2003 FORD SUPER DUTY 4WD

Descend a hill in the same gear you
would use to climb up the hill to
avoid excessive brake application
and brake overheating. Do not
descend in neutral; instead,
disengage overdrive or manually
shift to a lower gear. When
descending a steep hill, avoid
sudden hard braking as you could
lose control. When you brake hard,
the front wheels can’t turn and if
theyaren’t turning, you won’t be
able to steer. The front wheels have to be turning in order to steer the
vehicle. Rapid pumping of the brake pedal will help you slow the vehicle
and still maintain steering control.
If your vehicle has anti-lock brakes, apply the brakes steadily. Do not
“pump” the brakes.
Driving on snow and ice
4WD vehicles have advantages over 2WD vehicles in snow and ice but
can skid like anyother vehicle.
Should you start to slide while driving on snowyor icyroads, turn the
steering wheel in the direction of the slide until you regain control.
Avoid sudden applications of power and quick changes of direction on
snow and ice. Applythe accelerator slowlyand steadilywhen starting
from a full stop.
Avoid sudden braking as well. Although a 4WD vehicle mayaccelerate
better than a two-wheel drive vehicle in snow and ice, it won’t stop any
faster, because as in other vehicles, braking occurs at all four wheels. Do
not become overconfident as to road conditions.
Make sure you allow sufficient distance between you and other vehicles
for stopping. Drive slower than usual and consider using one of the lower
gears. In emergencystopping situations, avoid locking of the wheels. Use
a “squeeze” technique, push on the brake pedal with a steadilyincreasing
force which allows the wheels to brake yet continue to roll so that you
may steer in the direction you want to travel. If you lock the wheels,
release the brake pedal and repeat the squeeze technique. If your vehicle
is equipped with a Four Wheel Anti-Lock Brake System (ABS), apply the
brake steadily. Do not “pump” the brakes. Refer to theBrakessection of
this chapter for additional information on the operation of the anti-lock
brake system.
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122

Never drive with chains on the front tires of 4WD vehicles without also
putting them on the rear tires. This could cause the rear to slide and
swing around during braking.
Tires, Replacement Requirements
Do not use a size and type of tire and wheel other than that
originallyprovided byFord Motor Companybecause it can affect
the safetyand performance of your vehicle, which could result in an
increased risk of loss of vehicle control, vehicle rollover, and/or serious
personal injuryor death.
Make sure all tires and wheels on the vehicle are of the same size, type,
tread design, brand and load-carrying capacity. If you have questions
regarding tire replacement, see an authorized Ford or Lincoln/Mercury
dealer.
If you nevertheless decide to equip your 4WD for off-road use with tires
larger than what Ford Motor Companyrecommends, you should not use
these tires for highwaydriving.
If you use anytire/wheel combination not recommended byFord Motor
Company, it may adversely affect vehicle handling and could cause
steering, suspension, axle or transfer case failure.
Do not use “aftermarket lift kits” or other suspension modifications,
whether or not theyare used with larger tires and wheels.
These “aftermarket lift kits” could adverselyaffect the vehicle’s handling
characteristics, which could lead to loss of vehicle control or rollover and
serious injury.
Tires can be damaged during off-road use. For your safety, tires that are
damaged should not be used for highwaydriving because theyare more
likelyto blow out or fail.
You should carefullyobserve the recommended tire inflation pressure
found on the safetycompliance certification label attached to the left
front door lock facing or door latch post pillar. Failure to follow tire
pressure recommendations can adverselyaffect the wayyour vehicle
handles. Do not exceed the Ford Motor Companyrecommended pressure
even if it is less than the maximum pressure allowed for the tire.
Driving
123

Additional equipment such as snowplow equipment mayeffect
the performance of the air bag sensors increasing the risk of
injury. Please refer to the Body Builders Lay out Book for instructions
about the appropriate installation of additional equipment.
Engine temperature while plowing
When driving with a snowplow, your engine may run at a higher
temperature than normal because the attached snowplow blade will
restrict airflow to the radiator.
If you are driving more than 24 km (15 miles) at temperatures above
freezing, angle the plow blade either full left or full right to provide
maximum airflow to the radiator.
If you are driving less than 24 km (15 miles) at speeds up to 64 km/h
(40 mph) in cold weather, you will not need to worry about blade
position to provide maximum airflow.
4WD operation while plowing
•Shift transfer case to 4x4 LOW (4WD Low) when plowing in small
areas at speeds below 8 km/h (5 mph).
•Shift transfer case to 4x4 HIGH (4WD High) when plowing larger
areas or light snow at higher speeds. Do not exceed 24 km/h
(15 mph).
•Do not shift the transmission from a forward gear to R (Reverse) until
the engine is at idle and the wheels are stopped.
•If the vehicle is stuck, shift the transmission in a steadymotion
between forward and reverse gears. Do not rock the vehicle for more
than a few minutes. The transmission and tires maybe damaged or
the engine can overheat.
It is the owner’s responsibility to avoid engine overheating which
can cause damage.
Refer toTransmission temperature gaugein theInstrument cluster
chapter for transmission fluid temperature information.
Do not spin the wheels at over 35 mph (55 km/h). The tires may
fail and injure a passenger or bystander.
Driving
151

