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lowing situations.
• Near a TV tower, electric power plant,
gas station, radio station, large display,
airport or other facility that generates
strong radio waves or electrical noise
• When carrying a portable radio, cellular
phone, cordless phone or other wireless
communication device
●
If tire position information is not correctly
displayed due to the radio wave condi-
tions, the display may be corrected by
changing the location of the vehicle as
the radio wave conditions may change.
●
When the vehicle is parked, the time
taken for the warning to start or go off
could be extended.
When tire inflation pressure declines rap-
●
idly for example when a tire has burst, the
warning may not operate.
Installing tire pressure warning
valves and transmitters
When replacing tires or wheels, tire
pressure warning valves and transmit-
ters must also be installed.
When new tire pressure warning
valves and transmitters are installed,
new ID codes must be registered in the
tire pressure warning computer.
(P.452)
Replacing tires and wheels
■
If the ID code of the tire pressure warning
valve and transmitter is not registered, the
tire pressure warning system will not work
properly. In this case, after driving for about
20 minutes, the tire pressure warning light
blinks for 1 minute and stays on to indicate a
system malfunction.
6-3. Do-it-yourself maintenance
NOTICE
Repairing or replacing tires, wheels,
■
tire pressure warning valves, trans-
mitters and tire valve caps
●
When removing or fitting the wheels,
tires or the tire pressure warning
valves and transmitters, contact your
Lexus dealer as the tire pressure warn-
ing valves and transmitters may be
damaged if not handled correctly.
●
Make sure to install the tire valve caps.
If the tire valve caps are not installed,
water could enter the tire pressure
warning valves, corrode the valve, and
cause sticking and air leaks.
When replacing tire valve caps, do not
●
use tire valve caps other than those
specified. The cap may become stuck.
Registering the position of each
wheel
When to register the position of
■
each wheel
It is necessary to register the position
of each wheel after performing a tire
rotation.
Wheel position registration can be
performed by oneself. Wheel position
registration is performed by driving
forward with moderate left and right
turns. However, depending on the driv-
ing conditions and driving environ-
ment, registration may take some time
to complete.
Registering the position of each
■
wheel
1
Park the vehicle in a safe place, turn
the engine switch off and wait 15
minutes or more.
2
Start the engine.
449
6
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