Page 185 of 379

GENERAL DRIVING POINTS
General Information
•
Accelerate smoothly and evenly. Rapid
acceleration increases fuel
consumption without increasing engine
performance.
• When approaching a hill, press the
accelerator smoothly to start the
incline at full power, and then shift
down as needed to maintain vehicle
speed.
• When going down a hill, or long steep
grades, prevent overspeeding of the
engine. Normally, choose the same
gear to descend the hill that you use to
ascend the hill. The engine governor
has no control over engine speed when
it is being pushed by a loaded vehicle.
• Do not operate in a gear that permits
an engine speed more than the
maximum governed speed or high-idle
RPM (no load).
• Always shift to a lower gear at high
altitudes to prevent engine smoking.
Backing Up WARNING: All vehicles have blind
spots. To reduce the risk of severe injury
or property damage, never move your
vehicle to the side or rear or change lanes
without being sure your way is clear on
both sides and to your rear. WARNING:
To reduce the risk of
the possibility of personal injury while
backing up the vehicle, always be sure
your vehicle ’s path is clear. Before backing up your vehicle, be sure you
can do so safely. If anything behind the cab
limits your view, do not rely on mirrors
alone to make sure that your intended path
is clear. If other people are in the vicinity,
have someone standing well behind your
vehicle and outside of your intended path
(visible through an exterior mirror) guide
you as you back up.
Although OSHA or some governmental
regulations may require the use of an
electrical or mechanical back up alarm to
warn bystanders, such an alarm does not
guarantee that the intended path is clear.
When in doubt, get out of your vehicle and
visually check the intended path is clear.
Back up slowly as to allow others time to
move, if necessary.
If you install an electrical back up alarm,
connect it to the backup lamp circuit.
Parking
WARNING:
When parking your
vehicle, do not leave the transmission in
gear; if the key is in the on position and
the vehicle rolls, the engine could start.
Failure to follow these instructions could
result in an unattended vehicle moving,
possibly causing personal injury or
property damage.
Always use the parking brake. When
parking on a grade, block the wheels and
turn the front wheels to one side so that if
your vehicle rolls, the front tires act against
the curb to stop your vehicle. The front
wheels are more effective at stopping a
rolling vehicle than the rear wheels.
182
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Driving Hints
Page 186 of 379

ECONOMICAL DRIVING
Your fuel economy is affected by several
things, such as how you drive, the
conditions you drive under, and how you
maintain your vehicle.
You may improve your fuel economy by
keeping these things in mind:
•
Accelerate and slow down in a smooth,
moderate fashion.
• Drive at steady speeds without
stopping.
• Anticipate stops; slowing down may
eliminate the need to stop.
• Close the windows for high-speed
driving.
• Drive at reasonable speeds. Traveling
at 55 mph (90 km/h) uses 15% less
fuel than traveling at 65 mph
(105 km/h).
• Keep the tires properly inflated and use
only the recommended size.
• Use the recommended engine oil.
• Perform all regularly scheduled
maintenance.
Avoid these actions; they reduce your fuel
economy:
• Sudden accelerations or hard
accelerations.
• Warm up your vehicle on cold
mornings.
• Use the air conditioner.
• Use the speed control in hilly terrain.
• Rest your foot on the brake pedal while
driving.
• Carry unnecessary weight.
Approximately 1 mpg [0.4 km/L] is lost
for every
400 lb (180 kg) of weight
carried.
• Driving with the wheels out of
alignment. Conditions
•
Adding certain accessories to your
vehicle may reduce fuel economy. For
example bug deflectors, rollbars, light
bars, running boards, ski racks or
luggage racks.
• Using fuel blended with alcohol may
lower fuel economy.
• Fuel economy may decrease with lower
temperatures during the first
5–10 mi
(12 –16 km) of driving.
• Driving on flat terrain offers improved
fuel economy as compared to driving
on hilly terrain.
• Transmissions give their best fuel
economy when operated in the top
cruise gear and with steady pressure
on the gas pedal.
COLD WEATHER
PRECAUTIONS
Note: Idling in cold weather does not heat
the engine to its normal operating
temperature. Long periods of idling,
especially in cold weather, can cause a
buildup of deposits which can cause engine
damage.
Changing to a lighter grade engine oil also
makes starting easier under these
conditions. Refer to Engine oil
specifications. See
Engine Oil Capacity
and Specification (page 290).
Diesel fuel is adjusted seasonally for cold
temperatures. Diesel fuel which has not
been properly formulated for the ambient
conditions may gel which can clog the fuel
filters. One indication that the fuel filter(s)
may be clogged is if the engine starts, stalls
after a short time, and then does not
restart. If you have been using biodiesel,
you may need to use a fuel with lower
biodiesel content, try another brand, or
discontinue using biodiesel. Do not use
183
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Avoid driving too fast during the first
1,000 mi (1,600 km). Vary your speed
frequently and change up through the
gears early. Do not labor the engine.
Drive your new vehicle at least
1,000 mi
(1,600 km) before towing a trailer. Make
sure you use the specified engine oil. See
Engine Oil Capacity and Specification
(page
290).
Do not add friction modifier compounds
or special break-in oils during the first few
thousand miles (kilometers) of operation.
These additives may prevent piston ring
seating.
DRIVING THROUGH WATER WARNING:
Do not drive through
flowing or deep water as you may lose
control of your vehicle.
Note: Driving through standing water can
cause vehicle damage.
Note: Engine damage can occur if water
enters the air filter.
