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For example, your vehicle may have a recommended
cold (parked for more than three hours) tire placard
pressure of 35 psi (241 kPa). If the ambient temperature is
68°F (20°C) and the measured tire pressure is 30 psi
(207 kPa), a temperature drop to 20°F (-7°C) will decrease
the tire pressure to approximately 26 psi (179 kPa). This
tire pressure is sufficiently low enough to turn on the
“Tire Pressure Monitoring Telltale Light.” Driving the
vehicle may cause the tire pressure to rise to approxi-
mately 30 psi (207 kPa), but the “Tire Pressure Monitor-
ing Telltale Light” will still be on. In this situation, the
“Tire Pressure Monitoring Telltale Light” will turn off
only after the tires have been inflated to the vehicle’s
recommended cold tire placard pressure value.
CAUTION!
• The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures have
been established for the tire size equipped on your
vehicle. Undesirable system operation or sensor
damage may result when using replacement equip-
ment that is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage. Us-
ing aftermarket tire sealants may cause the Tire
Pressure Monitoring System (TPMS) sensor to be-
come inoperable. After using an aftermarket tire
sealant it is recommended that you take your
vehicle to an authorized service center to have your
sensor function checked.
• After inspecting or adjusting the tire pressure al-
ways reinstall the valve stem cap. This will prevent
moisture and dirt from entering the valve stem,
which could damage the TPMS sensor.
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STARTING AND OPERATING 513
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