inflation pressure FORD EXPEDITION EL 2016 User Guide

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 vehicle
is 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. See thetire pressure monitoring systemreset procedure in this chapter.
Note:If your tires show unevenwear ask an authorized dealer tocheck for and correct any wheelmisalignment, tire imbalance ormechanical problem involvedbefore tire rotation.
Note:Your vehicle may beequipped with a dissimilar sparewheel and tire assembly. Adissimilar spare wheel and tireassembly is defined as a sparewheel and tire assembly that isdifferent in brand, size orappearance from the road tires andwheels. If you have a dissimilarspare wheel and tire assembly it isintended for temporary use onlyand should not be used in a tirerotation.
Note:After having your tiresrotated, inflation pressure must bechecked and adjusted to thevehicle requirements.
Rotating your tires at therecommended interval (asindicated in the ScheduledMaintenance chapter) will helpyour tires wear more evenly,providing better tire performanceand longer tire life.
Rear-wheel drive vehicles andfour-wheel drive vehicles (fronttires at left of diagram)
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Each tire, including the spare (ifprovided), should be checkedmonthly when cold and inflatedto the inflation pressure recommended bythe vehicle manufacturer on the vehicleplacard or tire inflation pressure label. (Ifyour vehicle has tires of a different sizethan the size indicated on the vehicleplacard or tire inflation pressure label, youshould determine the proper tire inflationpressure for those tires.)
As an added safety feature, your vehiclehas been equipped with a Tire PressureMonitoring System (TPMS) thatilluminates a low tire pressure telltalewhen one or more of your tires issignificantly under-inflated. Accordingly,when the low tire pressure telltaleilluminates, you should stop and checkyour tires as soon as possible, and inflatethem to the proper pressure. Driving on asignificantly under-inflated tire causes thetire to overheat and can lead to tire failure.Under-inflation also reduces fuel efficiencyand tire tread life, and may affect thevehicle’s handling and stopping ability.
Please note that the TPMS is not asubstitute for proper tire maintenance, andit is the driver’s responsibility to maintaincorrect tire pressure, even if under-inflationhas not reached the level to triggerillumination of the TPMS low tire pressuretelltale.
Your vehicle has also been equipped witha TPMS malfunction indicator to indicatewhen the system is not operating properly.The TPMS malfunction indicator iscombined with the low tire pressuretelltale. When the system detects amalfunction, the telltale will flash forapproximately one minute and then remaincontinuously illuminated. This sequencewill continue upon subsequent vehiclestart-ups as long as the malfunction exists.
When the malfunction indicator isilluminated, the system may not be ableto detect or signal low tire pressure asintended. TPMS malfunctions may occurfor a variety of reasons, including theinstallation of replacement or alternatetires or wheels on the vehicle that preventthe TPMS from functioning properly.Always check the TPMS malfunctiontelltale after replacing one or more tires orwheels on your vehicle to ensure that thereplacement or alternate tires and wheelsallow the TPMS to continue to functionproperly.
The tire pressure monitoring systemcomplies with part 15 of the FCC rules andwith RSS-210 of Industry Canada.Operation is subject to the following twoconditions: (1) This device may not causeharmful interference, and (2) This devicemust accept any interference received,including interference that may causeundesired operation.
This device complies with part 15 of theFCC Rules and with Licence exempt RSSStandards of Industry Canada. Operationis subject to the following two conditions:
•This device may not cause harmfulinterference.
•This device must accept anyinterference received, includinginterference that may cause undesiredoperation.
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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 (affixed to either the door hingepillar, door-latch post, or the door edgethat meets the door-latch post, next to thedriver's seating position), or Tire Labellocated on the B-Pillar or the edge of thedriver's door.
Note:You need to perform the tire pressuremonitoring system reset procedure aftereach tire rotation on vehicles that requiredifferent recommended tire pressures in thefront tires as compared to the rear tires.
Overview
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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