2023 FORD SUPER DUTY heater

Glasses Holder.............................................201
Starting and Stopping theEngine
Starting and Stopping the Engine –Precautions...............................................202
Ignition Switch.............................................202
Push Button Ignition Switch...................203
Starting the Engine....................................203
Engine Block Heater..................................205
Stopping the Engine.................................206
Idle Timer.......................................................207
Automatic Engine Stop...........................208
Accessing the Passive Key BackupPosition......................................................209
Starting and Stopping the Engine –Troubleshooting.....................................209
Starting and Stopping the Engine Videos.........................................................................213
Fuel and Refueling
Fuel and Refueling Precautions.............214
Fuel Quality....................................................214
Running Out of Fuel....................................217
Refueling.........................................................218
Fuel Tank Capacity....................................220
Fuel and Refueling – Troubleshooting........................................................................220
Diesel Particulate Filter
What Is the Diesel Particulate Filter......221
How Does the Diesel Particulate FilterWork..............................................................221
Diesel Particulate Filter Precautions.........................................................................221
Diesel Particulate Filter Requirements........................................................................222
Diesel Particulate Filter ManualRegeneration............................................222
Diesel Particulate Filter –Troubleshooting......................................224
Selective Catalytic ReductionSystem
What Is the Selective CatalyticReduction System..................................226
How Does the Selective CatalyticReduction System Work......................226
Selective Catalytic Reduction SystemPrecautions...............................................226
Selective Catalytic Reduction SystemRequirements..........................................228
Selective Catalytic Reduction SystemGuidelines..................................................228
Filling the Selective Catalytic ReductionSystem Tank.............................................228
Checking the Selective CatalyticReduction System Status...................230
Diesel Exhaust Fluid Capacity andSpecification............................................230
Selective Catalytic Reduction System –Troubleshooting......................................230
Catalytic Converter
What Is the Catalytic Converter............233
Catalytic Converter Precautions...........233
Catalytic Converter – Troubleshooting........................................................................233
Automatic Transmission
Automatic Transmission Precautions........................................................................234
Automatic Transmission Positions......234
Shifting Your Vehicle Into Gear..............235
Automatic Transmission PositionIndicators...................................................235
Manually Shifting Gears...........................235
Using Progressive Range Selection......236
Automatic Transmission AudibleWarnings....................................................236
Power Take-Off...........................................236
Four-Wheel Drive
How Does Four-Wheel Drive Work......238
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMTable of Contents

RESTARTING THE ENGINE AFTERSTOPPING IT - VEHICLES WITH:PUSH BUTTON START
The system allows you to start the enginewithin 10 seconds of switching it off, evenif it does not detect a valid passive key.
Within 10 seconds of switching the engineoff, fully press the brake pedal and pressthe push button ignition switch. After 10seconds, you can no longer start the engineif the system does not detect a validpassive key.
When you start the engine, it remainsrunning until you press the push buttonignition switch, even if your vehicle doesnot detect a valid passive key. If you openand close a door when the engine isrunning, the system searches for a validpassive key.
ENGINE BLOCK HEATER (IF
EQUIPPED)
ENGINE BLOCK HEATERPRECAUTIONS
WARNING: Failure to follow engineblock heater instructions could result inproperty damage or serious personalinjury.
WARNING: Do not use your heaterwith ungrounded electrical systems ortwo-pronged adapters. There is a risk ofelectrical shock.
WARNING: Do not fully close thehood, or allow it to drop under its ownweight when using the engine blockheater. This could damage the powercable and may cause an electrical shortresulting in fire, injury and propertydamage.
We recommend that you do the followingfor a safe and correct operation:
•Use a 16-gauge outdoor extension cordthat is product certified byUnderwriter’s Laboratory (UL) orCanadian Standards Association(CSA). This extension cord must besuitable for use outdoors, in coldtemperatures, and be clearly markedSuitable for Use with OutdoorAppliances. Do not use an indoorextension cord outdoors. This couldresult in an electric shock or become afire hazard.
•Use as short an extension cord aspossible.
•Do not use multiple extension cords.
•Make sure that when in operation, theextension cord plug and engine blockheater cord plug connections are freeand clear of water. This could cause anelectric shock or fire.
•If the engine block heater cord is underthe hood, do not remove the wiringfrom its original location. Do not closethe hood on the extension wiring.
•Park your vehicle in a clean area, clearof combustible materials.
•Firmly connect the engine block heatercord and the extension cord.
•Check the extension cord for heatanywhere when the system has beenoperating for approximately 30minutes.
•Unplug and properly stow the systembefore starting and driving your vehicle.The protective cover seals theterminals of the engine block heatercord plug when not in use.
•Check the engine block heater systemfor proper operation before winter.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMStarting and Stopping the Engine

