Hyundai 2009 Elantra Owner's Manual page 247

What to do in an emergency
Low tire pressure tell-
tale
When the tire pressure monitoring
system warning telltale is illuminat-
ed, one or more of your tires is sig-
nificantly under-inflated.
Immediately reduce your speed,
avoid hard cornering and anticipate
increased stopping distances. You
should stop and check your tires as
soon as possible. Inflate the tires to
the proper pressure as indicated on
the vehicle's placard or tire inflation
pressure label located on the driver's
side center pillar outer panel. If you
cannot reach a service station or if
the tire cannot hold the newly added
air, replace the low pressure tire with
the compact spare tire. Because the
compact spare tire is not equipped
with a tire pressure sensor, the
TPMS malfunction indicator may go
on and the Low Tire Pressure telltale
still turn on after restarting and about
20 minutes of continuous driving
before you have the low-pressure tire
repaired and replaced on the vehicle.
6 8
CAUTION
In winter or cold weather, the
low tire pressure telltale may be
illuminated if the tire pressure
was adjusted to the recom-
mended tire inflation pressure
in warm weather. It does not
mean your TPMS is malfunction-
ing because the decreased tem-
perature leads to a proportional
lowering of tire pressure.
When you drive your vehicle
from a warm area to a cold area
or from a cold area to a warm
area, or the outside temperature
is greatly higher or lower, you
should check the tire inflation
pressure and adjust the tires to
the recommended tire inflation
pressure.
WARNING
- Low pressure
damage
Significantly low tire pressure
makes the vehicle unstable and
can contribute to loss of vehicle
control and increased braking
distances.
Continued driving on low pres-
sure tires will cause the tires to
overheat and fail.