Medium Duty Operator's Manual - Peterbilt Motors Company

CONTROLS AND DISPLAY
CAUTION: Operating a vehicle with air suspension
bags either overinflated or underinflated
may cause damage to driveline components. If a
vehicle must be operated under such conditions,
do not exceed 5 mph.
Cruise Control Switch
DASH- AND DOOR-MOUNTED FEATURES
WARNING! Do not operate the cruise control
when operating on road surfaces with poor
traction (wet, icy, or snow covered roads) or in
heavy traffic. Accelerations caused by the
normal operation of the cruise control could
cause you to lose control of the vehicle resulting
in an injury accident.
NOTE: Cruise control functions and features may
vary depending upon which engine you have. For
specific explanation of your cruise control, see
the cruise control or engine manual included with
your vehicle.
The master switch turns the cruise control ON or OFF.
The second switch allows you to SET the desired speed
or RESUME the desired speed after the cruise control
function has been interrupted.
This vehilcle’s electronic system will perform a ‘rationality
check’ every time the vehicle is started. This check is to
ensure that the service brakes are working before allowing
cruise control to function. This safety feature is
designed to ensure that a driver is able to cancel the
Medium Duty (R05/09) Y53-6008A – 53 –