2017 FORD F450 SUPER DUTY tire pressure

Customer action requiredPossible causeLow tire pressurewarning light
Make sure tires are at the proper pres-sure. See Inflating your tires in thischapter. After inflating your tires to themanufacturer’s recommended pressureas shown on the Tire Label (located onthe edge of driver’s door or the B-Pillar),the vehicle must be driven for at leasttwo minutes over 20 mph (32 km/h)before the light turns off.
Tire under inflatedSolid warning light
Repair the damaged road wheel and tireassembly and reinstall it on the vehicleto restore system function. For adescription on how the system functions,see When your temporary spare tireis installed in this section.
Spare tire in use
If the tires are properly inflated and thespare tire is not in use but the lightremains on, contact your authorizeddealer as soon as possible.
Tire pressure monitoringsystem malfunction
On vehicles with different front and reartire pressures, the system must beretrained following every tire rotation.See Tire Care (page 377).
Tire rotation withoutsensor training
Repair the damaged road wheel and tireassembly and reinstall it on the vehicleto restore system function. For adescription on how the system functions,see When your temporary spare tireis installed in this section.
Spare tire in useFlashing warninglight
If the tires are properly inflated and thespare tire is not in use but the lightremains on, contact your authorizeddealer as soon as possible.
Tire pressure monitoringsystem malfunction
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When Inflating Your Tires
When putting air into your tires (such as ata gas station or in your garage), the tirepressure monitoring system may notrespond immediately to the air added toyour tires.
It may take up to two minutes of drivingover 20 mph (32 km/h) for the light to turnoff after you have filled your tires to therecommended inflation pressure.
How Temperature Affects Your TirePressure
The tire pressure monitoring systemmonitors tire pressure in each pneumatictire. While driving in a normal manner, atypical passenger tire inflation pressuremay increase about 2 to 4 psi (14 to 28kPa) from a cold start situation. If thevehicle is stationary overnight with theoutside temperature significantly lowerthan the daytime temperature, the tirepressure may decrease about 3 psi (21kPa) for a drop of 30°F (17°C) in ambienttemperature. This lower pressure valuemay be detected by the tire pressuremonitoring system as being significantlylower than the recommended inflationpressure and activate the system warninglight for low tire pressure.
If the low tire pressure warning light is on,visually check each tire to verify that no tireis flat. If one or more tires are flat, repair asnecessary. Check the air pressure in theroad tires. If any tire is under-inflated,carefully drive the vehicle to the nearestlocation where air can be added to thetires. Inflate all the tires to therecommended inflation pressure.
Tire Pressure Monitoring System ResetProcedure
WARNING
To determine the requiredpressure(s) for your vehicle, see theSafety Compliance CertificationLabel (on the door hinge pillar, door-latchpost or the door edge that meets thedoor-latch post, next to the driver seat) orthe Tire Label on the B-Pillar or the edgeof the driver door.
Note:You need to perform the tire pressuremonitoring system reset procedure aftereach tire rotation.
To provide the vehicle's load carryingcapability, some vehicles require differentrecommended tire pressures in the fronttires as compared to the rear tires. The tirepressure monitoring system equipped onthese vehicles is designed to illuminate thelow tire pressure warning light at twodifferent pressures; one for the front tiresand one for the rear tires.
Since tires need to be rotated to provideconsistent performance and maximum tirelife, the tire pressure monitoring systemneeds to know when the tires are rotatedto determine which set of tires are on thefront and which are on the rear. With thisinformation, the system can detect andproperly warn of low tire pressures.
System reset tips:
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•To reduce the chances of interferencefrom another vehicle, perform thesystem reset procedure at least threefeet (one meter) away from anotherFord Motor Company vehicleundergoing the system reset procedureat the same time.
•Do not wait more than two minutesbetween resetting each tire sensor orthe system will time-out and the entireprocedure will have to be repeated onall four wheels.
•A double horn will sound indicating theneed to repeat the procedure.
Performing the System Reset Procedure(Single Rear Wheel)
Read the entire procedure beforeattempting.
