2014 FORD F250 SUPER DUTY Owners Manual

LIMITED SLIP DIFFERENTIAL
This axle provides added traction onslippery surfaces, particularly when onewheel is on a poor traction surface. Undernormal conditions, the limited-slip axlefunctions like a standard rear axle. The axlemay exhibit a slight noise or vibrationduring tight turns with low vehicle speed.This is normal behavior and indicates theaxle is working.
ELECTRONIC LOCKING
DIFFERENTIAL
Note:The electronic locking differential isfor off-road use only and is not for use ondry pavement. Using the electronic lockingdifferential on dry pavement will result inincreased tire wear, noise and vibration.
The electronic locking differential is adevice housed in the rear axle that allowsboth rear wheels to turn at the samespeed. The electronic locking differentialcan provide additional traction should yourvehicle become stuck. You can activatethe differential electronically and shift iton the fly within the differential operatingspeed range. The differential is for use inmud, rocks, sand, or any off-road conditionwhere you need maximum traction. It isnot for use on dry pavement.
The following conditions will affect theelectronic locking differential:
•On 2WD vehicles and 4WD vehicles in2H (4X2) or 4H (4X4 High), the ELDwill not engage if the vehicle speed isabove 20 mph (32 km/h).
•On 2WD vehicles and 4WD vehicles in2H (4X2) or 4H (4X4 High), the ELDwill automatically disengage at speedsabove 25 mph (40 km/h) and willautomatically reengage at speedsbelow 20 mph (32 km/h).
•On 4WD vehicles in 4L (4X4 Low), theELD can be engaged at any speed andwill not automatically disengage.
Activating the Electronic LockingDifferential (If Equipped)
Note:Do not use electronic lockingdifferential on dry, hard surfaced roads.Doing so will produce excessive noise,vibration and increase tire wear.
Note:If the electronic locking differentialhas difficulty disengaging, release theaccelerator pedal and turn the steeringwheel in the opposite direction while rolling.
For vehicles equipped with anelectronic shift 4WD system
Pull the 4WD control knob toward you.
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For 2WD vehicles and vehiclesequipped with a manual shift 4WDsystem
Turn the control to ON.
Once the indicator lightilluminates in the informationdisplay, both rear wheel axleshafts will be locked together providingadded traction.
If the indicator does not come on, or theindicator turns off while driving, one of thefollowing has occurred:
•The vehicle speed is too high.
•The left and right rear wheel speeddifference is too high during anengagement attempt.
•The system has malfunctioned and isaccompanied by CHECK LOCKINGDIFFERENTIAL in the informationdisplay. See your authorized Forddealer for assistance.
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GENERAL INFORMATION
Note:Occasional brake noise is normal. Ifa metal-to-metal, continuous grinding orcontinuous squeal sound is present, thebrake linings may be worn-out. Have thesystem checked by an authorized dealer. Ifyour vehicle has continuous vibration orshudder in the steering wheel while braking,have it checked by an authorized dealer.
Note:Brake dust may accumulate on thewheels, even under normal drivingconditions. Some dust is inevitable as thebrakes wear and does not contribute tobrake noise. See Cleaning the AlloyWheels (page 251).
See Warning Lamps andIndicators (page 77).
Wet brakes result in reduced brakingefficiency. Gently press the brake pedal afew times when driving from a car wash orstanding water to dry the brakes.
Brake Over Accelerator
In the event the accelerator pedalbecomes stuck or entrapped, apply steadyand firm pressure to the brake pedal toslow the vehicle and reduce engine power.If you experience this condition, apply thebrakes and bring your vehicle to a safestop. Move the transmission selector leverto position P, switch the engine off andapply the parking brake. Inspect theaccelerator pedal for any interference. Ifnone are found and the condition persists,have your vehicle towed to the nearestauthorized dealer.
Brake Assist
Brake assist detects when you brakerapidly by measuring the rate at which youpress the brake pedal. It providesmaximum braking efficiency as long as youpress the pedal, and can reduce stoppingdistances in critical situations.
Anti-lock Brake System
This system helps you maintain steeringcontrol during emergency stops by keepingthe brakes from locking.
This lamp momentarilyilluminates when you turn theignition on. If the light does notilluminate during start up, remains on orflashes, the system may be disabled. Havethe system checked by an authorizeddealer.
If the system is disabled, normalbraking is still effective. If thebrake warning lamp illuminateswhen you release the parking brake, havethe system checked by an authorizeddealer.
HINTS ON DRIVING WITH
ANTI-LOCK BRAKES
Note:When the system is operating, thebrake pedal will pulse and may travelfurther. Maintain pressure on the brakepedal. You may also hear a noise from thesystem. This is normal.
The anti-lock braking system will noteliminate the risks when:
•you drive too closely to the vehicle infront of you
•your vehicle is hydroplaning
•you take corners too fast
•the road surface is poor.
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PARKING BRAKE
WARNING
Always set the parking brake fullyand make sure the transmissionselector lever is placed in position P.Failure to set the parking brake and engagepark could result in vehicle roll-away,property damage or bodily injury. Turn theignition to the lock position and removethe key whenever you leave your vehicle.
Apply the parking brake whenever yourvehicle is parked. Press the pedaldownward to set the parking brake. Thebrake warning lamp in the instrumentcluster will illuminate and remainsilluminated until the parking brake isreleased.
To release, pull the brake release leverlocated at the lower left side of theinstrument panel.
