Honda Civic Hybrid 2009 Owner's Manual page 361

Tire Pressure Monitoring System (TPMS)
U.S. models only
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label.
(If your vehicle has tires of a
different size than the size indicated
on the vehicle placard or tire
inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
Required Federal Explanation
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale
when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure.
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