1. Drive the vehicle above 20 mph(32 km/h) for at least two minutes,then park in a safe location where youcan easily get to all four tires and haveaccess to an air pump.
2.Place the ignition in the off position andkeep the key in the ignition.
3. Cycle the ignition to the on positionwith the engine off.
4. Turn the hazard flashers on then offthree times. You must accomplish thiswithin 10 seconds. If the reset modehas been entered successfully, the hornwill sound once, the system indicatorwill flash and a message is shown inthe information display. If this does notoccur, please try again starting at Step2. If after repeated attempts to enterthe reset mode, the horn does notsound, the system indicator does notflash and no message is shown in theinformation display, seek service fromyour authorized dealer.
5. Train the tire pressure monitoringsystem sensors in the tires using thefollowing system reset sequencestarting with the left front tire in thefollowing clockwise order: Left front(driver's side front tire), Right front(passenger's side front tire), Right rear(passenger's side rear tire), Left rear(driver's side rear tire).
6. Remove the valve cap from the valvestem on the left front tire. Decrease theair pressure until the horn sounds.
Note:The single horn chirp confirms thatthe sensor identification code has beenlearned by the module for this position. If adouble horn is heard, the reset procedurewas unsuccessful, and you must repeat it.
7. Remove the valve cap from the valvestem on the right front tire. Decreasethe air pressure until the horn sounds.
8. Remove the valve cap from the valvestem on the right rear tire. Decrease theair pressure until the horn sounds.
9. Remove the valve cap from the valvestem on the left rear tire. Decrease theair pressure until the horn sounds.Training is complete after the hornsounds for the last tire trained (driver'sside rear tire), the system indicatorstops flashing, and a message is shownin the information display.
10.Turn the ignition off. If two short hornbeeps are heard, the reset procedurewas unsuccessful and you mustrepeat it. If after repeating theprocedure and two short beeps areheard when the ignition is turned tooff, seek assistance from yourauthorized dealer.
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11.Set all four tires to the recommendedair pressure as indicated on theSafety Compliance CertificationLabel (affixed to either the door hingepillar, door-latch post, or the dooredge that meets the door-latch post,next to the driver's seating position)or Tire Label located on the B-Pillaror the edge of the driver's door.
Performing the System Reset Procedure(Dual Rear Wheel)
For further information seeUnderstanding Your Tire PressureMonitoring System and refer to DualRear Wheel, earlier in this section.
Read the entire procedure beforeattempting.
1. Drive the vehicle above 20 mph(32 km/h) for at least two minutes,then park in a safe location where youcan easily get to all four tires and haveaccess to an air pump.
2.Place the ignition in the off position andkeep the key in the ignition.
3. Cycle the ignition to the on positionwith the engine off.
4. Turn the hazard flashers on then offthree times. You must accomplish thiswithin 10 seconds. If the reset modehas been entered successfully, the hornwill sound once, the system indicatorwill flash and a message is shown inthe information display. If this does notoccur, please try again starting at Step2. If after repeated attempts to enterthe reset mode, the horn does notsound, the system indicator does notflash and no message is shown in theinformation display, seek service fromyour authorized dealer.
5. Train the tire pressure monitoringsystem sensors in the tires using thefollowing system reset sequencestarting with the left front tire in thefollowing order: Left front (driver's sidefront tire), Right front (passenger's sidefront tire), Right outer rear (passenger'sside rear outer tire), Right inner rear(passenger's side rear inner tire), Leftouter rear (driver's side rear outer tire),Left inner rear (driver's side rear innertire).
6. Remove the valve cap from the valvestem on the left front tire. Decrease theair pressure until the horn sounds.
Note:The single horn chirp confirms thatthe sensor identification code has beenlearned by the module for this position. If adouble horn is heard, the reset procedurewas unsuccessful, and you must repeat it.
7. Remove the valve cap from the valvestem on the right front tire. Decreasethe air pressure until the horn sounds.
8. Remove the valve cap from the valvestem on the right outer rear tire.Decrease the air pressure until the hornsounds.
9. Remove the valve cap from the valvestem on the right inner rear tire.Decrease the air pressure until the hornsounds.
10.Remove the valve cap from the valvestem on the left outer rear tire.Decrease the air pressure until thehorn sounds.