If you are parking your vehicle on a gradeor with a trailer, press and hold the brakepedal down, then set the parking brake.There may be a little vehicle movement asthe parking brake sets to hold the vehicle'sweight. This is normal and should be noreason for concern. If needed, press andhold the service brake pedal down, thentry reapplying the parking brake. Chock thewheels if required. If the parking brakecannot hold the weight of the vehicle, theparking brake may need to be serviced orthe vehicle may be overloaded.
HILL START ASSIST
WARNINGS
The system does not replace theparking brake. When you leave yourvehicle, always apply the parkingbrake and put the transmission in park (P).
WARNINGS
You must remain in your vehicle onceyou have activated the system.
During all times, you are responsiblefor controlling your vehicle,supervising the system andintervening, if required.
If the engine is revved excessively, orif a malfunction is detected, thesystem will be deactivated.
The system makes it easier to pull awaywhen your vehicle is on a slope without theneed to use the parking brake.
When the system is active, your vehicle willremain stationary on the slope for two tothree seconds after you release the brakepedal. This allows you time to move yourfoot from the brake to the acceleratorpedal. The brakes are releasedautomatically once the engine hasdeveloped sufficient drive to prevent yourvehicle from rolling down the slope. Thisis an advantage when pulling away on aslope, (for example from a car park ramp,traffic lights or when reversing uphill intoa parking space).
The system will activate automatically onany slope that will cause significant vehiclerollback.
Using Hill Start Assist
1. Press the brake pedal to bring yourvehicle to a complete standstill. Keepthe brake pedal pressed.
2. If the sensors detect that your vehicleis on a slope, the system will activateautomatically.
3. When you remove your foot from thebrake pedal, your vehicle will remainon the slope without rolling away forabout two or three seconds. This holdtime will automatically be extended ifyou are in the process of driving off.
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4. Drive off in the normal manner. Thebrakes will release automatically.
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PRINCIPLE OF OPERATION
The traction control system helps avoiddrive wheel spin and loss of traction.
If your vehicle begins to slide, the systemapplies the brakes to individual wheelsand, when needed, reduces engine powerat the same time. If the wheels spin whenaccelerating on slippery or loose surfaces,the system reduces engine power in orderto increase traction.
USING TRACTION CONTROL
(Dual rear wheel vehicles only)
In certain situations (for example, stuck insnow or mud), it may be beneficial to turnthe traction control system off. This allowsthe wheels to spin with full engine power.
Turn the traction control system off bypressing the stability control buttonlocated on the instrument panel.
If you cannot turn the system off, see theMyKey chapter for more information.
Placing your vehicle into four-wheel drivemode automatically disables tractioncontrol. Traction control operation willresume when you place your vehicle backinto two-wheel drive mode.
Engine only traction control(Dual rear wheel vehicles only)
Traction control systemStability control OFFindicatorButton functions
EnabledNot illuminatedDefault at start-up
DisabledIlluminatedButton pressed momentarily
EnabledNot illuminatedButton pressed again afterdeactivation
DisabledIlluminatedTransfer case switched to4WD*
*Engaging 4WD automatically disables the traction control system.
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System Indicator Lights andMessages
WARNING
If a failure has been detected withinthe AdvanceTrac system, thestability control light will illuminatesteadily. Verify that the traction controlsystem was not manually disabled usingthe stability control button. If the stabilitycontrol light still illuminates steadily, havethe system serviced by an authorizeddealer immediately. Operating your vehiclewith traction control disabled could leadto an increased risk of loss of vehiclecontrol, vehicle rollover, personal injury anddeath.
The stability control lighttemporarily illuminates onengine start-up and flasheswhen a driving condition activates thestability system.
The stability control off lighttemporarily illuminates onengine start-up and stays onwhen you turn the traction control systemoff, or if a problem occurs in the stabilitysystem.
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PRINCIPLE OF OPERATION
WARNINGS
Vehicle modifications involvingbraking system, aftermarket roofracks, suspension, steering system,tire construction and wheel and tire sizemay change the handling characteristicsof your vehicle and may adversely affectthe performance of the AdvanceTracsystem. In addition, installing any stereoloudspeakers may interfere with andadversely affect the AdvanceTrac system.Install any aftermarket stereo loudspeakeras far as possible from the front centerconsole, the tunnel, and the front seats inorder to minimize the risk of interfering withthe AdvanceTrac sensors. Reducing theeffectiveness of the AdvanceTrac systemcould lead to an increased risk of loss ofvehicle control, vehicle rollover, personalinjury and death.
Remember that even advancedtechnology cannot defy the laws ofphysics. It’s always possible to losecontrol of a vehicle due to inappropriatedriver input for the conditions. Aggressivedriving on any road condition can causeyou to lose control of your vehicleincreasing the risk of personal injury orproperty damage. Activation of theAdvanceTrac system is an indication thatat least some of the tires have exceededtheir ability to grip the road; this couldreduce the operator’s ability to control thevehicle potentially resulting in a loss ofvehicle control, vehicle rollover, personalinjury and death. If your AdvanceTracsystem activates, SLOW DOWN.
The AdvanceTrac with Roll StabilityControl system helps you keep control ofyour vehicle when on a slippery surface.The electronic stability control portion ofthe system helps avoid skids and lateralslides and roll stability control helps avoida vehicle rollover. The traction controlsystem helps avoid drive wheel spin andloss of traction. See Using TractionControl (page 163).
Vehicle without AdvanceTracwith RSC skidding off itsintended route.
A
Vehicle with AdvanceTrac withRSC maintaining control on aslippery surface.
B
USING STABILITY CONTROL
AdvanceTrac® with Roll StabilityControl™ (RSC®)
(Single rear wheel vehicles only)
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AA
B
BB
B