2023 FORD SUPER DUTY coolant temperature

We recommend the use of a wheel lift anddollies or flatbed equipment to tow yourvehicle. Vehicle damage could occur iftowed incorrectly, or by any other means.
Front-wheel and rear-wheel drive vehiclesmust have their designated drive wheelsoff the ground regardless of towingdirection. Use tow dollies to preventdamage to the transmission.
All-wheel or four-wheel drive vehiclesrequire that all wheels be off the groundusing a wheel lift and dollies or flatbedequipment. This prevents damage to thetransmission and drive system.
Note:You need to switch on the ignition tounlock the steering.
Note:Make sure you check the steeringcolumn before towing. It could lock if thebattery is dead.
FAIL-SAFE COOLING
WHAT IS FAIL-SAFE COOLING
Fail-safe cooling allows you to temporarilydrive your vehicle before any incrementalcomponent damage occurs due tooverheating.
The fail-safe distance depends on outsidetemperature, vehicle load and terrain.
HOW DOES FAIL-SAFE COOLINGWORK
If the engine reaches a presetover-temperature condition, the engineautomatically switches to alternatingcylinder operation. Each disabled cylinderacts as an air pump and cools the engine.
When this occurs, your vehicle stilloperates, however:
•Engine power is limited.
•The air conditioning system turns off.
Continued operation increases the enginetemperature, causing the engine tocompletely shut down. Your steering andbraking effort increases in this situation.
When the engine temperature cools, youcan re-start the engine.
Note:Have your vehicle checked as soonas possible to minimize engine damage.
DRIVING WHEN FAIL-SAFE MODEIS ACTIVATED
WARNING: Fail-safe mode is foruse during emergencies only. Operateyour vehicle in fail-safe mode only aslong as necessary to bring your vehicleto rest in a safe location and seekimmediate repairs. When in fail-safemode, your vehicle will have limitedpower, will not be able to maintainhigh-speed operation, and maycompletely shut down without warning,potentially losing engine power, powersteering assist, and power brake assist,which may increase the possibility of acrash resulting in serious injury.
WARNING: Do not remove thecoolant reservoir cap when the engine ison or the cooling system is hot. Wait 10minutes for the cooling system to cooldown. Cover the coolant reservoir capwith a thick cloth to prevent thepossibility of scalding and slowly removethe cap. Failure to follow this instructioncould result in personal injury.
Continued operation increases the enginetemperature, causing the engine tocompletely shut down. Your steering andbraking effort increases in this situation.
When the engine temperature cools, youcan re-start the engine. Have your vehiclechecked as soon as possible to minimizeengine damage.
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Your vehicle has limited engine powerwhen in the fail-safe mode, drive yourvehicle with caution. Your vehicle does notmaintain high-speed operation and theengine may operate poorly.
Remember that the engine is capable ofautomatically shutting down to preventengine damage. In this situation:
1.Pull off the road as soon as safelypossible and switch the engine off.
2.If you are a member of a roadsideassistance program, we recommendthat you contact your roadsideassistance service provider.
3.If this is not possible, wait for a shortperiod of time for the engine to cool.
4.Check the coolant level. If the coolantlevel is at or below the minimum mark,add prediluted coolant immediately.
5.When the engine temperature cools,you can re-start the engine. Have yourvehicle checked as soon as possible tominimize engine damage.
Note:Driving your vehicle without repairincreases the chance of engine damage.
FAIL-SAFE COOLING INDICATORS
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone.
A warning lamp illuminates anda message may appear in theinstrument cluster display.
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UNDER HOOD OVERVIEW - 6.7L DIESEL
Battery. See Changing the 12V Battery (page 457).A
Under hood fuse box. See Accessing the Under Hood Fuse Box (page 430).B
Engine oil dipstick. See Engine Oil Dipstick Overview (page 444).C
Secondary fuel filter. See Changing the Fuel Filter (page 453).D
Engine oil filler cap. See Checking the Engine Oil Level (page 444).E
Engine cooling system coolant reservoir - primary high-temperature coolingsystem. See Checking the Coolant Level (page 450).F
Brake fluid reservoir. See Checking the Brake Fluid (page 249).G
Battery. See Changing the 12V Battery (page 457).H
Windshield washer fluid reservoir. See Adding Washer Fluid (page 115).I
Power steering fluid reservoir. See Checking the Hydraulic Power SteeringFluid (page 280).J
Secondary cooling system coolant reservoir. See Checking the Coolant Level(page 450).K
Air filter assembly. See Changing the Engine Air Filter (page 445).L
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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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COOLANT – INFORMATION MESSAGES
Description and ActionMessage
Displays when the engine temperature istoo high. Stop your vehicle as soon as it issafe to do so, switch the engine off andallow it to cool. If the problem persists, haveyour vehicle checked as soon as possible.See Checking the Coolant Level (page450).
