2021 FORD F-150 key

Why do I experience different driving
characteristics?
If you disconnect the battery, your
vehicle may exhibit some unusual
driving characteristics for
approximately 5 mi (8 km) after you
reconnect it. This is because the engine
management system must realign
itself with the engine. You can
disregard any unusual driving
characteristics during this period.
Why can I not start the engine? If you cannot start the engine after 3
attempts, wait 10 seconds and do the
following:
1. Fully press the brake pedal or the clutch pedal.
Note: Make sure that the parking brake is
applied.
Note: Make sure that the transmission is in
park (P) or neutral (N).
2. Fully press the accelerator pedal and hold it there.
3. Press the push button ignition switch.
Note: The engine cranks for a short period
of time and then it stops.
4. Release the accelerator pedal. 5. Press the push button ignition switch. Why does the system not detect a
passive key?
If the system does not detect a passive
key and you are unable to start the
engine, insert the passive key into the
backup position and press the push
button ignition switch to start the
engine. See
Accessing the Passive
Key Backup Position (page 244).
STARTING AND STOPPING THE
ENGINE – FREQUENTLY ASKED
QUESTIONS - DIESEL, VEHICLES
WITHOUT: PUSH BUTTON START
Why is the engine idle speed high when
I am starting the engine? The speed at which the engine idles
immediately after starting is optimized
to minimize vehicle emissions and
maximize cabin comfort and fuel
economy.
Why does the engine not crank? You can only attempt to start the
engine for a limited amount of time
before the starting system temporarily
disables. If you exceed the starting
time limit, a message may appear and
you cannot attempt to start the engine
for at least 15 minutes.
Why do I experience different driving
characteristics? If you disconnect the battery, your
vehicle may exhibit some unusual
driving characteristics for
approximately
5 mi (8 km) after you
reconnect it. This is because the engine
management system must realign
itself with the engine. You can
disregard any unusual driving
characteristics during this period.
Why can I not start the engine? If you cannot start the engine, do the
following:
247
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Starting and Stopping the EngineE321258

1. Fully press the brake pedal or the
clutch pedal.
Note: Make sure that the parking brake is
applied.
Note: Make sure that the transmission is in
park (P) or neutral (N). 2. Turn the key to position III until the
engine starts.
STARTING AND STOPPING THE
ENGINE – FREQUENTLY ASKED
QUESTIONS - DIESEL, VEHICLES
WITH: PUSH BUTTON START
Why is the engine idle speed high when
I am starting the engine? The speed at which the engine idles
immediately after starting is optimized
to minimize vehicle emissions and
maximize cabin comfort and fuel
economy.
Why does the engine not crank? You can only attempt to start the
engine for a limited amount of time
before the starting system temporarily
disables. If you exceed the starting
time limit, a message may appear and
you cannot attempt to start the engine
for at least 15 minutes. Why do I experience different driving
characteristics?
If you disconnect the battery, your
vehicle may exhibit some unusual
driving characteristics for
approximately
5 mi (8 km) after you
reconnect it. This is because the engine
management system must realign
itself with the engine. You can
disregard any unusual driving
characteristics during this period.
Why can I not start the engine? If you cannot start the engine, do the
following:
1. Fully press the brake pedal or the clutch pedal.
Note: Make sure that the parking brake is
applied.
Note: Make sure that the transmission is in
park (P) or neutral (N). 2. Press the push button ignition switch
until the engine starts.
Why does the system not detect a
passive key?
If the system does not detect a passive
key and you are unable to start the
engine, insert the passive key into the
backup position and press the push
button ignition switch to start the
engine. See
Accessing the Passive
Key Backup Position (page 244).
248
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Starting and Stopping the EngineE322354 E321258

