4. Make sure the coupler release lever is in the locked position.
5. Charge the trailer brake system. Set the trailer brakes, with either
the hand valve or tractor protection valve. Pull against the trailer for
an extra check of proper hook-up. Do not pull hard enough to
damage or strain the equipment.
6. Set the tractor parking brakes and fully raise the trailer landing gear.
See theBrakeschapter for proper operation of the parking brake
and trailer brakes.
7. Check the operation of all trailer lights and correct any lights that
may be faulty.
Un-hook
1. Try to keep the tractor and trailer in a straight line.
2. Apply the parking brakes.
3. Lower the trailer landing gear, making sure it is on solid, level
ground. The weight of the trailer is to be on the landing gear.
4. Block the trailer wheels.
5. Disconnect the brake hoses and light cords. Be sure hoses and cords
are clear.
6. Pull coupler release lever to disengage the fifth wheel jaws.
7. Release the tractor parking brakes.
8. Pull out from the trailer slowly, allowing the landing gear to take the
load gradually.
WRECKER TOWING
WARNING:To reduce the risk of personal injury or property
damage when manually releasing the spring brakes, be sure to
block the wheels so the vehicle cannot move once the brakes are
released.
Note:Make sure to connect your vehicle securely to the tow vehicle and
that the tow vehicle’s parking brakes are set before releasing the disabled
vehicle’s spring brakes.
Before moving the disabled vehicle, check for adequate road clearance of
vehicle components. If possible, unload the disabled vehicle before
towing. This reduces any abnormal load to the vehicle components
resulting from the towing procedures. Before towing, make sure to
release the parking brake fully. You can reset the spring-actuated type
parking brake by recharging the air system with at least 64 psi (441 kPa)
of air. If the brake system does not retain air pressure, then you must
release the spring brakes manually. SeeParking brakein theBrakes
chapter.
Towing171
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Relay Center
The relay center is located along the passenger side A-pillar on the right
side of the footwell.
Relay
LocationRelay Description
R1 Spring applied hydraulic release warning chime module or
PCM power VPWR 2, 3 and 4
R2 A/C compressor clutch
R3 Power windows
R4 Flasher (standard/LED)
R5 Upfitter relay 1
R6 Upfitter relay 2
R7 Headlights
R8 Cummins starter lockout
R9 Upfitter relay 3
R10 Starter
R11 DCU (diesel engine only)
R12 Two–speed axle/Differential lock
R13 Door lock
R14 Air tank moisture valve
R15 DRL #1
R16 Heated mirrors
R17 Spare
R18 Upfitter relay 4
R1
R9 R10 R11 R12 R13 R14 R15 R16 R17
R18 R19 R20 R21 R22 R23 R24 R25 R26
R2 R3 R4 R5 R6 R7 R8
194Fuses
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Relay
LocationRelay Description
R19 Shift interlock/EPRNDL display
R20 Selective Catalyst Reduction (SCR) system (NOx) (diesel
engine only)
R21 Run
R22 Door unlock
R23 ABS warning indicator
R24 DRL #2
R25 Park lights
R26 Spare
Trailer Tow Relays (If Equipped)
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 30A* Trailer tow ABS feed (non electric trailer
brake vehicles only)
2 30A* Trailer tow park/marker lamps
3 30A* Trailer tow stop lamps
TRAILER
ABS
TRAILER
STOP
LAMPTRAILER
MARKER
LAMP
TRAILER
TA I L
LAMPNOT
USEDNOT
USED
LH
TURNRH
TURN30A
30A
30A
30A
NOT USED
5 4 32 1 R1R2R5
R6
R3R4R7
R8
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Quality service parts are available through an authorized dealer. If dealer
parts are not used, make sure the replacement parts are of equivalent
quality.
WARNING:The use of inferior parts can adversely affect the
quality and reliability of your vehicle which, in turn, can result in
property damage, personal injury or death.
To avoid damage to your vehicle’s electrical components before electric
welding:
•Disconnect both battery cables.
•Attach the welder ground cable as close as possible to the part being
welded.
•We recommend temporarily removing the component if welding close
to an electrical component.
Follow the checks and services in theScheduled Maintenancechapter.
Have an authorized dealer or service center inspect your vehicle at least
once a year. Remember that regular maintenance and inspections usually
prevent serious problems from developing later.
If the owner or operator of the vehicle is a skilled technician and intends
on performing the vehicle maintenance and service, he is strongly urged
to purchase a service manual.
Electrical System
Periodically inspect electrical connectors on the outside of the cab and
on the engine and frame for corrosion and tightness. Exposed terminals,
such as the fuel sender, cranking motor, alternator and feed-through
studs, should be cleaned and re-coated with a lubricant sealing grease
such as Motorcraft Silicone Brake Caliper Grease and Dielectric
Compound XG-3, or equivalent. This should include the ground cable
connector for batteries, engine and cab as well as the jump-starting stud.
Accessory Feed Connections
Vehicle electrical systems are complex and often include powertrain
components, such as engine and transmission controls, instrument panels
and ABS. While most systems operate on battery voltage (12 volts),
some systems can be as high as 90 volts or as low as five volts. See the
Electrical Circuit Diagram Manuals,available from your vehicle’s
manufacturer, to make sure that any extra body lights and accessory
connections to circuits are both appropriate and not overloaded. Do not
make modifications to any vehicle control system without first contacting
an authorized dealer.