High engine temperature Stop safely
CHANGING THE FUEL FILTER
- DIESEL
Your fuel filters must be changed at thecorrect service interval or when you see thelow fuel pressure message appear. Referto scheduled maintenance for the correctservice interval.
CHANGING THE FUEL FILTER
- GASOLINE
Your vehicle has a lifetime fuel filter thatintegrates with the fuel tank. It does notneed regular maintenance or replacement.
DRIVE BELT ROUTING
OVERVIEW - 6.7L DIESEL,
VEHICLES WITH: 110-120V 2KW
PICKUP BED POWER OUTLET/
DUAL GENERATORS
Drivebelt furthest from theengine.A.
Drivebelt closest to the engine.B.
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Tires
•Maintain recommended air pressure.
•To minimize flat spots on the tires,inflate all four tires to therecommended cold pressures listed onthe Safety Compliance Certificationlabel or Tire Label affixed to yourvehicle. When the vehicle is taken outof storage, reset the tire pressures asnecessary to the recommended levelslisted on the Safety ComplianceCertification label or Tire Label affixedto your vehicle.
Note:If you store your vehicle in a locationwith low ambient temperatures, follow theinstructions for care of summer tires.
Brakes
Make sure the brakes and parking brakefully release.
Note:If you intend on parking your vehiclefor an extended period after cleaning thewheels with a wheel cleaner, drive yourvehicle for a few minutes before doing so toreduce the risk of increased corrosion of thebrake discs, brake pads and linings.
REMOVING YOUR VEHICLE
FROM STORAGE
When your vehicle is ready to come out ofstorage, do the following:
•We recommend that you change theengine oil before you use your vehicleagain.
•Wash your vehicle to remove any dirtor grease film build-up on windowsurfaces.
•Check windshield wipers for anydeterioration.
•Check the underhood for any foreignmaterials such as mice or squirrelnests.
•Check the exhaust for any foreignmaterials.
•Check tire pressures and set tireinflation per the Tire Label.
•Check brake pedal operation. Corrodedbrake rotors could cause brake noise.Drive your vehicle and gently apply andrelease the brakes repeatedly over a10-minute drive to reduce the corrosionfrom the brakes.
•Check fluid levels (including coolant,oil and gas) to make sure there are noleaks, and fluids are at recommendedlevels.
•If you remove the battery, clean thebattery cable ends and check fordamage.
Contact an authorized dealer if you haveany concerns or issues.
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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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Multi-Point Inspection
Suspension components for leaks ordamageExhaust system
Steering and linkageExterior lamps operation
Tires including the spare for wear and
proper pressure2Fluid levels1; fill if necessary
Windshield for cracks, chips or pitsFor oil and fluid leaks
Washer spray and wiper operationHalfshaft dust boots
1 Brake, coolant recovery reservoir, automatic transmission and window washer.2If your vehicle has a temporary mobility kit, check the tire sealant expiration Use By dateon the canister. Replace as needed.
Be sure to ask your dealership serviceadvisor or technician about the multi-pointvehicle inspection. It is a comprehensiveway to perform a thorough inspection ofyour vehicle. Your checklist gives youimmediate feedback on the overallcondition of your vehicle.
NORMAL SCHEDULED
MAINTENANCE - DIESEL
Oil Change Reminder
Your vehicle comes with an oil changereminder that determines when you shouldchange the engine oil based on how youuse your vehicle.
Your vehicle lets you know when an oilchange is due by displaying a message inthe instrument cluster display.
The following table provides examples ofvehicle use and its impact on oil changeintervals. It is a guideline only. Actual oilchange intervals depend on several factorsand generally decrease with severity ofuse.
When to Expect the Message Prompting You to Change Your Oil
Vehicle Use and Examplemi (km)
Light
Up to 15,000 mi(24,000 km)
No towing.Primarily highway driving.Flat roads.Moderate temperatures.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled Maintenance