2003 FORD F350 relay

Locks and Security 65
Keys 65
Locks 65
Anti-theft system 67
Seating and Safety Restraints 72
Seating 72
Safety restraints 77
Air bags 90
Child restraints 99
Driving 110
Starting 110
Brakes 114
Transmission operation 118
Trailer towing 145
Roadside Emergencies 175
Getting roadside assistance 175
Hazard flasher switch 176
Fuel pump shut-off switch 176
Fuses and relays 177
Changing tires 182
Jump starting 193
Wrecker towing 198
Customer Assistance 200
Reporting safety defects (U.S. only) 208
Cleaning 209
Table of Contents
2
ProCarManuals.com

Loaded vehicles, with a higher center of gravity, may handle
differently than unloaded vehicles. Extra precautions, such as
slower speeds and increased stopping distance, should be taken when
driving a heavily loaded vehicle.
AUTOMATIC TRANSMISSION OPERATION (IF EQUIPPED)
Brake-shift interlock
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the ON position unless brake pedal is depressed.
If you cannot move the gearshift lever out of P (Park) with ignition in
the ON position and the brake pedal depressed:
1. Apply the parking brake, turn ignition key to LOCK, then remove the
key.
2. Insert the key and turn it to OFF.Apply the brake pedal and shift
to N (Neutral).
When the key is in the ignition OFF position, the automatic
transmission shift lever can be moved from the P (Park) position
without the brake pedal depressed. To avoid unwanted vehicle
movement, always set the parking brake.
3. Start the vehicle.
If it is necessary to use the above procedure to move the gearshift lever,
it is possible that a fuse has blown or the vehicle’s brakelamps are not
operating properly. Refer toFuses and relaysin theRoadside
emergencieschapter.
Do not drive your vehicle until you verify that the brakelamps
are working.
Always set the parking brake fully and make sure the gearshift is
latched in P (Park). Turn the ignition to the LOCK position and
remove the key whenever you leave your vehicle.
Driving
118
ProCarManuals.com

This switch is located in the front
passenger’s footwell, by the kick
panel access cover.
To reset the switch:
1. Turn the ignition OFF.
2. Check the fuel system for leaks.
3. If no leaks are apparent, reset the
switch by pushing in on the reset
button.
4. Turn the ignition ON.
5. Wait a few seconds and return
the key to OFF.
6. Make another check of leaks.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
Note:Always replace a fuse with one that has the specified amperage
rating. Using a fuse with a higher amperage rating can cause severe wire
damage and could start a fire.
15
Roadside Emergencies
177
ProCarManuals.com

To remove a fuse use the fuse puller
tool provided on the fuse panel
cover.
The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
1 15A* Adjustable pedals
2—Not used
3—Not used
4 20A* Power point - instrument panel
5—Not used
6 20A* Trailer tow turn/stop relay
7 30A* High beam headlamps/Flash to pass
8 15A* Backup lamps (Diesel engine only)
9 20A* Heated mirrors
10 10A* A/C clutch
11 20A* Radio (main)
Roadside Emergencies
179
ProCarManuals.com

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
12 20A* Cigar lighter / OBD II
13 5A* Power mirrors/switches
14 15A* Daytime running lamps (DRL)
15—Not used
16—Not used
17 15A* Exterior lamps
18 20A* Turn lamps/Brake on-off switch (high)
19 10A* Body security module/4x4 module
20 10A* Fuel Injection Control Module (FICM)
relay (Diesel engine only)
21—Not used
22 20A* Engine control
23 20A* Engine control (gasoline engine only),
Climate control (Diesel engine only)
24 2A* Brake pressure switch/Speed control
25 10A* 4-Wheel Anti-lock Brake System (4WABS)
module, Variable Fan Control (VFC)
(Diesel engine only)
26 10A* Air bags
27 15A* Ignition switch Run feed
28 10A* EATC module/Front blower relay coil
29 10A* Customer access
30 15A* Highbeam headlamps
31 15A* Clutch interlock switch (manual
transmissions only), Transmission range
sensor (automatic transmissions only)
then to starter relay coil (all
transmissions), 4x4
32 5A* Radio (start)
33 15A* Front wiper
34 10A* Brake on-off switch
35 10A* Instrument cluster
Roadside Emergencies
180
ProCarManuals.com