198Maintenance
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Replacing Brake, Tail, Rear Turn Signal, Reverse, and License
Plate Lamp Bulbs
1. Remove the four screws and the
lamp lens from the lamp
assembly.
2. Carefully pull the bulb straight
out of the socket.
3. Reverse the procedure to install
the new bulb.
BULB SPECIFICATION CHART
Replacement bulbs specifications are in the chart below. Headlamp bulbs
must be marked with an authorized D.O.T. for North America and an E
for Europe to make sure lamp performance, light brightness and pattern
and safe visibility. The correct bulbs do not damage the lamp assembly or
void the lamp assembly warranty, and provide quality bulb illumination
time.
Function Number of
BulbsTrade Number
Headlamps 2 H6054
Front turn signal lamps 2 1157
Front sidemarker lamps, parking
lamps2 (amber) 194
Brake lamps, tail lamps, stop lamps,
rear turn signals lamps, license plate
lamps1 (each side) 1157
Back up lamps 2 1156
Front clearance and identification
lamps5 194
Dome lamp 1 105
Note:To replace all instrument panel lights, see an authorized dealer.
Maintenance233
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Engine oil
checking and adding ..............210
dipstick ....................................210
filter, specifications ................272
refill capacities ........................268
specifications ..........................255
Exhaust fumes ............................94
F
Fail safe cooling ........................214
Fan, Engine Cooling .................211
Filter
fuel ...........................................224
Fuel
cap ...........................................108
capacity ...................................268
filler funnel .............................106
filling your vehicle with fuel ..108
octane rating ...................106, 254
quality ......................................104
running out of fuel .................106
safety information relating to
automotive fuels .....................103
Fuses ..........................187–188, 196
G
Gas cap (see Fuel cap) ............108
Gauges ...................................63, 65
H
Hazard flashers .........................178
Headlamps ...................................55
aiming ......................................231
bulb specifications ..................233
daytime running lights .............56
flash to pass ..............................55
replacing bulbs .......................231turning on and off ....................55
Head restraints ...........................80
Heating ........................................76
Hood ..........................................208
I
Ignition .................................93, 254
Information displays ...................73
Instrument panel
cleaning ...................................238
cluster ........................................67
lighting up panel and
interior .......................................56
J
Joining two calls
(multiparty/conference call) ....294
Jump-starting your vehicle ......178
K
Keys
positions of the ignition ...........93
L
Lamps ..........................................55
bulb replacement
specifications chart ................233
daytime running light ...............56
headlamps .................................55
headlamps, flash to pass ..........55
instrument panel, dimming .....56
interior lamps .....................57–58
replacing bulbs .......................231
Lane change indicator (see
Turn signal) .................................57
LATCH anchors ...........................36
380Index
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Lights, warning and indicator ....67
Load limits .................................166
Locks
childproof ..................................40
doors ..........................................52
Lubricant specifications ...........255
Lumbar support, seats ...............84
M
Manual transmission .................122
lubricant specifications ..........255
Media Bluetooth menu options
(adding, connecting, deleting,
turning on/off) ..........................323
Message center ...........................73
warning messages .....................75
Mirrors .........................................59
fold away .............................61–62
side view mirrors (power) .......60
Motorcraft® parts .............234, 272
O
Octane rating ............................106
P
Pairing other phones ................292
Pairing your phone for the first
time ............................................291
Parking brake ....................148, 152
Parts (see Motorcraft®
parts) .........................................272
Phone Bluetooth menu options
(adding, connecting, deleting,
turning on/off) ..........................302
Phone redial ..............................296Playing music (by artist,
album, genre, playlist, tracks,
similar) ......................................320
Power distribution box (see
Fuses) ........................................188
Power door locks ........................52
Power mirrors .............................60
Powerpoint ..................................91
Power steering ..................161, 205
fluid, checking and adding ....222
fluid, refill capacity ................268
fluid, specifications .................255
Power Windows ...........................58
Privacy information ..................288
Putting a call on/off hold .........294
R
Radio ..................................277–278
Single CD ........................277–278
Radio reception .........................275
Rear window defroster ...............76
Receiving a text message .........298
Recommendations for
attaching safety restraints for
children ........................................30
Relays ........................187–188, 192
Remote entry system
locking/unlocking doors ...........51
Roadside assistance ..................177
S
Safety Belt Maintenance ............50
Safety belts (see Safety
restraints) ........................42, 46–47
Safety defects, reporting ..........186
Index381
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V
Vehicle health report ................311
Vehicle Identification Number
(VIN) ..................................272, 274
Vehicle loading ..........................166
Ventilating your vehicle .............94
Voice commands in media
mode ..........................................315
Voice commands in phone
mode ..........................................292W
Warning lights (see Lights) .......67
Washer fluid ..............................224
Water, Driving through .............176
Wheels .......................................249
Windows
power .........................................58
Windshield washer fluid and
wipers ..........................................54
checking and adding fluid .....224
replacing wiper blades ...........228
Wrecker towing .........................171
Index383
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