Engine Brake System

The Detroit™ Gen 5 Heavy Duty engine may be equipped with an engine brake. Before operating the vehicle, the operator must become familiar with the engine brake system to obtain optimum benefit from it. The engine brake control systems may vary slightly, depending on the engine brake configuration and cab options design. However, basic operator controls are similar for all models. The Detroit Diesel Electronic Control® (DDEC®) system may activate or deactivate the engine brakes based on a number of monitored engine parameters. For information on engine brakes operation, see How to Operate the Engine Brakes.