2023 FORD SUPER DUTY heating

MANAGING THE COOLANTTEMPERATURE
If you tow a trailer with your vehicle, theengine may temporarily reach a highertemperature during severe operatingconditions, for example ascending a longor steep grade in high ambienttemperatures.
At this time, you may notice the coolanttemperature gauge moves toward the redzone and a message may appear in theinformation display.
WARNING: To reduce the risk ofcrash and injury, be prepared that thevehicle speed may reduce and thevehicle may not be able to acceleratewith full power until the coolanttemperature reduces.
WARNING: If you continue to driveyour vehicle when the engine isoverheating, the engine could stopwithout warning. Failure to follow thisinstruction could result in the loss ofcontrol of your vehicle.
You may notice a reduction in vehiclespeed caused by reduced engine power inorder to manage the engine coolanttemperature. Your vehicle may enter thismode if certain high-temperature andhigh-load conditions take place. Theamount of speed reduction depends onvehicle loading, grade and outsidetemperature. If this occurs, there is noneed to stop your vehicle. You cancontinue to drive. See Fail-Safe Cooling(page 425).
The air conditioning may automaticallyturn on and off during severe operatingconditions to protect the engine fromoverheating. When the coolanttemperature decreases to the normaloperating temperature, the air conditioningturns on.
If the coolant temperature gauge movesfully into the red zone, or if the coolanttemperature warning or service enginesoon messages appear in your informationdisplay, do the following:
1.Stop your vehicle as soon as it is safeto do so. Fully apply the parking brake,shift into park (P) or neutral (N).
2.Leave the engine running until thecoolant temperature gauge needlereturns to the normal position. If thetemperature does not drop afterseveral minutes, follow the remainingsteps.
3.Switch the engine off and wait for it tocool. Check the coolant level.
4.If the coolant level is at or below theminimum mark, add prediluted coolantimmediately.
5.If the coolant level is normal, restartthe engine and continue.
COOLANT – WARNING LAMPS
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone.
A warning lamp illuminates anda message may appear in theinformation display.
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We strongly recommend only using ourgenuine or our authorized re-manufacturedreplacement parts engineered for yourvehicle.
Additives and Chemicals
We do not recommend using chemicals oradditives not approved by us as part ofyour vehicle’s normal maintenance. Pleaseconsult your warranty information.
Oils, Fluids and Flushing
In many cases, fluid discoloration is anormal operating characteristic and, byitself, does not necessarily indicate aconcern or that the fluid needs to bechanged. Have discolored fluids that alsoshow signs of overheating or foreignmaterial contamination checkedimmediately.
Make sure to change the vehicle’s oils andfluids at the specified intervals or inconjunction with a repair. Flushing is aviable way to change fluid for many vehiclesub-systems during scheduledmaintenance. It is critical that systems areflushed only with new fluid that is the sameas that required to fill and operate thesystem or using our approved flushingchemical.
Owner Checks and Services
Make sure you perform the following basicmaintenance checks and inspections.
Check Every Month
The air filter restriction gauge.1
The engine oil level.
Function of all interior and the exterior lights.
The tires including the spare for wear and proper pressure.
The windshield washer fluid level.
The fuel and water separator. Drain if necessary or if indicated by the information display.1
The holes and slots in the tail pipe to make sure they are functional and clear of debris.1
1 Diesel vehicles only.
Check Every Six Months
The battery connections. Clean if necessary.
The body and door drain holes for obstructions. Clean if necessary.
The cooling system fluid level and the coolant system strength.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled Maintenance

