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have been received. The vehicle may need to be driven
for up to 20 minutes above 15 mph (25 km/h) to receive
this information.
As an example, assume your vehicle has a recommended
cold tire inflation placard pressure (parked for more than
3 hours) 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 lamp. Driving the vehicle may
cause the tire pressure to rise to approximately 30 psi
(207 kPa), but the Tire Pressure Monitoring lamp will still
be ON. In this situation, the Tire Pressure Monitoring
lamp 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
equipment that is not of the same size, type, and/or
style. After-market wheels can cause sensor dam-
age. Do not use aftermarket tire sealants or balance
beads if your vehicle is equipped with a TPMS, as
damage to the sensors may result.
•
After inspecting or adjusting the tire pressure
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the Tire Pressure Moni-
toring Sensor.
5
STARTING AND OPERATING 423
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