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
36 10A* PCM Memory
37 15A* Horn
38 20A* Trailer tow park lamps
39 15A* Trailer tow back-up lamps
40 20A* Fuel pump
41 10A* Instrument cluster
42 15A* Delayed accessory
43 10A* Fog lamps
44—Not used
45 10A* Ignition switch Run/Start feed
46 10A* Left-hand lowbeam
47 10A* Right-hand lowbeam
48—Not used
101 30A** Trailer tow electric brake
102 30A** Door locks/Body security module
103 50A** Ignition switch (gasoline engine only),
FICM power (Diesel engine only)
104 40A** Heated backlight
105 30A** Fuel heater (Diesel engine only)
106 30A** Front wiper main
107 40A** Front blower motor
108—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 battery charge
116 30A** Ignition switch
601 30A CB*** Window motors, Moonroof
Roadside Emergencies
181
ProCarManuals.com

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
602 60A** 4WABS module
210—Not used
211—Backup lamps relay (Diesel engine only)
212—Not used
301—Front blower motor relay
302—Powertrain Control Module (PCM) relay
303—Fuel heater relay (Diesel engine only)
304—Heated backlight relay
305—Trailer tow battery charge relay
306—Delayed accessory relay
307—Starter relay
* Mini Fuses ** Maxi Fuses ***Circuit Breaker
Note: (Diesel engine only)The Fuel Injection Control Module (FICM)
logic 15A mini-fuse is located in the underhood relay block.
CHANGING A FLAT TIRE
If you get a flat tire while driving:
•do not brake heavily.
•gradually decrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowly move to a safe place on the side of the road.
The use of tire sealants is not recommended and may
compromise the integrity of your tires. The use of tire sealants
may also affect your tire pressure monitoring system (if equipped).
Spare tire information
Your vehicle may be 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 may be used on the
spare.
Roadside Emergencies
182
ProCarManuals.com

Power distribution box
(see Fuses) ...............................178
Power door locks ..................65, 70
Power point .................................53
Power steering ..........................117
fluid, checking and adding ....240
fluid, refill capacity ................254
fluid, specifications .........258, 261
Power Windows ...........................53
Preparing to drive your
vehicle ........................................117
R
Radio ..........................20, 22, 25, 29
Relays ........................................177
Remote entry system .................67
illuminated entry ......................70
locking/unlocking doors ...........65
Reverse sensing system ...........126
Roadside assistance ..................175
S
Safety belts (see Safety
restraints) ........................77–81, 83
Safety defects, reporting ..........208
Safety restraints ....................77–83
belt minder ...............................85
cleaning the safety belts ..........89
extension assembly ..................89
for adults .............................78–81
for children ...............................99
lap belt ......................................84
warning light and chime ..........85
Safety seats for children ..........102
Seat belts (see Safety
restraints) ....................................77Seats ............................................72
child safety seats ....................102
cleaning ...................................213
Servicing your vehicle ..............216
Snowplowing .................8, 171–173
Spare tire
(see Changing the Tire) ...........182
Spark plugs,
specifications .....................254, 261
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............8
four-wheel drive
vehicles ............................173–174
utility-type vehicles ....................8
Specification chart,
lubricants ...........................258, 261
Speed control ..............................57
Starting your
vehicle ........................110–111, 113
jump starting ..........................193
Steering wheel
tilting .........................................50
T
Tailgate ........................................64
Tires ...................................247–249
changing ..........................182, 185
checking the pressure ............249
replacing ..................................252
rotating ....................................250
snow tires and chains ............253
tire grades ...............................248
treadwear ................................248
Towing .......................................145
trailer towing ..........................145
wrecker ....................................198
Index
279
ProCarManuals.com