operators_manual

If the vehicle drops outside the speed
range, PCC will accelerate the vehicle
back to the minimum PCC speed.
As the vehicle reaches flat ground after the
hill, PCC will maintain the set-speed until
the crest of the next hill.
If the vehicle is equipped with Adaptive
Cruise Control (ACC) and senses traffic
slowing, it will overrule PCC and slow the
vehicle. This event will cancel PCC only if
the service brakes are required to slow the
vehicle. If the service brakes are not used
by ACC to maintain a safe following
distance, PCC will remain engaged and
resume automatically after the ACC event.
NOTE
PCC was calibrated using a loaded ve-
hicle. Your results may vary, depend-
ing on your vehicle's configuration.
PCC Interrupt
There are three conditions that will
automatically deactivate PCC:
• If there is no data for the current
road.
• If the GPS signal is lost.
• If the PCC system detects a fault.
When this happens, the vehicle will revert
to standard cruise control. This CC state
will be standard cruise control which will
maintain the same cruise speed that was
selected for PCC.
Once the system regains GPS signal and
road data, PCC will resume.
NOTE
PCC Map coverage will include most
interstate and state highways. If you
happen to leave a supported roadway,
the PCC will deactivate. Standard
cruise control will automatically step in
to maintain the vehicle speed.
Troubleshooting
The display will show a message if it
detects an error with the PCC system.
PCC faults may result from the
unavailability of map, slope, vehicle
position, etc. To effectively diagnose and
clear the fault codes, the truck must be
taken to your local dealership.
Fuel Economy Savings Not
Achieved
Certain conditions may cause the optimal
vehicle speed, calculated by PCC, to be
overruled. For example, PCC will be
overruled in the following scenarios:
• Greenhouse Gas functionality
• Adaptive Cruise Control Following
Event (if equipped)
• Adaptive Cruise Control Error State
(if equipped)
Disabling Predictive Cruise Control
To disable PCC and enable standard
cruise control, the truck must be taken to
an authorized dealer.
Software Information
The PCC ECU Software version and Map
Data Version number can be found in the
Menu Truck Information on page 77. . It
may take up to two minutes for this
information to be displayed after the truck
has been keyed-on.
PCC Controls
PCC uses the same buttons as Cruise
Control. See Cruise Control on page 142.
DRIVING - Driver Assistance
Y53-6126-1A1 (01/21) 149
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