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398
6-3. Do-it-yourself maintenance
Initializing the tire pressure
warning system
The tire pressure warning system
■
must be initialized in the following
circumstances:
When the tire inflation pressure is
changed such as when changing
traveling speed or load weight.
When the tire inflation pressure is
changed such as when the tire size
is changed.
When rotating the tires.
After performing the transmitter ID
code registration procedure.
(P.399)
When the tire pressure warning system
is initialized, the current tire inflation
pressure is set as the benchmark pres-
sure.
How to initialize the tire pressure
■
warning system
1
Park the vehicle in a safe place, turn
the power switch off and wait 20
minutes or more.
The initialization procedure cannot be
started while the vehicle is moving.
2
Adjust the tire inflation pressure to
the specified cold tire inflation pres-
sure level.
Make sure to adjust the tire pressure to the
specified cold tire inflation pressure level.
The tire pressure warning system will oper-
ate based on this pressure level.
3
Start the hybrid system.
4
Press
or
trol switch to select
LS500h_OM_(U)_1810
5
6
7
Then a message will be displayed on the
multi-information display.
"---" will be displayed on the multi-informa-
tion display for the inflation pressure of
each tire while initialization is being per-
formed.
8
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 normal
to complete if the vehicle speed cannot be
maintained at approximately 25 mph (40
km/h) or more. If initialization cannot be
completed after driving for 1 hour or more,
park the vehicle in a safe place, turn the
power switch off and wait 20 minutes or
more before performing the driving proce-
of the meter con-
dure again. (P.399)
.
Press
or
to select "Vehicle
Settings" and then press
Press
or
to select "TPWS"
and then press
.
Press
or
to select "Set
Pressure". Then press and hold
until the tire pressure warning light
blinks 3 times.
Drive straight (with occasional left
and right turns) at approximately
25 mph (40 km/h) or more for
approximately 10 to 30 minutes.
.
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