WHAT IS A HYBRID ELECTRIC
VEHICLE
A hybrid vehicle has an electric motor and
a high voltage battery combined with a
gasoline engine.
HOW DOES A HYBRID
ELECTRIC VEHICLE WORK
The hybrid vehicle combines electric and
gasoline propulsion to provide optimal
performance and improved efficiency.
HYBRID ELECTRIC VEHICLE
DRIVING CHARACTERISTICS
The gasoline engine starts and stops to
provide power when required and to save
fuel when not needed. When coasting at
low speeds, coming to a stop or standing,
the gas engine normally shuts down and
your vehicle operates in electric-only
mode.
Conditions that may cause the gasoline
engine to start or remain running include:
•
Considerable vehicle acceleration.
• Driving uphill.
• The high voltage battery charge level
is low.
• Heating or cooling the vehicle interior
in high or low outside temperatures.
• The gasoline engine is below normal
operating temperature.
• Towing a trailer.
• Certain selectable drive modes could
cause the engine to run. See Selecting
a Drive Mode (page 373). Use of the
paddle shifters while in drive (D) could
cause the engine to run. Your hybrid vehicle also comes with
standard hydraulic braking and
regenerative braking. Regenerative braking
is performed by your transmission and
captures brake energy and stores it in the
high voltage battery.
You could also notice that your engine
continues to run instead of shutting off
during extended downhill driving. The
engine stays on during this engine braking
but is not using any fuel.
You could also hear a slight whine or
whistle when operating your vehicle. This
is the normal operation of the electric
motor in the hybrid system.
HYBRID ELECTRIC VEHICLE
INDICATORS
When you start your vehicle, a
green READY indicator light
appears in the instrument cluster
letting you know that your vehicle is ready
for driving.
The engine may not start because your
vehicle has a silent key start feature. This
fuel saving feature allows your vehicle to
be ready to drive without requiring the gas
engine to be running.
The indicator remains on when your vehicle
is on, whether the engine is running or not,
to indicate your vehicle is capable of
movement using the electric motor, gas
engine or both.
Typically, the engine does not start unless
the vehicle is cold, a climate control
change is requested or you press the
accelerator pedal.
249
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Hybrid Electric Vehicle Information
(If Equipped)E293827

HYBRID ELECTRIC VEHICLE
INFORMATION –
TROUBLESHOOTING
HYBRID ELECTRIC VEHICLE
INFORMATION – FREQUENTLY
ASKED QUESTIONS
How long is the high voltage battery
system designed to last?
The high voltage battery system is
designed to last the life of your vehicle.
Does the high voltage battery require
maintenance? The high voltage battery does not
require maintenance.
What should I do if the vehicle runs out
of fuel and the high voltage battery is
out of charge? Refuel and start your vehicle normally.
The engine will recharge the high
voltage battery.
Why does the engine sometimes start
at key-on? The vehicle's computer will determine
if an engine start is required at key-on.
It starts the engine when necessary for
cabin heating, windshield defrost, or if
the outside temperature is low.
Can I put E15 or E85 in my vehicle, and
how will it affect my fuel economy? Your hybrid vehicle can use E15 (15%
ethanol, 85% gasoline) fuel, but you
may notice slightly reduced fuel
economy because ethanol contains
less energy per gallon than gasoline.
Your hybrid vehicle is not designed to
use E85 (85% ethanol). Why does it take a long time before the
engine shuts down?
There are several reasons the engine
stays on for an extended amount of
time when you first start it. One
common reason is to make sure that
the emissions components are warm
enough to minimize tailpipe emission.
As the climate gets cooler, the
engine-on time is extended.
Why does my engine stay on when it is
extremely cold outside? In order to make sure that the climate
control system can begin heating the
cabin or defrosting the windshield as
soon as a driver requests it, the engine
coolant temperature has to be kept
sufficiently hot. Keeping the engine on
is required to maintain the correct
coolant temperature.
ECO IDLE
WHAT IS ECO IDLE
Eco idle reduces fuel consumption when
your vehicle is in park (P) and idling for long
periods of time. Eco idle more efficiently
extends the use of features that are
powered by the high voltage battery when
your vehicle is stationary.
HOW DOES ECO IDLE WORK
Eco idle increases the engine idle speed
above normal for a short period of time to
efficiently charge the high voltage battery.
Note: Engine sound and vibration could be
more noticeable.
SWITCHING ECO IDLE ON AND OFF
To switch eco idle on and off use the
touchscreen:
250
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Hybrid Electric Vehicle Information (If Equipped)

WHAT IS AUTO-START-STOP
The system is designed to help reduce fuel
consumption and CO
2 emissions by
stopping the engine when it is idling, for
example at traffic lights.
AUTO-START-STOP
PRECAUTIONS WARNING: Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result in personal
injury or death. WARNING:
Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you open the hood or have any service
or repair work completed. If you do not
switch the ignition off, the engine could
restart at any time. Failure to follow this
instruction could result in personal injury
or death.
SWITCHING AUTO-START-
STOP ON AND OFF
The system turns on when you switch the
ignition on. Press the button to switch the
system off.
Note: OFF
illuminates in the switch.
Note: Deactivating the system using the
button lasts only one key cycle.
Press the button again to switch the
system back on. Note:
The system turns off if it detects a
malfunction. If the system malfunctions,
have your vehicle checked as soon as
possible.
STOPPING THE ENGINE
Stop your vehicle, keep your foot on the
brake pedal and the transmission in drive
(D).
Note: Power assist steering turns off when
the engine stops.
RESTARTING THE ENGINE
Release the brake pedal or press the
accelerator pedal.
A message appears in the information
display if the system requires you to take
action.
AUTO-START-STOP
INDICATORS WARNING:
The system may
require the engine to automatically
restart when the auto-start-stop
indicator illuminates green or flashes
amber. Failure to follow this instruction
could result in personal injury. The Auto-Start-Stop indicator
illuminates green when the
engine stops. It flashes amber
and a message appears when you need to
take action. The Auto-Start-Stop indicator
illuminates gray with a
strikethrough when the system
is not available.
252
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Auto-Start-Stop
(If Equipped) E146361

