User Manual - Page 470

For 2019 CHASSIS CAB.

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468 SERVICING AND MAINTENANCE
(Continued)
NOTE:
If your vehicle is equipped with a Tire Pressure Information
System (TPIS):
The Tire Pressure Information System (TPIS) uses unique
sensors in the inner rear wheels to help identify them from
the outer rear wheels, because of this, the inner and outer
wheel locations can’t be switched.
After a tire rotation is completed, as shown below, the
system can auto learn the locations of each sensor ID. Auto
learning/localization occurs when the vehicle ignition
status is changed from Off to On and speeds of greater
than 5 mph (8km/h) are obtained and remain over 5mph
(8km/h) for at about a 15 minute period. You may need to
drive for 20 minutes to account slower speeds and stops.
If the tires are rotated incorrectly, the Auto localization of
the TPIS sensors will fail to locate correctly resulting in
incorrect locations for the pressure values displayed in the
Instrument Cluster.
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were established by
the National Highway Traffic Safety Administration. The
specific grade rating assigned by the tire's manufacturer
in each category is shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform to Federal safety
requirements in addition to these grades.
CAUTION!
4500/5500 Dual Rear Tires may only have one approved
direction of rotation. This is to accommodate the asym-
metrical design (tread pattern) of the On/Off road tire.
When replacing a flat, the spare tire may have to be
remounted on the rim or installed at a different location
to maintain the correct placement of the tire on the
wheel relative to the tire/wheel position on the vehicle.
For example, if the spare is used to replace an outer rear
tire it will have to be remounted on the rim so that the
wheel is dished inward. That way the tread design of
asymmetrical tires will maintain proper position.
CAUTION! (Continued)
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