2016 FORD F250 SUPER DUTY lock

Shifting between system modes
Note:Do not perform these operations ifthe rear wheels are slipping.
Note:Some noise may be heard as the 4x4system shifts or engages. This is normal. Inorder to reduce engagement noise, it isrecommended that all shifts be performedat speeds below3 mph (5 km/h).
Note:The vehicle should not be driven in4X4 High with the hub locks disengaged asthis condition may damage driveline systemcomponents.
Engage the locking hubs by rotating thehub lock control from FREE to LOCK, thenmove the transfer case lever from 2H(2WD) to 4H (4x4 High) at a stop or avehicle speed below 3 mph (5 km/h).
Move the transfer case lever from 4H (4x4High) to 2H (2WD) at a stop or a vehiclespeed below 3 mph (5 km/h), thendisengage the locking hubs (optional) byrotating the hub lock control from LOCKto FREE.
For proper operation, make sure that bothindicator arrows on the hub are aligned,and that both hubs are set to either FREEor LOCK.
Shifting to/from 4L (4x4 Low)
1. Bring the vehicle to a stop or a speedbelow 3 mph (5 km/h).
2. Place the transmission in N (Neutral).
3. Move the transfer case shift leverthrough N (Neutral) directly to thedesired position.
4. If the transfer case does not, or onlypartially moves to the desired position,perform a shift with the transmissionin N (Neutral) and the vehicle rolling ata speed below 3 mph (5 km/h).
5.If shifting to 2H (2WD) with the vehicleat a complete stop, disengage thelocking hubs (optional) by rotating thehub lock control from LOCK to FREE.
Using the N (Neutral) position
WARNING
Do not leave the vehicle unattendedwith the transfer case in the N(Neutral) position. Always set theparking brake fully and turn off the ignitionwhen leaving the vehicle.
The transfer case neutral position overridesthe transmission and puts the vehicle inneutral regardless of transmission gearshiftlever position. The vehicle can moveforward or backwards.
This position should only be used whentowing the vehicle.
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Four-Wheel Drive (If Equipped)E163189

Using the Electronic Shift on theFly 4WD system (If Equipped)
2H (2WD)
For general on-road driving. Sends powerto the rear wheels only and should be usedfor street and highway driving. Providesoptimal smoothness and fuel economy athigh speeds.
4H (4X4 HIGH)
Used for extra traction such as in snow oricy roads or in off road situations. Thismode is not intended for use on drypavement.
4L (4X4 LOW)
Uses extra gearing to provide maximumpower to all four wheels at reducedspeeds. Intended only for off-roadapplications such as deep sand, steepgrades, or pulling heavy objects. 4L (4x4low) will not engage while the vehicle ismoving above 3 mph (5 km/h); this isnormal and should be no reason forconcern. Refer to Shifting to/from 4L (4x4low) for proper operation.
Shifting between system modes
Note:Momentarily releasing the acceleratorpedal while performing a shift will improveengagement/disengagement times.
Note:Do not perform this operation if therear wheels are slipping.
Note:Some noise may be heard as thesystem shifts or engages; this is normal.
Note:4X4 high mode is not intended foruse on dry pavement.
You can move the control from 2H or 4Hat a stop or while driving. The informationdisplay may display a message indicatinga 4X4 shift is in progress. Once the shift iscomplete the message center will thendisplay the system mode selected.
If SHIFT DELAYED PULL FORWARD isdisplayed in the information display duringthe mode shift, transfer case gear toothblockage is present. To alleviate thiscondition, place the transmission in aforward gear and move the vehicle forwardapproximately 5 ft (1.5 m) to allow thetransfer case to complete the mode shift.
Shifting to/from 4L (4X4 low)
Note:Some noise may be heard as thesystem shifts or engages; this is normal.
Note:4x4 low mode is not intended for useon dry pavement.
1. Bring the vehicle to a speed of 3 mph(5 km/h) or less.
2. Place the transmission in N (Neutral).
3. Move the 4WD control to the desiredposition.
The information display will display amessage indicating a 4X4 shift is inprogress. The information display will thendisplay the system mode selected. If anyof the above shift conditions are not met,the shift will not occur and the informationdisplay will display information guiding thedriver through the proper shiftingprocedures.
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Four-Wheel Drive (If Equipped)E163190

