Optimized Idle

Optimized Idle reduces idle time by automatically stopping and restarting the engine. Besides saving fuel, it helps keep the batteries charged while maintaining engine and cab temperature.

The following conditions must be met for the optimized idle to function:

• Vehicle in neutral gear

• Parking brake set

• Hood latched

• Sleeper fan on

Optimized idle has four unique operating modes: battery, cold startability (engine oil temperature), interior comfort mode, keyless.

• Battery mode: starts the engine when battery voltage is below a certain threshold.

• Engine oil temperature mode: starts the engine when the engine oil temperature is below a certain threshold.

• Comfort mode: starts the engine to maintain the driver's selected interior temperature

• Keyless mode: maintains any of the modes above without the key in the ignition switch.

Optimized idle can be started with the engine running or the engine off.

1. With the key on, go to the Cab menu and select Optimized Idle. A caution notice will popup.

2. Read the caution and press Enable.

3. A screen may appear to start Standby or another mode. If this is the only option, press Enable.

4. Otherwise a screen will appear with an Enable with Comfort button as an option. If you want to optimize the environment of the sleeper section, select the Enable with Comfort button.

5. The vehicle will go into standby mode, an under hood alarm will briefly sound, and the engine will crank and achieve 900 rpm. The screen will change to the selected mode. A Disable button will be present.

6. The engine and fan/air conditioning will run until it achieves the temperature requested by the driver. The engine will then shut down.

Optimized idle can be shut off by ICUC controls or pressing the brake. If the sleeper fan is turned off, optimized idle will not shut down but the engine will.