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STARTINGANDOPERATING
decrease. Tire pressure should always be set based on
cold inflation tire pressure. This is defined as the tire
pressureafteravehiclehasnotbeendrivenformorethan
increasedtotherecommendedcoldtirepressureinorder
for the “Tire Pressure Monitoring Telltale Light” to be
turnedoff.Thesystemwillautomaticallyupdateandthe
“TirePressureMonitoringTelltaleLight”willextinguish
oncetheupdatedtirepressureshavebeenreceived.The
vehiclemayneedtobedrivenforupto10minutesabove
15mph(24km/h)toreceivethisinformation.
3
hours - and in outside ambient temperature. Refer to
the “Tires – General Information” in this section for
information on how to properly inflate the vehicle’s
tires.Thetirepressurewillalsoincreaseasthevehicleis
driven-thisisnormalandthereshouldbenoadjustment
forthisincreasedpressure.
For example, your vehicle has a recommended cold
(parkedformorethan3hours)tirepressureof33psi(227
kPa). If the ambient temperature is 68°F (20°C) and the
measuredtirepressureis28psi(193kPa),atemperature
drop to 20°F (-7°C) will decrease the tire pressure to
approximately 24 psi (165 kPa). This tire pressure is
sufficiently low enough to turn ON the “Tire Pressure
MonitoringTelltaleLight.”Drivingthevehiclemaycause
thetirepressuretorisetoapproximately28psi(193kPa),
butthe“TirePressureMonitoringTelltaleLight”willstill
be ON. In this situation, the “Tire Pressure Monitoring
The TPM System will warn the driver of a low tire
pressureifthetirepressurefallsbelowthelowpressure
warning threshold for any reason, including low tem-
peratureeffects.
TheTPMSystemwillcontinuetowarnthedriveroflow
tirepressureaslongastheconditionexists,andwillnot
turn off until the tire pressure is at or above recom-
mended cold tire pressure. Once the low tire pressure
warninghasbeenilluminated,thetirepressuremustbe
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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