WHAT IS THE HIGH VOLTAGE
BATTERY
The high voltage battery is a highly
sophisticated lithium ion battery system,
used to store electrified propulsion energy
to power the vehicle.
HIGH VOLTAGE BATTERY
PRECAUTIONS
WARNING: This battery pack
should only be serviced by an authorized
electric vehicle technician. Improper
handling can result in personal injury or
death. WARNING:
Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you open the hood or have any service
or repair work completed. If you do not
switch the ignition off, the engine could
restart at any time. Failure to follow this
instruction could result in personal injury
or death. WARNING:
Do not touch the
electronic ignition system parts after you
have switched the ignition on or when
the engine is running. The system
operates at high voltage. Failure to
adhere to this warning could result in
serious personal injury or death. WARNING:
Keep your hands and
clothing clear of the engine cooling fan.
280
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing High Voltage Battery - Hybrid Electric Vehicle (HEV)

AUTOMATIC TRANSMISSION
PRECAUTIONS
WARNING: Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result in personal
injury or death. WARNING:
Do not use tow/haul
when the road surface is slippery. Failure
to follow this instruction could result in
the loss of control of your vehicle. WARNING:
When your vehicle is
stationary, keep the brake pedal fully
pressed when shifting gears. Failure to
follow this instruction could result in
personal injury, death or property
damage. WARNING:
Do not apply the brake
pedal and accelerator pedal
simultaneously. Applying both pedals
simultaneously for more than a few
seconds will limit engine performance,
which may result in difficulty maintaining
speed in traffic and could lead to serious
injury.
AUTOMATIC TRANSMISSION
POSITIONS
PARK (P)
This position locks the driveline and
prevents the wheels from turning. Come
to a complete stop before putting your
vehicle into and out of park (P). The electric parking brake could apply
when you shift to park (P) without the
brake pedal fully pressed. The electric
parking brake applies when you shift to
park (P) on large slopes. The electric
parking brake releases with the drive away
release function or manually. See Electric
Parking Brake
(page 311).
Note: A warning tone sounds if you open
the driver door and you have not shifted the
transmission selector to park (P).
See
Automatic Return to Park (P) (page 286).
REVERSE (R) WARNING:
Move the transmission
selector lever to reverse (R) only when
your vehicle is stationary and the engine
is at idle speed.
This position allows your vehicle to move
backward. Come to a complete stop
before shifting into and out of reverse (R).
NEUTRAL (N) WARNING:
In neutral (N) your
vehicle is free to roll.
In neutral (N) power is not transmitted to
the driven wheels.
DRIVE (D)
Drive (D) is the normal driving position, and
allows automatic upshifts and downshifts
through all available gears.
MANUAL (M)
To select manual mode press the (M)
button on the shifter.
281
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Automatic Transmission

WHAT IS TRACTION CONTROL
The traction control system helps to avoid
drive wheel spin and loss of traction.
HOW DOES TRACTION
CONTROL WORK
If your wheels begin to spin, the loss of
traction can compromise steering control
and stability of the vehicle. The traction
control system applies the brakes to
individual wheels and when needed,
reduces engine power at the same time to
increase traction.
SWITCHING TRACTION
CONTROL ON AND OFF
WARNING: Operating your vehicle
with the traction control disabled could
lead to an increased risk of loss of vehicle
control, vehicle rollover, personal injury
and death. The traction control system turns on each
time you switch the ignition on.
The button for the stability and traction
control system is on the instrument panel. Press and release the button to switch
traction control off. The stability control
system remains fully active, to switch it off,
press and hold the button for a few
seconds, then release.
When you switch traction control off, a
message and an illuminated icon appear
on the instrument cluster.
Press the switch again to turn the traction
control system back on to normal
operation.
If your vehicle is stuck in mud or snow,
switching traction control off may be
beneficial as this allows the wheels to spin.
Your vehicle may have MyKey restrictions
regarding this feature. See
What Is
MyKey (page 98).
TRACTION CONTROL
INDICATOR
Stability and Traction Control
Indicator If the indicator does not
illuminate when you switch the
ignition on, or remains on when
the engine is running, this indicates a
malfunction. Have your vehicle checked
by an authorized dealer as soon as
possible. The traction control off indicator
illuminates when you switch the
traction control system off, or
when an alternative stability control mode
is selected that requires the traction
control off depending on the drive mode
selected.
319
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Traction ControlE327252 E138639 E130458