicator goes out when the parking brake is completely released.
Brake fluid low level indicator
If the indicator remains on after the parking brake has been completely released, there may be a fault with the brake system.
[The original article is on: mazbook.ru]
Taking precautions, immediately pull over to the side of the road or to the edge of the roadway and stop.
You may notice that the brake pedal effort or brake pedal travel has increased (the pedal dropped closer to the floor). In both cases, the braking distance of the car will increase.
1. Turn off the engine and immediately check the brake fluid level. If necessary, add brake fluid and bring its level to the norm.
2. After adding brake fluid, check whether the indicator continues to light.
If the indicator continues to light or there are signs of a brake system malfunction, further driving of the vehicle is prohibited.