2015 FORD SUPER DUTY air suspension

On some Four-wheel drive vehicles, whenthe transfer case is in the N (Neutral)position, the engine and transmission aredisconnected from the rest of the driveline.Therefore, the vehicle is free to roll even ifthe automatic transmission is in P (Park)or the manual transmission is in gear. Donot leave the vehicle unattended with thetransfer case in the N (Neutral) position.Always set the parking brake fully and turnoff the ignition when leaving the vehicle.
Maintenance and Modifications
The suspension and steering systems onyour vehicle have been designed andtested to provide predictable performancewhether loaded or empty. For this reason,we strongly recommend that you do notmake modifications such as adding orremoving parts (i.e. lift kits or stabilizerbars) or by using replacement parts notequivalent to the original factoryequipment.
We recommend that you use caution whenyour vehicle has either a high load or device(i.e. ladder or luggage racks). Anymodifications to your vehicle that raise thecenter of gravity may cause your vehicleto roll over when there is a loss of vehiclecontrol.
Failure to maintain your vehicle correctlymay void the warranty, increase your repaircost, reduce vehicle performance andoperational capabilities and adverselyaffect you and your passenger's safety. Werecommend you frequently inspect yourvehicle's chassis components when yourvehicle is subject to off road usage.
159Super Duty (), enUSAFour-Wheel Drive (If Equipped)

*Avoid fast starts, stops and turns
*Avoid potholes and objects onthe road
*Do not run over curbs or hit thetire against a curb when parking
Highway Hazards
No matter how carefully you drivethere’s always the possibility thatyou may eventually have a flat tireon the highway. Drive slowly to theclosest safe area out of traffic.This may further damage the flattire, but your safety is moreimportant.
If you feel a sudden vibration orride disturbance while driving, oryou suspect your tire or vehiclehas been damaged, immediately
reduce your speed. Drive withcaution until you can safely pulloff the road. Stop and inspect thetires for damage. If a tire isunder-inflated or damaged,deflate it, remove wheel andreplace it with your spare tire andwheel. If you cannot detect acause, have the vehicle towed tothe nearest repair facility or tiredealer to have the vehicleinspected.
Tire and Wheel Alignment
A bad jolt from hitting a curb orpothole can cause the front endof your vehicle to becomemisaligned or cause damage toyour tires. If your vehicle seems topull to one side when you’redriving, the wheels may be out ofalignment. Have an authorizeddealer check the wheel alignmentperiodically.
Wheel misalignment in the frontor the rear can cause uneven andrapid treadwear of your tires andshould be corrected by anauthorized dealer. Front-wheeldrive vehicles and those with anindependent rear suspension mayrequire alignment of all fourwheels.
The tires should also be balancedperiodically. An unbalanced tireand wheel assembly may result inirregular tire wear.
Tire Rotation
WARNING
If the tire label showsdifferent tire pressures for thefront and rear tires and the vehicleis equipped with a tire pressuremonitoring system, then thesettings for the system sensorsneed to be updated. Alwaysperform the system resetprocedure after tire rotation. If thesystem is not reset, it may notprovide a low tire pressurewarning when necessary.
280Super Duty (), enUSAWheels and Tires

