Lexus LS500h, Manual, Page: 398 / 524

398
6-3. Do-it-yourself maintenance
LS500h_OM_(U)_1810
■
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 of the meter con-
trol switch to select .
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 multi-informa-
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 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-
dure again. (

P.399)
Initializing the tire pressure
warning system