Acura TL 2007 Owner's Manual page 273

The TPMS can misinterpret the tire
pressure because of differences in
the air temperatures. For example, if
you check and fill your tires in a
warm area, then drive in extremely
cold weather, the tire pressure will
be lower than measured and could
be underinflated and cause the
TPMS indicators to come on. Or, if
you check and adjust your tire
pressure in cooler conditions, and
drive into extremely hot conditions,
the tires may become overinflated.
However, the TPMS indicators will
not come on if the tires are
overinflated.
Refer to page 302 for tire inflation
guidelines.
Tire Pressure Monitoring System (TPMS)
Although your tire pressure is
monitored, you must manually check
the tire pressures monthly.
Each tire, including the spare, should
be checked monthly when the
vehicle is cold, and set to the
recommended inflation pressure as
specified on the vehicle placard and
in the owner's manual (see page
303 ).
Tire Pressure Monitor
To select the tire pressure monitor,
press the INFO button several times
with the ignition switch in the ON
(II) position.
You will see the above display on the
multi-information display when all
tire pressures are normal.
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