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
40 20A* Fuel pump
41 10A* Instrument cluster
42 15A* Delayed accessory
43 10A* Fog lamps
44 10A* Not used
45 10A* Ignition switch Run/Start feed
46 10A* Left-hand lowbeam
47 10A* Right-hand lowbeam
48 10A* Not used
101 30A** Trailer tow electric brake
102 30A** Door locks/Bodysecuritymodule
103 50A** Ignition switch
104 40A** Not used
105 30A** Injector driver module (Diesel engine only)
106 30A** Front wiper main
107 40A** Front blower motor
108 40A** Not used
109 30A** Heated seats
110 50A** Ignition switch
111 30A** 4WD/Shift on the fly
112 30A** Left-hand power seats
113 30A** Starter motor
114 30A** Right-hand power seats
115 20A** Trailer tow batterycharge
116 30A** Ignition switch
601 30A CB*** Door window motors
602 60A** 4WABS module
210 — Not used
211 — Not used
212 — Not used
301 — Front blower motor relay
Roadside Emergencies
158

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
302 — Powertrain (EEC) relay
303 — Injector driver module relay(Diesel engine
only)
304 — Not used
305 — Trailer tow batterycharge relay
306 — Delayed accessory relay
307 — Starter relay
* Mini Fuses ** Maxi Fuses ***Circuit Breaker
CHANGING A FLAT TIRE
If you get a flat tire while driving:
•do not brake heavily.
•graduallydecrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowlymove to a safe place on the side of the road.
The use of tire sealants is not recommended and may
compromise the integrityof your tires. The use of tire sealants
may also affect your tire pressure monitoring system (if equipped).
Spare tire information
Your vehicle maybe equipped with a spare tire that can be used as
either a spare or a regular tire. The spare tire is not equipped with wheel
trim. The wheel trim from the original wheel/tire maybe used on the
spare.
If your vehicle is equipped with 4WD, a spare tire of a different
size than the road tires should not be used. Use of such a tire
could result in damage to driveline components and an increased risk
of loss of vehicle control, vehicle rollover, personal injuryor death.
If your vehicle is equipped with a tire pressure monitoring
system, refer to Tire Pressure Monitoring System (if equipped)
in the Maintenance and specifications section for important information
before changing your tires. If the tire pressure monitoring system
becomes damaged, it will no longer function.
Roadside Emergencies
159

3. Fullyinsert the jack handle
through the bumper hole and into
the guide tube. The keyand lock
will engage with a slight push and
counterclockwise turn. Some
resistance will be felt when turning
the jack handle assembly.
4. Turn the handle counterclockwise
and lower the spare tire until you
can slide the tire rearward and the
cable is slack.
5. Remove the retainer through the center of the wheel.
Tire change procedure
1. Park on a level surface, activate
hazard flashers and set the parking
brake.
•Automatic transmission: Place
gearshift lever in P (Park).
•Manual transmission: Place
gearshift lever in R (Reverse).
•Electronic Shift On the Fly4WD:
Place transfer case in any
position.
•Manual shift transfer case 4WD:
Place transfer case in 2H, 4H or
4L.
To prevent the vehicle from
moving when you change a
tire, be sure the parking brake is
set, then block (in both
directions) the wheel that is
diagonallyopposite (other side
and end of the vehicle) to the tire
being changed.
2. Turn engine off and block the diagonallyopposite wheel (block not
provided).
Roadside Emergencies
161

An alternative for towing a 4x4 vehicle is to:
•put the transfer case in neutral. On manual 4WD systems, put the
4WD shift lever in N (Neutral); on electronic shift on the fly4WD
systems, press the 2WD portion of the 4WD control.
•unlock the front hub locks (refer toFour wheel drive [4WD]
Operation [if equipped]in theDrivingchapter).
•lift the rear wheels of the vehicle using a wheel lift or a sling belt with
T-hooks.
If the vehicle is towed by other means or incorrectly, vehicle
damage may occur.
Ford Motor Companyproduces a towing manual for all authorized tow
truck operators. Have your tow truck operator refer to this manual for
proper hook-up and towing procedures for your vehicle.
Roadside Emergencies
174