HOW DOES THE ENGINE BLOCKHEATER WORK
The engine block heater warms the enginecoolant. This allows the climate controlsystem to quickly respond. The equipmentincludes a heater element installed in theengine block and a wire harness. You canconnect the system to a grounded 110 voltAC electrical source.
Note:The engine block heater is mosteffective when outdoor temperatures arebelow 0°F (-18°C). We recommend the useof engine block heater to improve enginecold start performance.
USING THE ENGINE BLOCKHEATER
Make sure the receptacle terminals areclean and dry prior to use. Clean them witha dry cloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hoursof energy per hour of use. The system doesnot have a thermostat. It achievesmaximum temperature afterapproximately three hours of operation.Using the engine block heater longer thanthree hours does not improve systemperformance and unnecessarily useselectricity.
STOPPING THE ENGINE
STOPPING THE ENGINE WHENYOUR VEHICLE IS STATIONARY -VEHICLES WITHOUT: PUSHBUTTON START
1.Shift into park (P).
2.Apply the parking brake.
3.Wait until the engine reaches idlespeed.
4.Turn the key to position 0.
STOPPING THE ENGINE WHENYOUR VEHICLE IS STATIONARY -VEHICLES WITH: PUSH BUTTONSTART
1.Shift into park (P).
2.Apply the parking brake.
3.Wait until the engine reaches idlespeed.
4.Press the push button ignition switch.
STOPPING THE ENGINE WHENYOUR VEHICLE IS MOVING -VEHICLES WITHOUT: PUSHBUTTON START
WARNING: Switching off theengine when your vehicle is still movingresults in a significant decrease inbraking assistance. Higher effort isrequired to apply the brakes and to stopyour vehicle. A significant decrease insteering assistance could also occur. Thesteering does not lock, but higher effort
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMStarting and Stopping the EngineE322405 E357998

After extended operation in mud, sand,water, or similar dirty conditions, inspectthe underbody and clean your vehicle assoon as possible.
If you experience unusual vibration afterdriving in mud, slush or similar conditions,check the wheels for impacted material.Impacted material can cause vibrationswhile driving and wheel imbalance.Remove the material to resolve theproblem.
COLD WEATHER
PRECAUTIONS - 6.7L DIESEL
Winter Grill Cover (If Equipped)
The winter grill cover enhances heaterperformance and will reduce the amountof time it takes to warm the inside of yourvehicle in extremely cold conditions below-0.4°F (-18°C).
The winter grill cover installs over theoutside of the front grill and restricts theair flowing to the engine compartment bycovering the radiator grill openings.
Note:The grill cover must be installed inextremely cold conditions below 10.4°F(-12°C) to prevent possible engine damage.
Usage Guidelines
The winter grill cover should only be usedwhile operating your vehicle in extremelycold temperatures or in heavy snow forextended periods of time. In thesetemperatures, the vehicle does not needa large amount of air to properly cool theengine. During periods of operation whenmore airflow is required to cool the vehicle,the winter grill cover should not be used.
The following usage guidelines will allowadequate airflow for proper radiator andair cooler performance:
•Do not use the cover whentemperatures are above 50.0°F (10°C).Use of the cover in these conditionscould cause your vehicle to overheat.Remove the cover if the vehicleoverheats.
•Do not use the cover above 32.0°F(0°C) if towing a trailer. Your vehiclemay overheat if the cover is used whiletowing a trailer.
•Do not modify the cover.
Installation Instructions
Installation and removal instructions areincluded in the winter grill cover package.Refer to the usage guidelines tounderstand when to use the cover.
The cover will seem undersized during thefirst installation, which is normal. The coverstretches during installation to ensure atight fit. The first installation is bestperformed when the grill cover is warm.
COLD WEATHER
PRECAUTIONS - 6.8L/7.3L
The functional operation of somecomponents and systems can be affectedat temperatures below approximately-13°F (-25°C).
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMDriving HintsE391665

