Page 1 of 248
Introduction 4
Instrumentation 9
Warning and control lights 9
Gauges 15
Entertainment Systems 20
AM/FM stereo 20
AM/FM stereo cassette 20
AM/FM stereo cassette with CD 32
AM/FM stereo with CD 40
Climate Controls 56
Heater only 56
Manual heating and air conditioning 57
Lights 61
Headlamps 61
Turn signal control 63
Driver Controls 68
Windshield wiper/washer control 68
Steering wheel adjustment 69
Power windows 74
Mirrors 75
Speed control 76
Table of contents
1
Page 13 of 248
Range inhibit
Illuminates when the transmission is
not engaged in the selected gear.
The warning light will go off when
the gearshift lever is adjusted in to
the appropriate gear.
Refer to the Transmission Operator’s Manual for more information.
Charging system (if equipped)
Illuminates when the ignition is
turned to the ON position and the
engine is off, or an over voltage
condition requiring electrical system service.
Wait to start
Indicates the air intake heater is in
operation and special starting
procedures are required. Refer to
theDrivingchapter.
If equipped with an air intake heater, DO NOT use ether or any
other starting fluids. The use of starting fluids (ether) in an
engine equipped with an air intake heater could result in damage
and/or personal injury.
RANGE
INHIBIT
WAIT
TO
START
Instrumentation
13
Page 56 of 248

HEATER ONLY SYSTEM (IF EQUIPPED)
Fan speed control
Controls the volume of air circulated
in the vehicle.
Temperature control knob
Controls the temperature of the
airflow inside the vehicle. On
heater-only systems, the air cannot
be cooled below the outside
temperature.
Mode selector control
Controls the direction of the airflow
to the inside of the vehicle.
•
(Panel)–Distributes outside air through the instrument panel
registers.
•OFF–Outside air is shut out and the fan will not operate. For short
periods of time only, use this mode to prevent undesirable odors from
entering the vehicle.
•
(Panel and floor)–Distributes outside air through the
instrument panel registers and the floor ducts.
•
(Floor)–Distributes outside air through the floor ducts.
•
(Floor and defrost)–Distributes outside air through the floor
ducts and the windshield defroster ducts.
•
(Defrost)–Distributes outside air through the windshield
defroster ducts. It can be used to clear ice or fog from the windshield.
OFF
OFF
Climate Controls
56
Page 72 of 248

Compass calibration adjustment
Perform this adjustment in an open area free from steel structures and
high voltage lines.
For optimum calibration, turn off all electrical accessories (heater/air
conditioning, wipers, etc.) and make sure all vehicle doors are shut.
1. Locate the controls located in the overhead console.
2. Start the vehicle.
3. Press and hold both controls.
After approximately eight seconds,
the compass will enter CAL mode.
CAL mode is indicated when the
display lights the“CAL”indicator.
4. Release both controls. The display
will return to normal, except that
the CAL indicator will remain lit
until the compass is sucessfully
calibrated.
5. Slowly drive the vehicle in a circle (less than 5 km/h [3 mph]) until
the CAL indicator turns off. It may take up to five circles to complete
calibration.
6. The compass is now calibrated.
Trailer hook up lamps—F650 SuperCrewzer only
Press the control to activate the
trailer lamps.
Press the control to deactivate the
trailer lamps.
RESET MODEE/M
Driver Controls
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Page 109 of 248

STARTING PROCEDURES
Operating precautions
•Always shift to a lower gear at high altitudes to prevent engine
smoking.
•Avoid extended and unnecessary idling.
Diesel engine vapors are combustible. Do not operate the engine
in an enclosed area. These vapors can be sucked through the air
intake system and cause engine acceleration and overspeeding, which
may result in bodily injury and extensive property damage. The
equipment owner and operator are responsible for safe operation in a
hostile environment.
Starting the engine
1. Ensure headlamps and all accessories are turned off, the parking
brake is applied and the transmission is in the neutral position (or P
[Park] for Allison 2400 transmissions).
If your vehicle is equipped with an
air intake heater, the heater will
activate in cooler weather. If the
Wait to startlight illuminates,do
notcrank the engine until the light
goes off.
If equipped with an air intake heater, DO NOT use ether or any
other starting fluids. The use of starting fluids (ether) in an
engine equipped with an air intake heater could cause an explosion
and result in vehicle damage, property damage and/or personal injury.
2. Do not depress the accelerator during starting the engine.
3. Start the engine.
If the engine does not start after 30 seconds of cranking, allow two
minutes for the starter to cool before trying again. Excessive cranking
may damage the starter.
After the engine starts:
WAIT
TO
START
Driving
109
Page 110 of 248