If SHIFT DELAYED PULL FORWARD isdisplayed in the information display,transfer case gear tooth blockage ispresent. To alleviate this condition, placethe transmission in a forward gear, movethe vehicle forward approximately 5 ft(1.5 m), and shift the transmission back toneutral to allow the transfer case tocomplete the range shift.
How Your Vehicle Differs FromOther Vehicles
WARNING
Vehicles with a higher center ofgravity such as utility and four-wheeldrive vehicles handle differently thanvehicles with a lower center of gravity.Utility and four-wheel drive vehicles arenot designed for cornering at speeds ashigh as passenger cars any more thanlow-slung sports cars are designed toperform satisfactorily under off-roadconditions. Avoid sharp turns, excessivespeed and abrupt maneuvers in thesevehicles. Failure to drive cautiously couldresult in an increased risk of loss of vehiclecontrol, vehicle rollover, personal injury anddeath.
Truck and utility vehicles can differ fromsome other vehicles. Your vehicle may behigher to allow it to travel over roughterrain without getting hung up ordamaging underbody components.
The differences that make your vehicle soversatile also make it handle differentlythan an ordinary passenger car.
Maintain steering wheel control at alltimes, especially in rough terrain. Sincesudden changes in terrain can result inabrupt steering wheel motion, make sureyou grip the steering wheel from theoutside. Do not grip the spokes.
Drive cautiously to avoid vehicle damagefrom concealed objects such as rocks andstumps.
You should either know the terrain orexamine maps of the area before driving.Map out your route before driving in thearea. To maintain steering and brakingcontrol of your vehicle, you must have allfour wheels on the ground and they mustbe rolling, not sliding or spinning.
Driving Off-Road With Truck andUtility Vehicles
Note:On some models, the initial shift fromtwo-wheel drive to four-wheel drive whilethe vehicle is moving can cause somemomentary clunk and ratcheting sounds.This is the front drivetrain coming up tospeed and the automatic locking hubsengaging and is not cause for concern.
Note:Your vehicle may be equipped witha front air dam that can become damaged(due to reduced ground clearance) whentaking your vehicle off-road. This air damcan be taken off by removing two bolts.
Four-wheel drive vehicles are speciallyequipped for driving on sand, snow, mudand rough terrain and have operatingcharacteristics that are somewhatdifferent from conventional vehicles, bothon and off the road.
Power is supplied to all four wheelsthrough a transfer case. On four-wheeldrive vehicles, the transfer case allows youto select 4WD when necessary.Information on transfer case operation andshifting procedures can be found in thischapter. Information on transfer casemaintenance can be found in theMaintenance chapter. You should becomethoroughly familiar with this informationbefore you operate your vehicle.
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Four-Wheel Drive (If Equipped)

If your vehicle has anti-lock brakes, applythe brakes steadily. Do not pump thebrakes.
Driving on Snow and Ice
WARNING
If you are driving in slipperyconditions that require tire chains orcables, then it is critical that you drivecautiously. Keep speeds down, allow forlonger stopping distances and avoidaggressive steering to reduce the chancesof a loss of vehicle control which can leadto serious injury or death. If the rear end ofyour vehicle slides while cornering, steer inthe direction of the slide until you regaincontrol of your vehicle.
Note:Excessive tire slippage can causetransmission damage.
Four-wheel drive vehicles have advantagesover two-wheel drive vehicles in snow andice but can skid like any other vehicle.Should you start to slide while driving onsnowy or icy roads, turn the steering wheelin the direction of the slide until you regaincontrol.
Avoid sudden applications of power andquick changes of direction on snow andice. Apply the accelerator slowly andsteadily when starting from a full stop.
Avoid sudden braking. Although afour-wheel drive vehicle may acceleratebetter than a two-wheel drive vehicle insnow and ice, it will not stop any faster asbraking occurs at all four wheels. Do notbecome overconfident as to roadconditions.
Make sure you allow sufficient distancebetween you and other vehicles forstopping. Drive slower than usual andconsider using one of the lower gears. Inemergency stopping situations, apply thebrake steadily. Do not pump the brakepedal. See Hints on Driving WithAnti-Lock Brakes (page 169).
If Your Vehicle Gets Stuck In Mud orSnow
WARNING
Do not spin the wheels at over35 mph (56 km/h). The tires may failand injure a passenger or bystander.
If your vehicle gets stuck in mud or snow,it may be rocked out by shifting betweenforward and reverse gears, stoppingbetween shifts in a steady pattern. Presslightly on the accelerator in each gear.
Note:Do not rock your vehicle if the engineis not at normal operating temperature,damage to the transmission may occur.
Note:Do not rock your vehicle for morethan a minute, damage to the transmissionand tires may occur or the engine mayoverheat.
Parking
WARNINGS
If the parking brake is fully released,but the brake warning lamp remainsilluminated, the brakes may not beworking properly. See your authorizeddealer.
Always set the parking brake fullyand make sure the gearshift islatched in P (Park). Turn the ignitionto the off position and remove the keywhenever you leave your vehicle.
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Four-Wheel Drive (If Equipped)

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 (If Equipped)
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
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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Rear AxleE172924

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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Rear AxleE163191 E163170

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 261).
See Warning Lamps andIndicators (page 84).
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 to park (P),switch the engine off and apply the parkingbrake. Inspect the accelerator pedal forany interference. If none are found and thecondition persists, have your vehicle towedto the nearest authorized 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 anti-lock brake system isdisabled, normal braking is still effective.
If the brake warning lampilluminates when you release theparking brake, have the systemchecked by an authorized dealer.
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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BrakesE144522 E144522

PARKING BRAKE
WARNING
Always set the parking brake fullyand make sure the transmission isplaced in park (P). Failure to set theparking brake and engage park could resultin vehicle roll-away, property damage orbodily injury. Turn the ignition to the lockposition and remove the key whenever youleave 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. Failure to leave your vehicle securelyparked may lead to a crash or injury. SeeParking Brake (page 170).
WARNINGS
You must remain in your vehiclewhen the system turns on. At alltimes, you are responsible forcontrolling your vehicle, supervising thesystem and intervening, if required. Failureto take care may result in the loss ofcontrol of your vehicle, serious personalinjury or death.
The system will turn off if amalfunction is apparent or if you revthe engine excessively. Failure totake care may result in the loss of controlof your vehicle, serious personal injury ordeath.
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 vehicleremains stationary on the slope for two tothree seconds after you release the brakepedal. This allows time to move your footfrom the brake to the accelerator pedal.The system releases the brakesautomatically 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.
Note:The system only functions when youbring your vehicle to a complete standstillin an uphill gear (for example, drive whenfacing uphill or reverse when facingdownhill).
Note:There is no warning light to indicatethe system is either on or off.
Using Hill Start Assist
1. Press the brake pedal to bring yourvehicle to a complete standstill. Keepthe brake pedal pressed.
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Brakes