IDENTIFYING THE FUSES IN THE UNDER HOOD FUSE BOX
Protected ComponentRatingItem
Cooling fan 1.50 A1
Heater.50 A2
Heater.50 A3
Heater.50 A4
Four-wheel drive module.30 A9
Compressed natural gasmodule switch.30 A10
Anti-lock brake systempump.60 A12
Passenger power seat.30 A13
Anti-lock brake systemvalve.40 A14
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMFusesE370376

Protected ComponentRatingItem
Body control module RP2bus.30 A15
Trailer tow backup lamps.10 A21
Four-wheel drive system.10 A22
Vehicle power 1.20 A23
Vehicle power 2 (gas).20 A24
Vehicle power 2 (diesel).10 A
Vehicle power 3 (gas).15 A25
Vehicle power 3 (diesel).10 A
Vehicle power 4.20 A26
Vehicle power 5 (gas).10 A27
Vehicle power 5 (diesel).20 A
Diesel exhaust fluid tankheater.15 A29
Diesel exhaust fluid lineheater.15 A30
Glow plug and dosingmodule.15 A31
Rear heated seats.20 A34
Climate controlled seatmodule.30 A36
24 V alternator.5 A37
Powertrain control module.10 A38Transmission controlmodule.
Anti-lock brake system.10 A39
Electronic power assiststeering.10 A40
Blind spot informationsystem.10 A41
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMFuses

ENGINE OIL CAPACITY AND
SPECIFICATION - 6.7L DIESEL
Use oil that meets the definedspecification and viscosity grade.
If you do not use oil that meets the definedspecification and viscosity grade, it couldresult in:
•Component damage that your vehiclewarranty does not cover.
•Longer engine cranking periods.
•Increased emission levels.
•Reduced vehicle performance.
•Reduced fuel economy.
Engine Oil
We recommend Motorcraft motor oil foryour vehicle. If Motorcraft motor oil is notavailable, use motor oil of therecommended viscosity grade that meetsour specification WSS-M2C171-F1. You canfind the list of approved motor oils atwww.motorcraft.com.
Do not use supplemental engine oiladditives because they are unnecessaryand could lead to engine damage that yourvehicle warranty does not cover.
The use of correct oil viscosities for dieselengines is important for satisfactoryoperation. Determine which oil viscositybest suits the temperature range youexpect to encounter for the next serviceinterval from the SAE Viscosity Gradeschart.
Note:An engine block heater isrecommended at temperatures below -9°F(-23°C).
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMCapacities and SpecificationsE327351

Note:If you use your vehicle regularly abovethe altitude of 5,000 ft (1,524 m) and underthe temperature of -4.0°F (-20°C), it isrecommended to use the alternative engineoil.
COOLING SYSTEM CAPACITY
AND SPECIFICATION - 6.7L
DIESEL
Use coolant that meets the definedspecification.
If you do not use coolant that meets thedefined specification, it could result in:
•Component damage that your vehiclewarranty does not cover.
•Reduced vehicle performance.
Note:An engine block heater isrecommended at temperatures below-9°F(-23°C).
Capacities
QuantityVariant
31.7 qt (30 L)Primary cooling system.
33.3 qt (31.5 L)Primary cooling system with auxiliary radi-ator.
8.2 qt (7.8 L)Secondary cooling system with ureainjector cooling.
10.0 qt (9.5 L)Secondary cooling system with ureainjector cooling and cooled compressor.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMCapacities and SpecificationsE240523