Optimized Idle User Manual ENGINE MODE Optimized Idle will stop and restart the engine only as necessary, to keep engine temperature between 60°F (16°C) and 104°F (40°C) (factory set limits) and to keep the battery charged. When Optimized Idle starts due to low battery voltage (less than 12.2 V on a 12 V system, the engine will run for a minimum of two hours. For Engine Mode to function, all of the conditions listed at the beginning of Section 3, Refer to section "OPERATING OPTIMIZED IDLE" must be met. Use the following procedure to start Engine Mode: 1. Start the engine and let it remain idling. a. Close and secure the hood, cab or engine compartment door(s). b.
Put the transmission in neutral and in high-range (if equipped). c. Apply the parking brakes. 2. If you have Cruise Control, turn the Cruise Master Switch to the "ON" position. If the switch is on, turn it off and on after the vehicle is idling. 3. The Optimized Idle active light flashes. NOTE: If the engine does not start after the second Optimized Idle attempt, or if the vehicle moves while Optimized Idle is enabled, the Amber Warning Lamp (AWL) will turn on to indicate that Optimized Idle has been disabled (active light will turn off).
The ignition must be turned to the "OFF" position, the engine restarted, and the conditions in the beginning of Section 3, Refer to section "OPERATING OPTIMIZED IDLE" met in order to enable Optimized Idle. 4. When the idle shut down timer expires, the Optimized Idle light will stop blinking and remain on. The engine will stop and restart as needed. Optimized Idle is now in Engine Mode. All information subject to change without notice. 7 DDC-SVC-MAN-0019 Copyright © 2016 DETROIT DIESEL CORPORATION