2009 Dodge Ram 1500 Pickup Owner Manual - Page 238

236 UNDERSTANDING YOUR INSTRUMENT PANEL If the light remains on when the parking brake has been disengaged, and the fluid level is at the full mark on the master cylinder reservoir, it indicates a possible brake hydraulic system malfunction or that a problem with the Brake Booster has been detected by the Anti-Lock Brake System (ABS) / Electronic Stability Program (ESP) system. In this case, the light will remain on until the condition has been corrected. If the problem is related to the brake booster, the ABS pump will run when applying the brake and a brake pedal pulsation may be felt during each stop. NOTE: The light may flash momentarily during sharp cornering maneuvers, which change fluid level conditions. The vehicle should have service performed, and the brake fluid level checked. If brake failure is indicated, immediate repair is necessary. WARNING! Driving a vehicle with the red brake light on is dangerous. Part of the brake system may have failed. It will take longer to stop the vehicle. You could have an accident. Have the vehicle checked immediately. The dual brake system provides a reserve braking capacity in the event of a failure to a portion of the hydraulic system. A leak in either half of the dual brake system is Vehicles equipped with the ABS, are also equipped with indicated by the Brake Warning Light, which will turn on Electronic Brake Force Distribution (EBD). In the event of when the brake fluid level in the master cylinder has an EBD failure, the Brake Warning Light will turn on dropped below a specified level. along with the ABS Light. Immediate repair to the ABS The light will remain on until the cause is corrected. system is required.