If your vehicle is equipped withdual rear wheels it isrecommended that the front andrear tires (in pairs) be rotated onlyside to side. We do notrecommend splitting up the dualrear wheels. Rotate them side toside as a set. After tire rotation,inflation pressures must beadjusted for the tires newpositions in accordance withvehicle requirements.
Sometimes irregular tire wear canbe corrected by rotating the tires.
USING SNOW CHAINS
WARNING
Snow tires must be the same size,load index, speed rating as thoseoriginally provided by Ford. Use ofany tire or wheel not recommended byFord can affect the safety andperformance of your vehicle, which couldresult in an increased risk of loss of vehiclecontrol, vehicle rollover, personal injury anddeath. Additionally, the use ofnon-recommended tires and wheels couldcause steering, suspension, axle, transfercase or power transfer unit failure.
Note:Do not use snow chains on vehicleswith 20 inch wheels and tires.
The tires on your vehicle have all-weathertreads to provide traction in rain and snow.However, in some climates, you may needto use snow tires and cables. If you needto use cables, it is recommended that steelwheels (of the same size andspecifications) be used, as cables may chipaluminum wheels.
Note:The suspension insulation andbumpers will help prevent vehicle damage.Do not remove these components from yourvehicle when using snow tires and chains.
Follow these guidelines when using snowtires and chains:
•If possible, avoid fully loading yourvehicle
•Use only SAE Class S chains.
•Install chains securely, verifying thatthe chains do not touch any wiring,brake lines or fuel lines.
•Drive cautiously. If you hear the chainsrub or bang against your vehicle, stopand retighten the chains. If this doesnot work, remove the chains to preventdamage to your vehicle.
•Remove the tire chains when they areno longer needed. Do not use tirechains on dry roads.
If you have any questions regarding snowchains or cables, please contact yourauthorized dealer.
TIRE PRESSURE MONITORING
SYSTEM
WARNING
The tire pressure monitoring systemis not a substitute for manuallychecking tire pressure. The tirepressure should be checked periodically(at least monthly) using a tire gauge, seeInflating your tires in this chapter. Failureto properly maintain your tire pressurecould increase the risk of tire failure, lossof control, vehicle rollover and personalinjury.
282Super Duty (), enUSAWheels and Tires

Check every six months
Hinges, latches and outside locks for proper operation. Lubricate if necessary.
Parking brake for proper operation.
Safety belts and seat latches for wear and function.
Safety warning lamps (brake, ABS, airbag and safety belt) for operation.
Washer spray and wiper operation. Clean or replace blades as necessary.
Multi-point Inspection
In order to keep your vehicle running right,it is important to have the systems on yourvehicle checked regularly. This can helpidentify potential issues and prevent majorproblems. We recommend having thefollowing multi-point inspection performedat every scheduled maintenance intervalto help make sure your vehicle keepsrunning great.
Multi-point inspection
Horn operationAccessory drive belt(s)
Radiator, cooler, heater and A/C hosesBattery performance
Suspension component for leaks ordamageEngine air filter
Steering and linkageExhaust system
Tires (including spare) for wear and proper
pressure**Exterior lamps and hazard warning systemoperation
Windshield for cracks, chips or pitsFluid levels*; fill if necessary
Washer spray and wiper operationFor oil and fluid leaks
* Brake, coolant recovery reservoir, automatic transmission, power steering and windowwasher.**If your vehicle is equipped with a temporary mobility kit, check the tire sealant expirationUse By date on the canister. Replace as needed.
442Super Duty (), enUSAScheduled Maintenance

Be sure to ask your dealership serviceadvisor or technician about the multi-pointvehicle inspection. It is a comprehensiveway to perform a thorough inspection of
your vehicle. Your checklist gives youimmediate feedback on the overallcondition of your vehicle.
NORMAL SCHEDULED MAINTENANCE
6.2L and 6.8L Gasoline Engines
Every 7500 miles (12000 km) or six months (whichever comes first)
Change engine oil and filter.
Rotate tires*, inspect tire wear and measure tread depth.
Inspect wheels and related components for abnormal noise, wear, looseness or drag.
Perform multi-point inspection (recommended).
*Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheelsonly if unusual wear is noted.
Every 15000 miles (24000 km) or 12 months (whichever comes first)
Inspect automatic transmission fluid level. Consult dealer for requirements.
Inspect brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.
Inspect engine cooling system strength and hoses.
Inspect exhaust system and heat shields.
Inspect front axle and U-joints. Lubricate if equipped with grease fittings (Four-wheeldrive vehicles).
Inspect steering linkage, ball joints, suspension, tie-rod ends, driveshaft and U-joints.Lubricate if equipped with grease fittings.
Other maintenance items
Replace climate-controlled (heated and cooled) seat
filter.*Every 30000 miles (48000km)Replace engine air filter.
Change automatic transmission fluid and filter on 5-speedtransmission. Consult dealer for requirements.Every 60000 miles (96000km)
443Super Duty (), enUSAScheduled Maintenance