When does the red brake light illuminate?
When does the red brake light illuminate? The red (RBWL) lamp illuminates when there's a hydraulic problem like low brake fluid level or a loss of hydraulic pressure in one of the brake circuits. It also illuminates if the parking brake is engaged or shorted to ground. It often illuminates because the brake fluid level is low. Can a parking brake light be activated by ABS? Usually, the brake fluid level sensor and the parking brake are the only two items that can activate the BRAKE light. But, not all vehicles are the same, and some of the earliest ABS...