402
6-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U)
5 Press or to select “Vehicle
Settings” and then press .
6 Press or to select “TPWS”
and then press .
7 Press or to select “Set
Pressure”. Then press and hold
until the tire pressure warning light
blinks 3 times.
Then a message will be displayed on the
multi-information display.
“--” will be displayed on the multiinforma-
tion display for the inflation pressure of
each tire while initialization is being per-
formed.
8 Drive straight (with occasional left
and right turns) at approximately
25 mph (40 km/h) or more for
approximately 10 to 30 minutes.
Initialization is complete when the position
of each tire is determined and the inflation
pressure of each tire is displayed on the
multi-information display.
Initialization may take longer than approxi-
mately 1 hour in certain situations, such as
when the vehicle is stopped for a long time
at traffic lights, etc. (→P.402)
■ Initialization procedure
● Make sure to perform the initialization
procedure after adjusting the tire inflation
pressure.
Also, make sure the tires are cold before
performing the initialization procedure or
adjusting the tire inflation pressure.
● If the power switch is turned off during
initialization, it is not necessary to restart
the initialization procedure from the
beginning as it will begin automatically
when the power switch is turned back to
ON mode.
● If initialization has accidentally been
started when it is not necessary, adjust
the tire inflation pressure to the specified
level when the tires are cold and then
perform the initialization procedure
again.
● While the position of each tire is being
determined and the inflation pressures
are not being displayed on the
multi-information display, if the inflation
pressure of a tire drops, the tire pressure
warning light will come on.
■ If the tire pressure warning system is not
initialized properly
● In the following situations, initialization
may take longer than usual to be com-
pleted or may not be possible. (Usually,
the vehicle will need to be driven for
approximately 10 to 30 minutes to com-
plete initialization.) If initialization is not
complete after driving approximately 30
minutes, continue driving for a while.
• If the vehicle is driven on an unpaved
road, it may take longer to complete ini-
tialization.
• If the vehicle is backed up while perform-
ing initialization, data collected during ini-
tialization will be cleared and it will take
longer than normal to complete.
• If the vehicle is driven in heavy traffic or
another situation where other vehicles
are driven close by, it may take time for
the system to recognize the tire pressure
warning valve and transmitters of your
vehicle over those of other vehicles.
If initialization is not complete after driving
for approximately 1 hour, park the vehicle in
a safe place for approximately 20 minutes
and then drive the vehicle again.
● In the following situations, initialization
will not be started or was not completed
properly and the system will not operate
properly. Perform the initialization proce-
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