2021 FORD F-150 stop start

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).
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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.
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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.
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Note:
You can display the reason why the
system is not available in the information
display. AUTO-START-STOP –
TROUBLESHOOTING
AUTO-START-STOP –
INFORMATION MESSAGES
A message appears in the information
display if the system requires you to take
action. Action
Condition
Message
Press the brake pedal to
restart the engine.
The system needs to restart
the engine but requires your
confirmation.
Auto StartStop Press Brake
to Start Engine
Press the brake pedal or the
accelerator pedal to restart
the engine.
The system needs to restart
the engine but requires your
confirmation.
Auto StartStop Press a
Pedal to Start Engine
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AUTO-START-STOP –
FREQUENTLY ASKED QUESTIONS
Why does the engine not always
stop when I expect it to?
The system is designed to work in a way
that complements other vehicle systems,
allowing them to operate at optimum
performance.
The system does not stop the engine if:
•
The driver door is open.
• Your vehicle is at high altitude.
• The heated windshield is on.
• The engine is warming up.
• The outside temperature is too low or
too high.
• The battery charge is low.
• The battery temperature is outside the
optimal operating range.
• The engine is required to run to
maintain interior climate and reduce
fogging.
Why does the engine sometimes
restart when I do not expect it to?
The system is designed to work in a way
that complements other vehicle systems,
allowing them to operate at optimum
performance.
The system restarts the engine if:
• You switch the heated windshield on.
• You switch maximum defrost on.
• Your vehicle starts to roll downhill in
neutral.
• The engine is required to run to
maintain adequate brake system
assistance.
• The engine is required to run to
maintain interior climate and reduce
fogging. Can I permanently switch the
system off?
No. The system plays an important role in
reducing the fuel consumption and the CO
2
emissions.
Will the frequent engine starts
cause parts to wear out?
Your vehicle has an enhanced battery and
starter motor that are designed for the
increased number of engine starts.
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4. Hold the fuel pump nozzle in position
A when refueling. Holding the fuel
pump nozzle in position B can affect
the flow of fuel and shut off the fuel
pump nozzle before the fuel tank is full. 5. Operate the fuel pump nozzle within
the area shown. Refer to A for left hand
drive or B for right hand drive. 6. When the pump shuts off, wait five
seconds, then raise the fuel pump
nozzle and slowly remove it.
7. Fully close the fuel filler door. Note:
Do not attempt to start the engine
if you have filled the fuel tank with incorrect
fuel. Incorrect fuel use could cause damage
not covered by the vehicle Warranty. Have
your vehicle immediately checked.
REFUELING YOUR VEHICLE -
HYBRID ELECTRIC VEHICLE (HEV) WARNING: When refueling always
shut the engine off and never allow
sparks or open flames near the fuel tank
filler valve. Never smoke or use a cell
phone while refueling. Fuel vapor is
extremely hazardous under certain
conditions. Avoid inhaling excess fumes. WARNING: The fuel system may
be under pressure. If you hear a hissing
sound near the fuel filler inlet, do not
refuel until the sound stops. Otherwise,
fuel may spray out, which could cause
serious personal injury. WARNING:
Fuel vapor burns
violently and a fuel fire can cause severe
injuries. WARNING:
Keep children away
from the fuel pump. Never let children
pump fuel. WARNING:
Stay outside your
vehicle and do not leave the fuel pump
unattended when refueling your vehicle. WARNING:
Do not pry open the
fuel tank filler valve. This could damage
the fuel system. Failure to follow this
instruction could result in fire, personal
injury or death. WARNING: Do not remove the fuel
pump nozzle from its fully inserted
position when refueling.
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Failure to perform active or manual
regeneration when instructed could result
in a clogged diesel particulate filter. If the
diesel particulate filter fills beyond the
regeneration threshold, your vehicle
disables the ability for active and manual
regeneration. This could result in
irreversible damage your vehicle Warranty
may not cover.
DIESEL PARTICULATE FILTER
REQUIREMENTS
The diesel particulate filter on your vehicle
requires periodic regeneration to maintain
its correct function.
If your journeys meet one of the following
conditions:
•
You drive only short distances.
• You frequently switch the ignition on
and off.
• Your journeys contain a high level of
acceleration and deceleration.
You must carry out occasional trips with
the following conditions to assist the
regeneration process:
• Drive your vehicle in more favorable
conditions, which you will find at higher
vehicle speeds in normal driving, on a
main road or freeway for a minimum
of 20 minutes. This drive may include
short stops that will not affect the
regeneration process.
• Avoid prolonged idling and observe
speed limits and road conditions.
• Do not switch the ignition off.
• Select a suitable gear to ideally
maintain engine speed between 1500
and 3000 RPM. DIESEL PARTICULATE FILTER
MANUAL REGENERATION
WHAT IS DIESEL PARTICULATE
FILTER MANUAL REGENERATION
Diesel particulate filter manual
regeneration allows you to manually start
regeneration of the diesel particulate filter
at idle to clean the filter.
Note:
If you are not sure whether your
vehicle has this feature, contact your
authorized dealer.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
PRECAUTIONS WARNING: Stay clear of the
exhaust tailpipe during regeneration. Hot
exhaust gases can burn you badly.
You may not be able to use manual
regeneration if the service engine soon
warning lamp appears in the information
display.
Note: During the use of manual
regeneration, you may observe a light
amount of white smoke. This is normal.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
REQUIREMENTS
You can use the manual regeneration
feature when a message appears in the
information display and you are not able
to drive in a manner that allows effective
automatic active regeneration or if you
choose to manually start the regeneration
of the diesel particulate filter while the
vehicle is idle.
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(If Equipped)

WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of your
vehicle's emissions system and filters
harmful pollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING: Do not park, idle or
drive your vehicle on dry grass or other
dry ground cover. The emission system
heats up the engine compartment and
exhaust system, creating the risk of fire. WARNING:
The normal operating
temperature of the exhaust system is
very high. Never work around or attempt
to repair any part of the exhaust system
until it has cooled. Use special care when
working around the catalytic converter.
The catalytic converter heats up to a very
high temperature after only a short
period of engine operation and stays hot
after the engine is switched off. WARNING:
Exhaust leaks may
result in entry of harmful and potentially
lethal fumes into the passenger
compartment. If you smell exhaust
fumes inside your vehicle, have your
vehicle inspected immediately. Do not
drive if you smell exhaust fumes.
To avoid damaging the catalytic converter:
• Do not crank the engine for more than
10 seconds at a time.
• Do not run the engine with a spark plug
lead disconnected.
• Do not push-start or tow-start your
vehicle. Use booster cables. See Jump
Starting the Vehicle
(page 486). •
Use the correct fuel.
See Fuel and
Refueling (page 255).
• Do not switch the ignition off when your
vehicle is moving.
• Avoid running out of fuel.
• Have the items listed in scheduled
maintenance information performed
according to the specified schedule.
Note: Do not make any unauthorized
changes to your vehicle or engine. By law,
vehicle owners and anyone who
manufactures, repairs, or services a fleet of
vehicles are not permitted to intentionally
remove an emission control device or
prevent it from working.
CATALYTIC CONVERTER –
TROUBLESHOOTING
CATALYTIC CONVERTER –
WARNING LAMPS
Your vehicle has an on-board diagnostics
system that monitors the emission control
system. If any of the following warning
lamps illuminate, this may indicate that
the on-board diagnostics system has
detected an emission control system
malfunction. Continuing to drive your vehicle may cause
reduced power or the engine to stop.
Failure to respond to a warning lamp may
cause damage that your vehicle Warranty
may not cover. Have your vehicle checked
as soon as possible.
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