fuse box FORD F-350 2021 Owners Manual

FUSE SPECIFICATION CHART
Engine Compartment Fuse Box
WARNING: Always disconnect the
battery before servicing high current
fuses. WARNING:
To reduce risk of
electrical shock, always replace the
cover to the power distribution box
before reconnecting the battery or
refilling fluid reservoirs. The engine compartment fuse box is in the
engine compartment. It has high-current
fuses that protect your vehicle's main
electrical systems from overloads.
If you disconnect and reconnect the
battery, you need to reset some features.
See Changing the 12V Battery (page 379).
Replace fuses with the same type and
rating. See Changing a Fuse (page 346).
339
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3. Raise the hood until the lift cylinders
hold it open.
4. To close, lower the hood and make sure that it is closed properly and fully
latched.
UNDER HOOD OVERVIEW - 6.2L Battery. See Changing the 12V Battery (page 379).
A
Engine compartment fuse box. See
Fuse Specification Chart (page 339).
B
Engine oil dipstick. See
Engine Oil Dipstick (page 352).
C
349
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Engine coolant reservoir. See Engine Coolant Check (page 364).
D
Brake fluid reservoir. See
Brake Fluid Check (page 377).
E
Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
F
Battery.
See Changing the 12V Battery (page 379).
G
Power steering fluid reservoir. See
Power Steering Fluid Check (page 378).
H
Engine oil fill cap. See
Engine Oil Check (page 352).
I
Air filter. See
Changing the Engine Air Filter (page 357).
J
UNDER HOOD OVERVIEW - 6.7L DIESEL Battery.
See Changing the 12V Battery (page 379).
A
Engine compartment fuse box.
See Fuse Specification Chart (page 339).
B
Engine oil dipstick.
See Engine Oil Dipstick (page 352).
C
Secondary fuel filter. See
Changing the Engine-Mounted and Diesel Fuel
Conditioner Module Fuel Filters (page 386).
D
Engine oil filler cap.
See Engine Oil Check (page 354).
E
350
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Engine cooling system coolant reservoir - primary high-temperature cooling
system. See Engine Coolant Check (page 364).
F
Brake fluid reservoir.
See Brake Fluid Check (page 377).
G
Battery.
See Changing the 12V Battery (page 379).
H
Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
I
Power steering fluid reservoir. See
Power Steering Fluid Check (page 378).
J
Secondary cooling system coolant reservoir. See Engine Coolant Check
(page
364).
K
Air filter assembly. See
Changing the Engine Air Filter (page 358).
L
Air filter restriction gauge. See
Changing the Engine Air Filter (page 358).
M
UNDER HOOD OVERVIEW - 7.3L Windshield washer fluid reservoir. See
Washer Fluid Check (page 382).
A
Engine coolant reservoir.
See Engine Coolant Check (page 368).
B
Brake fluid reservoir.
See Brake Fluid Check (page 377).
C
Engine compartment fuse box.
See Fuses (page 339).
D
351
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AUXILIARY SWITCHES (IF
EQUIPPED)
For maximum vehicle performance, keep
the following information in mind when
adding accessories or equipment to your
vehicle:
• When adding accessories, equipment,
passengers and luggage to your
vehicle, do not exceed the total weight
capacity of the vehicle or of the front
or rear axle (GVWR or GAWR as
indicated on the Safety Compliance
Certification label). Ask an authorized
dealer for specific weight information.
• The Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulate the use
of mobile communications systems
equipped with radio transmitters, for
example, two-way radios, telephones
and theft alarms. Any such equipment
installed in your vehicle should comply
with Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulations, and
should be installed by an authorized
dealer.
• An authorized dealer needs to install
mobile communications systems.
Improper installation may harm the
operation of your vehicle, particularly
if the manufacturer did not design the
mobile communication system
specifically for automotive use.
• If you or an authorized Ford dealer add
any non-Ford electrical or electronic
accessories or components to your
vehicle, you may adversely affect
battery performance and durability. In
addition, you may also adversely affect
the performance of other electrical
systems in the vehicle. The auxiliary switch option package
provides six switches mounted in the
overhead console. These switches operate
when the vehicle is running or from battery
power, depending on the switchable fuse
AUXF4's location in the upfitter relay box.
