General Description, Standard Adaptive Cruise Control
Warning: Do not use the cruise control system when driving conditions do not permit maintaining a constant speed, such as in heavy traffic or on roads that are winding, icy, snow-covered, slippery, or roads with a loose driving surface. Failure to follow this precaution could cause a collision or loss of vehicle control, possibly resulting in personal injury or property damage.
Notice: When the cruise control is engaged, do not attempt to shift gears without using the clutch pedal. Failure to follow this precaution will result in a temporarily uncontrolled increase in engine speed. Transmission damage and gear stripping could result.
Note: If the vehicle is equipped with a Detroit DT12 automated transmission, setting the cruise control with the engine brake on will activate cruise descent control mode. Moving the transmission shift lever to the top position will resume the set cruise speed. Moving the lever down to engage the engine brake after the cruise control has been set will activate deceleration mode. See ‘Cruise Descent Control and Deceleration Modes’ in this chapter.
In the ICUC, standard cruise control is operated by three switches mounted in the right-hand switch pod of the steering wheel. See Fig.Steering-Wheel-Mounted Right-Hand Switch Pod, ICUC.
Steering-Wheel-Mounted Right-Hand Switch Pod, ICUC

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Cruise Accelerate/Resume
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Quick Access System Settings
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Cruise Decelerate/Set
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Phone Hang-Up/Reject
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Marker Interrupt (not available in all markets)
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Phone Pick-Up
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Headlamp Interrupt (not available in all markets)
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Cancel Cruise Control
In the ICC5, standard cruise control is operated by three buttons mounted in the left-hand pod of the steering wheel. See Fig.Steering-Wheel-Mounted Left-Hand Switch Pod, ICC5.
Steering-Wheel-Mounted Left-Hand Switch Pod, ICC5

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Menu Button Press the button to access instrument panel menus. When the button is pressed, information appears on the driver display screen.
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Cruise Accelerate/Resume
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Back Button
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Quick Access System Settings
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Marker Interrupt
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Cruise Cancel
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Cruise Decelerate/Set
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Cruise Decelerate/SET Button Press to set the cruise speed while the vehicle is traveling at the desired speed. Press and hold to decrease the set cruise speed by 5 mph increments (Detroit Diesel engines only). Single press decreases cruise speed by 1 mph. When cruise control has been set, the driver display static menu in the ICUC shows relevant cruise control icons and the set speed. See Fig.Static Menu, ICUC. The speed memory will be retained until the ignition is turned off.
Static Menu, ICUC

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Gear Indicator
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Gear mode
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Time
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Soft Telltale Area
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Adaptive Cruise Control Following Distance
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Adaptive Cruise Control Telltale
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Cruise Control Set Speed
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Cruise Control Overspeed Amount
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Cruise Control Underspeed Amount
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CNCL Button Press to pause the cruise control, while retaining the speed setting in memory. The cruise control can also be disengaged, while retaining the speed memory, by depressing the brake or clutch pedals.
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Cruise Accelerate/RES Button Press to resume the set speed. Press and hold to increase the set cruise speed by 5 mph increments (Detroit Diesel engines only). Single press increases cruise speed by 1 mph. If no previous set speed is stored, pressing the button sets the cruise speed.