11.Remove the valve cap from the valvestem on the left inner rear tire.Decrease the air pressure until thehorn sounds. Training is completeafter the horn sounds for the last tiretrained, the system indicator stopsflashing, and a message is shown inthe information display.
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12.Turn the ignition off. If two short hornbeeps are heard, the reset procedurewas unsuccessful and you mustrepeat it. If after repeating theprocedure and two short beeps areheard when the ignition is turned tooff, seek assistance from yourauthorized dealer.
13.Set all four tires to the recommendedair pressure as indicated on theSafety Compliance CertificationLabel (affixed to either the door hingepillar, door-latch post, or the dooredge that meets the door-latch post,next to the driver's seating position)or Tire Label located on the B-Pillaror the edge of the driver's door.
Trailer Tire Pressure MonitoringSystem (If Equipped)
Note:Additional equipment may berequired for your vehicle to support trailertire pressure monitoring. See your authorizeddealer for more information.
Note:The trailer tire pressure monitoringsystem is not a substitute for proper tiremaintenance. It is your responsibility tomaintain correct tire pressures at all times.
Note:If a trailer tire is repaired, replaced orbroken down for service, the screw and valveon the trailer tire pressure sensor should bereplaced. See your authorized dealer fordetails.
The trailer tire pressure monitoring systemis an added safety feature that allows youto view your trailer tire pressures throughthe information display. See GeneralInformation (page 111). Tire pressuresensors are mounted into each tire on yourtrailer. The sensors send a message to yourvehicle indicating the current trailer tirepressure.
If the trailer tire pressure monitoringsystem detects that a tire is low, a warningmessage appears in the informationdisplay. The trailer tire pressure statusscreen in the information display highlightsthe tire with a low pressure.
The main function of the trailer tirepressure monitoring system is to warn youwhen your trailer tires need air. It can alsowarn you in the event the system is nolonger capable of functioning as intended.See Information Messages (page 128).
When a Temporary Spare or New Tireis Installed
If you have replaced a trailer tire with a newor spare tire, a warning message appearsand pressure readings are no longerdisplayed for that tire.
To restore the full function of the trailertire pressure monitoring system:
•Have the damaged wheel and tireassembly repaired and remounted toyour trailer.
•Install the trailer tire pressuremonitoring sensor into the new wheeland tire assembly.
•Perform the trailer tire pressuremonitoring system reset procedure.
Trailer Tire Pressure MonitoringSystem Reset Procedure
Note:You need to perform the tire pressuremonitoring system reset procedure aftereach tire rotation, or when a new trailer tirepressure sensor is installed into a trailer tire.
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The trailer tire pressure monitoring systemcan be reset through the menu in theinformation display. See GeneralInformation (page 111). Performing thetrailer setup process also resets the trailertire pressure monitoring system.
CHANGING A ROAD WHEEL
WARNINGS
The use of tire sealant may damageyour tire pressure monitoring systemand should only be used in roadsideemergencies. If you must use a sealant, theFord Tire Mobility Kit sealant should beused. The tire pressure monitoring systemsensor and valve stem on the wheel mustbe replaced by an authorized dealer afteruse of the sealant.
If the tire pressure monitor sensorbecomes damaged, it will no longerfunction. See Tire PressureMonitoring System (page 394).
Note:If your vehicle is equipped with thetire pressure monitoring system, theindicator light will illuminate when the sparetire is in use. To restore the full function ofthe monitoring system, all road wheelsequipped with tire pressure monitoringsensors must be mounted on the vehicle.
If you get a flat tire while driving, do notapply the brake heavily. Instead, graduallydecrease your speed. Hold the steeringwheel firmly and slowly move to a safeplace on the side of the road.
If your vehicle is equipped with the tirepressure monitoring system, have a flatserviced by an authorized dealer in orderto prevent damage to the system sensors.See Tire Pressure Monitoring System(page 394). Replace the spare tire with aroad tire as soon as possible. Duringrepairing or replacing of the flat tire, havethe authorized dealer inspect the systemsensor for damage.
