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NOTE:
The PEB system will retain the last setting selected by
the driver after ignition shut down. The system will not
reset to the default setting when the vehicle is
restarted.
TIRE PRESSURE MONITORING
SYSTEM (TPMS)
The Tire Pressure Monitoring System (TPMS) will warn
the driver of a low tire pressure based on the vehicle
recommended cold placard pressure.
NOTE:
The alert warning on the cluster will stay on until the
tire is inflated to the placard pressure.
The tire pressure will vary with temperature by approxi-
mately 1 psi (7 kPa) for every 12°F (6.5°C). This
means that when the outside temperature decreases,
the tire pressure will decrease. Tire pressure should
always be set based on cold inflation tire pressure. This
is defined as the tire pressure after the vehicle has not
been driven for at least three hours, or driven less than
1 mile (1.6 km) after a three hour period. The cold tire
inflation pressure must not exceed the maximum infla-
tion pressure molded into the tire sidewall. The tire
pressure will also increase as the vehicle is driven. This
is normal and there should be no adjustment for this
increased pressure.
See
page 273 on how to properly inflate the vehi-
cle’s tires.
The TPMS will warn the driver of a low tire pressure if
the tire pressure falls below the low-pressure warning
limit for any reason, including low temperature effects
and natural pressure loss through the tire.
The TPMS will continue to warn the driver of low tire
pressure as long as the condition exists, and will not
turn off until the tire pressure is at or above the recom-
mended cold placard pressure. Once the low tire pres-
sure warning (Tire Pressure Monitoring System Warning
Light) illuminates, you must increase the tire pressure
to the recommended cold placard pressure in order for
the TPMS Warning Light to turn off.
The system will automatically update and the TPMS
Warning Light will turn off once the system receives the
updated tire pressures. The vehicle may need to be
driven for up to 20 minutes above 15 mph (24 km/h) in
order for the TPMS to receive this information.
For example, your vehicle may have a recommended
cold (parked for more than three hours) placard pres-
sure of 33 psi (227 kPa). If the ambient temperature is
68°F (20°C) and the measured tire pressure is 28 psi
(193 kPa), a temperature drop to 20°F (-7°C) will
decrease the tire pressure to approximately 24 psi
(165 kPa). This tire pressure is low enough to turn on
the TPMS Warning Light. Driving the vehicle may cause
the tire pressure to rise to approximately 28 psi
(193 kPa), but the TPMS Warning Light will still be on.
In this situation, the TPMS Warning Light will turn off
only after the tires are inflated to the vehicle’s recom-
mended cold placard pressure value.
NOTE:
When filling warm tires, the tire pressure may need to
be increased up to an additional 4 psi (28 kPa) above
the recommended cold placard pressure in order to
turn the TPMS Warning Light off.
CAUTION!
•
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system
operation or sensor damage may result when
using replacement equipment that is not of the
same size, type, and/or style. The TPMS sensor is
not designed for use on aftermarket wheels, and
may contribute to a poor overall system perfor-
mance. Customers are encouraged to use Original
Equipment Manufacturer (OEM) wheels to ensure
TPMS feature operation.
•
Using aftermarket tire sealants may cause the Tire
Pressure Monitoring System (TPMS) sensor to
become inoperable. After using an aftermarket tire
sealant it is recommended that you take your
vehicle to an authorized dealer to have your sensor
function checked.
•
After inspecting or adjusting the tire pressure
always reinstall the valve stem cap. This will pre-
vent moisture and dirt from entering the valve
stem, which could damage the TPMS sensor.
NOTE:
•
The TPMS is not intended to replace normal tire
care and maintenance, or to provide warning of a
tire failure or condition.
•
The TPMS should not be used as a tire pressure
gauge while adjusting your tire pressure, unless
your vehicle is equipped with a Tire Fill Alert (TFA)
system.
SAFETY 197
6
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