auxiliary battery FORD F-150 2021 Owners Manual

WHAT ARE THE AUXILIARY
SWITCHES
The auxiliary switchboard on the overhead
console makes aftermarket customization
easier with six prewired switches
connected to the power distribution box.
Each circuit is individually fused for
connection of electrical accessories.
LOCATING THE AUXILIARY
SWITCHES
The auxiliary switchboard on the overhead
console makes aftermarket customization
easier with six prewired switches
connected to the power distribution box.
The circuits are individually fused for
connection of electrical accessories.
The switches have labels for AUX 1 through
AUX 6. They only operate when the ignition
is in the on position, whether the engine is
running or not. We recommend that you
leave the engine running to maintain
battery charge when using the switches
for an extended time or when using higher
current draw accessories. When you turn
on a switch, the indicator light on the
switch illuminates and the circuit provides
power to the device wired to that switch.
Note:
AUX switch 1 operates the off-road
lamps when your vehicle comes with this
option. LOCATING THE AUXILIARY
SWITCH WIRING
There are three sets of blunt-cut and
sealed circuits. Two sets are under the
hood and behind the battery tray, and one
set is inside your vehicle at the passenger
footwell.
The powered set (A) is taped behind the
battery tray and has a red spot tape mark.
The second set (B) is also under the hood.
It is taped behind the battery tray and has
a white spot tape mark. This set routes to
the interior passenger footwell.
Remove the battery and battery tray to
access the underhood circuits.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Auxiliary Switches - Raptor/TremorE220728 E347548 E347399

The interior set is taped on a wire harness
by the passenger side footwell. This set is
the other end of the circuits taped behind
the battery tray, with a white spot tape
mark.
Remove the fuse panel access door in the
kick panel to access the wires. If you do not
see them, you may need to pull them
down.
See Fuses (page 493). See your authorized
dealer for service.
Circuits from the under hood fuse box (A)
are powered. All other circuits (B-E) are
not connected at either end.
Additional information on fuse and relay
locations is available. See Fuses (page
493). See your authorized dealer for service.
IDENTIFYING THE AUXILIARY SWITCH WIRING
The relays are coded as follows: Fuse
Wire Size
Passenger
Footwell
Wire Color
Under-
hoodPass
Through
Wire Color
Power
Distribu- tion Box
10A
1.0 mm²
AUX 1
Violet/Green
AUX 1
Violet/Green
AUX 1
15A
1.0 mm²
AUX 2
Green/Brown
AUX 2
Green/
Brown
AUX 2
15A
1.0 mm²
AUX 3
Green/Blue
AUX 3
Green/Blue
AUX 3
10A
1.0 mm²
AUX 4
Brown
AUX 4
Brown
AUX 4
5A
1.0 mm²
AUX 5
Blue/Orange
AUX 5
Blue/Orange
AUX 5
5A
1.0 mm²
AUX 6
Yellow/
Orange
AUX 6
Yellow/
Orange
AUX 6
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Auxiliary Switches - Raptor/Tremor

Automatic Emergency Braking...............401
Switching Automatic Emergency Braking
On and Off...................................................... 402
What Is Automatic Emergency Braking.............................................................. 401
Automatic Engine Stop - Vehicles With: Keyless Entry and Push Button
Start...............................................................243
How Does Automatic Engine Stop Work................................................................... 243
Overriding Automatic Engine Stop.............244
Switching Automatic Engine Stop On and Off....................................................................... 243
What Is Automatic Engine Stop...................243
Automatic High Beam Control................152 Automatic High Beam Control
Indicators.......................................................... 154
Automatic High Beam Control Limitations........................................................ 153
Automatic High Beam Control Precautions...................................................... 153
Automatic High Beam Control Requirements.................................................. 153
How Does Automatic High Beam Control Work.................................................................... 152
Overriding Automatic High Beam Control............................................................... 154
Switching Automatic High Beam Control On and Off....................................................... 154
Automatic High Beam Control – Troubleshooting.........................................154
Automatic High Beam Control – Information Messages................................. 154
Automatic Locking Mode............................65 Disengaging Automatic Locking
Mode.................................................................... 66
Engaging Automatic Locking Mode..............66
What Is Automatic Locking Mode.................65
When to Use Automatic Locking Mode.................................................................... 65
Automatic Return to Park (P)................286 Automatic Return to Park (P)
Limitations....................................................... 287
How Does Automatic Return to Park (P) Work.................................................................. 286
What Is Automatic Return to Park (P)...................................................................... 286Automatic Transmission............................281
Automatic Return to Park (P)......................286
Automatic Transmission Positions..............281
Manually Shifting Gears.................................. 283
Manual Park Release....................................... 288
Temporary Neutral Mode............................... 285
Automatic Transmission Positions
........281
Drive (D)................................................................. 281
Manual (M)........................................................... 281
Neutral (N)............................................................ 281
Park (P).................................................................. 281
Reverse (R)........................................................... 281
Automatic Transmission Precautions..................................................281
Auto Mode
......................................................188
Auto Mode Indicators....................................... 188
Switching Auto Mode On and Off................188
Switching Dual Mode On and Off................189
Auto-Start-Stop...........................................252 Auto-Start-Stop – Troubleshooting...........253
Auto-Start-Stop Indicators
......................252
Auto-Start-Stop Precautions.................252
Auto-Start-Stop – Troubleshooting........................................253
Auto-Start-Stop – Frequently Asked Questions........................................................ 254
Auto-Start-Stop – Information Messages......................................................... 253
Autounlock.....................................................105 Autounlock Requirements.............................. 105
Switching Autounlock On and Off...............105
What Is Autounlock........................................... 105
Autowipers......................................................143 Adjusting the Sensitivity of the Rain
Sensor
................................................................ 143
Autowipers Settings.......................................... 143
What Are Autowipers........................................ 143
Auxiliary Switches.......................................659
B
Base Warranty
...............................................661
Battery See: Changing the 12V Battery...................... 519
Bed Extender...................................................115 Bed Extender Precautions................................ 115
Using the Bed Extender..................................... 116
Beginning a Voice Interaction................640
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index

