Peterbilt 579 - Cruise Control

CRUISE CONTROL
4
CRUISE CONTROL
Cruise Control Switch
This vehicle may have cruise control
switches located on the steering wheel
instead of the switches on the dash
board. The instructions are still the
same. See
Steering Wheel Controls
on page
3-73 to determine where the
cruise control
switches are located.
For information
about the Adaptive
Cruise Control,
see Adaptive Cruise
Control on
page 4-36.
• To Turn On:
Press the
ON/OFF button.
• To Turn Off:
Press the
ON/OFF button. Any
previous speed settings are cleared.
Using Cruise
Control While Driving
Setting Cruise
Speed
1. Ensure that
the vehicle speed is
above the minimum cruise control
speed (19 mph (30 km/h) for
PACCAR MX engine and 30 mph
(48 km/h) for Cummins engines)
and the engine speed is above
1100 rpm.
2. Press the
"ON/OFF" button.
3. Accelerate the
vehicle to the
desired cruise speed.
4. Press the
"SET" button to set the
cruise speed.
NOTE
Cruise Control
may not hold the set
speed going down hills. If the speed
increases going down a hill, use the
brakes to slow down. This will cancel
Cruise Control.
Changing the
Cruise Set Speed
For vehicles
with cruise control buttons
on the steering wheel, the cruise
speed may be changed by using the
+/- button. The pressing and holding
the + button will increase speed while
pressing and holding the - button will
decrease speed. For vehicles with
dash mounted cruise control switches,
changing the speed is done through
the "Set/Resume" button. To increase
the speed, press and hold the Set
button. To decrease the speed, press
and hold the "Resume" button.
Cancelling Cruise
Control
You
can cancel cruise control in any
of these ways:
• Tap the brake pedal.
• Tap the clutch pedal.
4-34
Y53-6047–2C (04/13)