Acura 2007 RDX Owner's Manual page 314

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Tire Pressure Monitoring System (TPMS)
Because tire pressure varies by
temperature and other conditions,
the low tire pressure indicator may
come on unexpectedly.
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 low tire pressure
indicator to come on. Or, if you
check and adjust your tire pressure
in cooler conditions, and drive into
extremely hot conditions, the tire
may become overinflated. However,
the low tire pressure indicator will
not come on if the tires are
overinflated.
Refer to page 372 for tire inflation
guidelines.
310
Tire Pressure Monitoring
System (TPMS) Indicator
On RDX model only
This indicator comes on and stays on
if there is a problem with the tire
pressure monitoring system.
If this happens, the system will shut
off and no longer monitor tire
pressures. Have the system checked
by your dealer as soon as possible.
Changing a Tire with TPMS
If you have a flat tire, the low tire
indicator and tire pressure monitor
will come on. Replace the indicated
flat tire with the compact spare tire
(see page 383 ).
After you replace the flat tire with
the spare, the low tire pressure
indicator stays on. This is normal;
the system is not monitoring the
spare tire pressure. Manually check
the spare tire pressure to be sure it
is correct.
Never use a puncture-repairing agent
in a flat tire. If used, you will have to
replace the tire pressure sensor.
Have the flat tire repaired by your
dealer as soon as possible.