V
Vehicle Care...................................................534
Cleaning the Exterior........................................ 535
Cleaning the Interior.......................................... 537
Vehicle Identification Number................619 Locating the Vehicle Identification
Number............................................................. 619
Vehicle Identification Number Overview........................................................... 619
Vehicle Identification..................................619
Vehicle Identification Number......................619
Vehicle Interior - Police Responder.........42
Vehicle Interior - Raptor................................41
Vehicle Interior
................................................40
Vehicle System Updates..........................656
Vehicle Wi-Fi Hotspot................................624
Ventilated Seats
..........................................203
Switching the Ventilated Seats On and
Off...................................................................... 203
Ventilated Seat Precautions.........................203
Ventilation See: Climate Control - Vehicles With:
Automatic Temperature Control.............186
See: Climate Control - Vehicles With: Manual Temperature Control..................................... 191
Venting the Moonroof
.................................167
Viewing the Tire Pressures........................561
Visual Search
...................................................34
Voice Interaction Examples....................640
Voice Interaction
.........................................640
W
Warranty Terms and Conditions
............661
Washer Fluid Specification.......................612
Washers...........................................................145 Adding Washer Fluid......................................... 145
Switching the Courtesy Wipe On and Off........................................................................\
145
Using the Windshield Washer........................ 145
Washer Fluid Specification............................. 145
Washer Precautions.......................................... 145
Washers See: Wipers and Washers................................ 143
Waxing Your Vehicle...................................539
Waypoints......................................................654 Adding a Waypoint........................................... 654Editing Waypoints.............................................
654
What Are the Auxiliary Switches...........659
What Are the Instrument Cluster Indicators.......................................................174
What Are the Instrument Cluster Warning Lamps
...........................................172
What Is 911 Assist...........................................87
What Is a Connected Vehicle.................620
What Is Active Park Assist.......................346
What is a Hybrid Electric Vehicle...........249
What Is Auto-Start-Stop..........................252
What Is Blind Spot Information System.........................................................389
What Is BlueCruise......................................365
What Is Brake Coach....................................181
What Is Cross Traffic Alert.......................393
What Is Cruise Control..............................350
What Is Drive Mode Control......................371
What Is Driver Alert
.....................................407
What Is Ford Protect..................................662
What Is Generator Mode
..........................220
What Is Hill Descent Control...................330
What Is Hill Start Assist
..............................317
What Is MyKey................................................98
What Is On-Board Scale..........................444
What Is Pre-Collision Assist....................396
What Is Remote Start.................................183
What Is Reverse Braking Assist
...............314
What Is Smart Hitch...................................442
What Is Speed Sign Recognition..........409
What Is the 360 Degree Camera...........342
What Is the Cabin Air Filter.......................194
What Is the Catalytic Converter
.............279
What Is the Diesel Particulate Filter...............................................................268
What Is the Electric Parking Brake..........311
What Is the Electronic Locking Differential...................................................301
What Is the Garage Door Opener...........210
What Is the Gross Axle Weight Rating.............................................................413
What Is the Gross Combined Weight Rating.............................................................414
What Is the Gross Vehicle Weight Rating.............................................................413
What Is the High Voltage Battery.........280
What Is the Integrated Trailer Brake Controller.....................................................434
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index