What does it mean when the dashboard light comes on when stepping on the brake?

[VonDylan]

When the dashboard light comes on while stepping on the brake, it may indicate a brake pad warning. Normally, this indicator light should be off. When there is a malfunction or excessive wear in the brake disc, the light will illuminate, signaling that repairs are needed. It is essential to have it checked at a repair shop for a specific diagnosis. A red light is a warning that the vehicle should not be driven, usually indicating low brake fluid or the parking brake not being fully released. A yellow light means you can continue driving but should seek immediate inspection, such as insufficient brake pad thickness or an ABS system malfunction. The principle of braking is to convert the vehicle's kinetic energy into heat energy for dissipation. The kinetic energy comes from the power provided by the engine, which requires fuel combustion to generate. In other words, every time you step on the brake, some gasoline is wasted.