Hyundai 2009 Sonata - Manual (Page 186)

3 WHAT TO DO IN AN EMERGENCY
5 TIRE PRESSURE MONITORING SYSTEM (TPMS)
ONF048131
C320A01JM-AAT
➀ TPMS Malfunction Indicator
➁ Low Tire Pressure Telltale
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pres-
sure recommended by the vehicle manu-
facturer 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 de-
termine the proper tire inflation pres-
sure for those tires.)
As an added safety feature, your ve-
hicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure tell-
tale when one or more of your tires is
significantly under-inflated. Accord-
ingly, 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.
Driving on a significantly under-inflated
tire causes the tire to overheat and can
lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread
life, and may affect the vehicle’s han-
dling and stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been equipped
with a TPMS malfunction indicator to
indicate when the system is not operat-
ing properly. The TPMS malfunction
indicator is provided by a separate tell-
tale, which displays the symbol "TPMS"
when illuminated. When the malfunc-
tion indicator is illuminated, the system
may not be able to detect or signal low
tire pressure as intended. TPMS mal-
functions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
from functioning properly. Always
check the TPMS malfunction telltale
after replacing one or more tires or
wheels on your vehicle to ensure that
the replacement or alternate tires and
wheels allow the TPMS to continue to
function properly.