Before driving through standing water,
check the depth. Never drive through water
that is higher than the bottom of the wheel
hubs. When driving through standing water, drive
very slowly and do not stop your vehicle.
Your brake performance and traction may
be limited. After driving through water and
as soon as it is safe to do so:
•
Lightly press the brake pedal to dry the
brakes and to check that they work.
• Check that the horn works.
• Check that the exterior lights work.
• Turn the steering wheel to check that
the steering power assist works.
Operation in Standing Water
Ingestion of water into the diesel engine
can result in immediate and severe
damage to the engine. If driving through
water, slow down to avoid splashing water
into the intake. If the engine stalls, and you
suspect ingestion of water into the engine,
do not try to restart the engine. Consult
your dealer for service immediately.
Your fuel tank vents to the atmosphere by
valves on top of the tank and through the
fuel cap. If water reaches the top of the
tank, the valves may pull water into the
fuel tank. Water in the fuel can cause
performance issues and damage the fuel
injection system.
186
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Driving HintsE176913
Page 203 of 379
Protected Component
Rating
Item
Blower motor control.
Upfit - frame.
20 A
3
Starter motor.
30 A
4
Not used.
—
5
Upfitter relay 4.
20 A
6
Not used.
—
8
Not used.
—
10
Not used.
—
12
Run/start spare.
10 A
13
Remote climate control
module relays.
Adaptive cruise control.
10 A
14
Blower motor relay.
10 A
15
Air dryer.
20 A
16
Powertrain control module
- ignition status run power.
10 A
17
Glow plug control module -
ignition status run power
(diesel).
Anti-lock brake system run/
start.
10 A
18
Transmission control
module.
10 A
19
Ignition status run power
(diesel).
Windshield wiper motor.
30 A
20
Not used.
—
21
Not used.
—
22
Alternator 2 (dual alternator
only).
10 A
23
Body control module run
power 2 bus.
40 A
24
200
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses
Page 204 of 379
Protected Component
Rating
Item
Body control module run
power 1 bus.
50 A
25
Not used.
—
26
Body builder battery feed.
20 A
27
Not used.
—
28
Alternator 1 A-Line.
10 A
29
Not used.
—
30
Hydromax pump.
60 A
31
Powertrain control module.
20 A
32
Canister vent solenoid (gas).
20 A
33
Canister purge solenoid
(gas).
Variable cam timing actu-
ator 11 (gas).
Heated exhaust gas oxygen
sensor (gas).
Urea tank power (diesel).
Exhaust gas recirculation
cool bypass valve (diesel).
A/C clutch relay.
10 A
34
Customer access vehicle
power 3 feed.
Variable oil pump (diesel).
Cooling fan (diesel).
Fan clutch (gas).
Exhaust brake switch.
Coil on plug (gas)
20 A
35
Urea tank (diesel).
Glow plug controller
(diesel).
Nitrogen oxide sensor
control module (diesel).
Particulate matter sensor
(diesel).
Fuel volume control value
(diesel).
10 A
36
Fuel pressure regulator
(diesel).
201
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses
Page 205 of 379
Protected Component
Rating
Item
Not used.
—
37
Not used.
—
38
Not used.
—
39
Trailer brake control
module.
30 A
41
Upfit - chassis instrument
panel.
30 A
43
Not used.
—
45
A/C clutch solenoid.
10 A
46
Upfitter relay 1.
40 A
47
Upfitter run and accessory
feed.
20 A
48
Pump electronics module
(gas).
30 A
49
Fuel pump (diesel).
Injector power (gas).
15 A
50
Power point #1.
20 A
51
Not used.
—
52
Trailer tow park lamp.
30 A
53
Not used.
—
54
Upfitter relay 3.
20 A
55
Not used.
—
56
USB power.
5 A
58
U-Haul park lamps.
10 A
59
Dual fuel tank selector
switch (diesel).
10 A
60
Not used.
—
61
Not used.
—
62
Driver seat compressor.
20 A
63
202
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses
Page 206 of 379
Protected Component
Rating
Item
Passenger seat compressor.
20 A
64
Upfit - run activate feed.
10 A
65
Four pack solenoid differen-
tial lock.
10 A
66
Hydromax relay power.
10 A
67
Not used.
—
69
Inverter.
40 A
70
Anti-lock brake system
valves.
30 A
71
Brake on-off switch
(hydraulic brakes).
10 A
72
Stoplamp air pressure
switch 1 and 2 (air brakes).
Not used.
—
73
Heated mirror.
15 A
74
Not used.
—
75
Body control module battery
feed.
60 A
76
Body control module
voltage quality monitor
power feed.
30 A
77
Transmission module
(diesel).
10 A
78
Hydromax pump monitor.
5 A
79
Trailer tow backup signal.
10 A
80
Not used.
—
81
Upfitter switch (factory
location for ignition power).
5 A
82
Upfitter switch (optional
location for power at all
times).
5 A
83
Not used.
—
84
203
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses
Page 208 of 379
Protected Component
Rating
Item
Not used.
—
1
Right-hand and left-hand
front door lock switch.
10 A
2
Telescopic mirror switch.
Right-hand and left-hand
front window switch (two
window units).
Right-hand and left-hand
front window motor.
Inverter.
Power mirror switch.
7.5 A
3
Ancillary translator module.
20 A
4
Not used.
—
5
Not used.
—
6
Smart data link connector
power.
10 A
7
Air brake diagnostic
connector.
Not used.
—
8
205
2022 F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing FusesE145984