If your instrument cluster display resetsprematurely or becomes inoperative, youshould perform the oil change interval atsix months or 5,000 mi (8,000 km) fromyour last oil change. Never exceed one yearor 10,000 mi (16,000 km) between oilchange intervals.
You can drive your vehicle in such a waythat may lead to higher oil consumptionincluding extended time at high enginespeeds, high loads, engine braking, hardcornering maneuvers, track and off-roadusage. Under these conditions, oilconsumption of approximately 1 quart per500 miles (1 liter per 800 km) is possible.Check the engine oil level at every refuelingand adjust to maintain proper levels toavoid engine damage.
You can also drive your vehicle in such away that dilutes and increases the level ofoil by frequent short trips that do not allowthe engine to get to operating temperature,extended idling and low speed driving forlong periods of time.
It is important to rely upon your dealershipto properly diagnose and repair yourvehicle.
We strongly recommend only using ourgenuine or our authorized re-manufacturedreplacement parts engineered for yourvehicle.
Additives and Chemicals
We do not recommend using chemicals oradditives not approved by us as part ofyour vehicle’s normal maintenance. Pleaseconsult your warranty information.
Oils, Fluids and Flushing
In many cases, fluid discoloration is anormal operating characteristic and, byitself, does not necessarily indicate aconcern or that the fluid needs to bechanged. Have discolored fluids that alsoshow signs of overheating or foreignmaterial contamination checkedimmediately.
Make sure to change the vehicle’s oils andfluids at the specified intervals or inconjunction with a repair. Flushing is aviable way to change fluid for many vehiclesub-systems during scheduledmaintenance. It is critical that systems areflushed only with new fluid that is the sameas that required to fill and operate thesystem or using our approved flushingchemical.
Owner Checks and Services
Make sure you perform the following basicmaintenance checks and inspections.
Check Every Month
The air filter restriction gauge.1
The engine oil level.
Function of all interior and the exterior lights.
The tires including the spare for wear and proper pressure.
The windshield washer fluid level.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled Maintenance

H
Headlamp AdjustingSee: Adjusting the Headlamps....................460Headlamps.......................................................117Adjusting the Level of the Headlamps.........117Headlamp Indicators..........................................117Using the High Beam Headlamps.................117Headlamps – Troubleshooting.................117Headlamps – Frequently AskedQuestions...........................................................117Head Up Display............................................147Head Up Display – Troubleshooting...........148Head Up Display Settings..........................147Head Up Display –Troubleshooting.........................................148Head Up Display – InformationMessages..........................................................148Heated Seats.................................................168Heated Seat Precautions................................168Switching the Heated Seats On andOff.......................................................................168HeatingSee: Climate Control - Vehicles With:Automatic Temperature Control..............152See: Climate Control - Vehicles With: ManualTemperature Control....................................156Hill Descent Control....................................277Hill Descent Control –Troubleshooting............................................278Hill Descent Control Indicator..................277Hill Descent Control Precautions...........277Hill Descent Control –Troubleshooting........................................278Hill Descent Control – InformationMessages.........................................................278Hill Descent Control Videos.....................278Hill Start Assist.............................................265Hill Start Assist – Troubleshooting.............265Hill Start Assist Precautions....................265Hill Start Assist –Troubleshooting........................................265Hill Start Assist – InformationMessages.........................................................265Hill Start Assist Videos..............................265Hitches.............................................................359Fifth-Wheel Trailer Hitch.................................361
Hooking Up a Trailer Using aWeight-Distributing Hitch.........................360Installing a Hitch................................................359Hood LockSee: Opening and Closing the Hood.........440Horn....................................................................110How Does 911 Assist Work..........................67How Does Adaptive Cruise Control WithStop and Go Work....................................296How Does Auto Hold Work......................266How Does Blind Spot InformationSystem Work...............................................327How Does Cross Traffic AlertWork...............................................................335How Does Cross Traffic BrakingWork...............................................................262How Does Drive Mode ControlWork.................................................................311How Does Driver Alert Work....................346How Does Easy Entry and ExitWork................................................................90How Does Exit Warning Work.................332How Does Four-Wheel Drive Work.......238How Does Hill Descent ControlWork...............................................................277How Does Hill Start Assist Work...........265How Does Onboard Scales Work..........384How Does Pre-Collision AssistWork..............................................................338How Does Reverse Brake AssistWork..............................................................258How Does Smart Hitch Work..................382How Does Speed Sign RecognitionWork..............................................................348How Does Stability Control Work..........270How Does the 360 Degree CameraWork..............................................................290How Does the Diesel Particulate FilterWork................................................................221How Does the Electronic LockingDifferential Work.......................................245How Does the Lane Keeping SystemWork................................................................317How Does the Rear Occupant AlertSystem Work................................................174How Does the Safety Canopy™Work.................................................................58
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