Dissimilar Spare Wheel and TireAssembly Information
WARNING
Failure to follow these guidelinescould result in an increased risk ofloss of vehicle control, injury or death.
If you have a dissimilar spare wheel andtire, then it is intended for temporary useonly. This means that if you need to use it,you should replace it as soon as possiblewith a road wheel and tire assembly thatis the same size and type as the road tiresand wheels that were originally providedby Ford. If the dissimilar spare tire or wheelis damaged, it should be replaced ratherthan repaired.
A dissimilar spare wheel and tire assemblyis defined as a spare wheel and tireassembly that is different in brand, size orappearance from the road tires and wheelsand can be one of three types:
1.T-type mini-spare: This spare tirebegins with the letter T for tire size andmay have Temporary Use Only molded inthe sidewall.
2.Full-size dissimilar spare with labelon wheel: This spare tire has a label onthe wheel that states: THIS WHEEL ANDTIRE ASSEMBLY FOR TEMPORARY USEONLY
When driving with one of the dissimilarspare tires listed above, do not:
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Rear: F-350 dual rear wheel
Rear: F-450 and F-550
Jacking the Vehicle
1. Insert the jack handle into the pumplinkage.
2. Use an up-and-down motion with thejack handle to raise the wheelcompletely off the ground.
Note:Hydraulic jacks are equipped with apressure release valve that prevents liftingloads which exceed the jack's ratedcapacity.
3. Remove the lug nuts with the lugwrench.
4.Replace the flat tire with the spare tire,making sure the valve stem is facingoutward on all front an inboard rearwheels. If you are replacing theoutboard wheel, the valve stem mustbe facing inward. Reinstall the lug nutsuntil the wheel is snug against the hub.Do not fully tighten the lug nuts untilthe wheel has been lowered.
5. Lower the wheel by slowly turning therelease valve counterclockwise.Opening the release valve slowly willprovide a more controlled rate ofdescent.
6. Remove the jack and fully tighten thelug nuts in the order shown. SeeTechnical Specifications (page 413).
7. Stow the flat tire. See Stowing the flator spare tire if the vehicle is equippedwith a spare tire carrier.
8. Stow the jack, jack handle and lugwrench. Make sure the jack is securelyfastened so it does not rattle whendriving.
9. Unblock the wheels.
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7.Repeat this tightness check procedurewhen servicing the spare tire pressure(every six months, per scheduledmaintenance information), or at anytime that the spare tire is disturbed
through service of other components.
8. If removed, install the spare tire lockinto the bumper drive tube with thespare tire lock key and jack handle.
TECHNICAL SPECIFICATIONS
Wheel Lug Nut Torque Specifications
WARNING
When a wheel is installed, always remove any corrosion, dirt or foreign materialspresent on the mounting surfaces of the wheel or the surface of the wheel hub,brake drum or brake disc that contacts the wheel. Make sure that any fastenersthat attach the rotor to the hub are secured so they do not interfere with the mountingsurfaces of the wheel. Installing wheels without correct metal-to-metal contact at thewheel mounting surfaces can cause the wheel nuts to loosen and the wheel to come offwhile the vehicle is in motion, resulting in loss of control.
lb.ft (Nm)Bolt size
165 lb.ft (224 Nm)M14 x 1.5
*Torque specifications are for nut and bolt threads free of dirt and rust. Use only Fordrecommended replacement fasteners.
On vehicles equipped with single rear wheels, retighten the lug nuts to the specified torqueat 100 miles (160 kilometers) after any wheel disturbance (such as tire rotation, changinga flat tire, wheel removal).
On vehicles equipped with dual rear wheels, retighten the wheel lug nuts to the specifiedtorque at 100 miles (160 kilometers), and again at 500 miles (800 kilometers) of newvehicle operation and after any wheel disturbance (such as tire rotation, changing a flattire, wheel removal).
It is important to follow the proper wheel mounting and lug nut torque procedures.
On all two-piece flat wheel nuts, apply one drop of motor oil between the flat washerand the nut. Do not apply motor oil to the wheel nut threads or the wheel stud threads.
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