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SAFETY
126
TPMS (Tire Pressure Monitoring System)
Tire Pressure Monitoring System — Lo/Hi
Grade
The Tire Pressure Monitoring System (TPMS)
mo
nitors the air pressure of all four tires.
If the air pressure of one or more tires is too
lo
w, the system warns the driver by indi-
cating the warning light in the instrument
cluster and a beep sound.
The system monitors the tire pressures indi-
rectly using the data sent from the ABS
w
h
eel speed sensors.
To allow the system to operate correctly, the
sy
stem needs to be initialized with the spec-
ified tire pressure (value on the tire placard
l
a
bel). Follow the procedure and perform the
initialization (refer to “Tire Pressure Moni
-
toring System Initialization” paragraph).
The warning light flashes when the
system has a malfunction.
Because this system detects slight changes
in
tire conditions, the timing of the warning
may be faster or slower in the following
cases:
The size, manufacturer, or the type of tires
is different from the specification.
The size, manufacturer, or the type of a
tire is different from the others, or the
level of tire wear is excessively different
between them.
A run-flat tire, snow tire, or tire chains are
used.
An emergency tire is used (the warning
light may flash and then continue illumi-
nating).
A tire is repaired using the emergency flat
tire repair kit.
The tire pressure is excessively higher
than the specified pressure, or the tire
pressure is suddenly lowered for some
reason such as a tire burst during driving.
The vehicle speed is lower than about
9 mph (15 km/h) (including when the
ve
hicle is stopped), or the drive period is
shorter than five minutes.
The vehicle is driven on an extremely
rough road or a slippery, icy road.
Hard steering and rapid acceleration/
deceleration are repeated such as during
aggressive driving on a winding road.
Load on the vehicle is applied to a tire
such as by loading heavy luggage to one
side of the vehicle.
System initialization has not been imple-
mented with the specified tire pressure.
Tire Pressure Monitoring System Initialization
In the following cases, system initialization
m
u
st be performed so that the system oper-
ates normally:
A tire pressure is adjusted.
A tire rotation is performed. A tire or wheel
is replaced.
The battery is replaced or completely
discharged.
The warning light is illuminated.
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