•On some engines, theWait to
startlight should illuminate after
the engine starts. Allow the
engine to idle about three
minutes or until the engine
coolant temperature gauge begins to rise. Maintain idle speed until the
Wait to startlight cycles off to indicate the air intake heater has shut
off (approximately six minutes). Operating the engine at higher
speeds will reduce the effectiveness of the air inlet heater.
•Do not increase engine speed
until the oil pressure gauge
indicates normal pressure.
•Ensure engine oil pressure is
indicated on the gauge within 15
seconds after starting.
•Idle the engine for three to five
minutes before operating with a
full load.
•Try to limit engine idle to 10 minutes. Excessive idling reduces fuel
economy.
•When starting a cold engine, increase the engine speed (RPM) slowly
to make sure adequate lubrication is available to the bearings.
Restarting after running out of fuel
The fuel system may need to be purged of air, refer toRunning out of
fuelin theMaintenance and specificationschapter.
Cold weather starting
Perform the following to assure efficient starting in cold weather:
•Use the proper grade oil for your climate. Refer to your engine
operator’s manual for proper grade oil.
•Test the battery more frequently to assure ample power for starting.
•All electrical connections should be tight and in good condition to
prevent losses through loose or corroded connections.
Using the engine block heater (if equipped)
Use of an engine block heater is strongly recommended if you live in a
region where temperatures reach -23°C (-10°F) or below. For best
results, plug the heater in at least three hours before starting the vehicle.
The heater can be plugged in the night before starting the vehicle.WAIT
TO
START
L
H
Driving
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To prevent electrical shock, do not use your heater with
ungrounded electrical systems or two-pronged (cheater)
adapters.
Operating the engine
Do not operate the engine at full throttle below peak torque engine
speed (RPM) for more than one minute at a time (peak torque RPM
varies from 1200-1500 RPM depending on engine rated speed).
Monitor the oil pressure and coolant
temperature gauges frequently.
If the gauges indicate any reading is
not in the normal operating range,
stop your vehicle as soon as possible,
shut the engine off and check the
appropriate fluid level. If an
overheating condition starts to occur,
release the throttle pressure or shift
the transmission into a lower gear, or
both, until the temperature returns to normal operating range.
Continuous operation with low
coolant temperature, below 60°C
(140°F) or high coolant temperature
100°C (212°F) can damage the
engine.
Most failures give some kind of early
warning. Look and listen for changes
in performance, sound or engine
appearance that can indicate service
or engine repair is needed. Some
changes to look and/or listen for:
•Engine misfires
•Loss of power
•Sudden changes in engine operating temperature or oil pressure
•Excessive smoke
•Fuel, oil or coolant leaks
•Vibration
•Increased oil or fuel consumption
L
H
H
C
Driving
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Page 154 of 248
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
15 10A GEM, Interior lamp relay, Map
lamps, Glove box lamps
(SuperCrewzer only), Power
mirrors (SuperCrewzer only),
Warning chime module
(SuperCrewzer only)
16 15A Highbeams
17—Not used
18 5A Headlamp switch, GEM
19 15A Engine, Cluster, Cummins PCM,
CAT PCM, 7.3L Power Stroke
PCM (idle valid switch input),
Alternator (Ambulance only)
20 15A Starter relay, GEM
21 10A DRL
22 15A Exhaust brake (SuperCrewzer
only), Heated mirrors
(SuperCrewzer only), Rear air
suspension (SuperCrewzer and
Ambulance)
23 10A Electronic flasher
24 15A Vacuum pump, Air dryer, ABS,
Fuel heater relay
25 10A Blower motor relay
26 10A Right-hand low beam headlamp
27—Not used
28 10A Left-hand low beam headlamp
Roadside Emergencies
154