We recommend, however, that the engine
remain running to maintain battery charge
when using the auxiliary switches for
extended periods of time or higher current
draws.
Note:
When your vehicle has a diesel
engine, use the auxiliary switches only when
the engine is running. The glow plugs also
drain battery power when the ignition key is
in the on position. Using the auxiliary
switches, even for limited amounts of time,
can cause your battery to drain quickly and
prevent your vehicle from restarting.
When switched on, the auxiliary switches
provide electrical battery power for a
variety of personal or commercial uses.
Switches 1 through 4 provide 25 amps.
Switches 5 and 6 provide 40 amps.
The relay box for the auxiliary switches is
in the rear of the engine compartment,
near the back wall. See your authorized
dealer for service.
The relays are coded as shown:
559
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Heated Exterior Mirrors .....................................
98
Memory Mirrors ................................................... 98
Power Exterior Mirrors........................................ 96
PowerScope ™ Power Telescoping
Mirrors.................................................................. 97
Puddle Lamps....................................................... 98
Spot Lamps........................................................... 98
Telescoping Mirrors.............................................. 97
Trailer Towing Camera System....................... 98
F
Fastening the Seatbelts..............................39
Fastening the Cinch Tongue............................ 40
Seatbelt Locking Modes..................................... 41
Using Seatbelts During Pregnancy...............40
Using the Seatbelt with Cinch Tongue (Front Center Seat on Super Cab and
Crew Cab).......................................................... 39
Flat Tire See: Changing a Road Wheel....................... 429
Floor Mats
.......................................................323
Fog Lamps - Front See: Front Fog Lamps........................................ 89
Foot Pedals See: Adjusting the Pedals................................. 84
Ford Credit
.........................................................15
US Only..................................................................... 15
Ford Protect...................................................563 Ford Protect Extended Service Plan
(CANADA ONLY).......................................... 564
Ford Protect Extended Service Plans (U.S. Only).................................................................. 563
Four-Wheel Drive
..........................................213
Front Axle Fluid Capacity and Specification..............................................466
Front Fog Lamps
............................................89
Front Fog Lamp Indicator................................. 89
Switching the Front Fog Lamps On or Off........................................................................\
. 89
Fuel and Refueling
.......................................184
Fuel Consumption........................................193
Advertised Capacity.......................................... 193
Fuel Economy...................................................... 193
Fuel Filter - 6.2L/7.3L..................................382
Fuel Quality - Diesel.....................................187 Biodiesel................................................................ 188
Diesel Fuel Additives ........................................ 189Fuel Requirements - Choosing The Right
Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Not Required ..........187
Fuel Requirements - Choosing The Right Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Required (United
States/Canada/Puerto Rico/U.S. Virgin
Islands And Other Locales) ...................... 187
Fuel Quality - E85........................................185 Choosing the Right Fuel - Flex Fuel
Vehicles............................................................. 185
Switching Between E85 and Gasoline............................................................ 186
Fuel Quality - Gasoline..............................186 Choosing the Right Fuel.................................. 186
Fuel Shutoff...................................................326
Fuel Tank Capacity - Diesel.....................457
Fuel Tank Capacity - Gasoline...............458
Fuses
................................................................339
Fuse Specification Chart..........................339 Engine Compartment Fuse Box................... 339
Passenger Compartment Fuse Panel.................................................................. 343
G
Garage Door Opener
...................................164
Garage Door Opener See: Universal Garage Door Opener...........164
Gauges ..............................................................
102
DEF Gauge............................................................ 104
Engine Coolant Temperature Gauge..........104
Engine Oil Pressure Gauge............................. 104
Fuel Gauge............................................................ 104
Transmission Fluid Temperature Gauge................................................................. 104
Turbo Boost Gauge............................................ 104
Type 1 and 2.......................................................... 102
Type 3..................................................................... 103
Gearbox See: Transmission.............................................. 207
General Information on Radio Frequencies...................................................55
Intelligent Access................................................. 55
General Maintenance Information.......565 Multi-Point Inspection..................................... 568
Owner Checks and Services......................... 566
Protecting Your Investment........................... 565
653
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