406
6-3. Do-it-yourself maintenance
■ The tire pressure warning system
must be initialized in the following
circumstances:
When rotating the tires.
When the tire inflation pressure is
changed when changing traveling
speed.
When the tire inflation pressure is
changed such as when changing tire
size. (When there are multiple spec-
ified pressures)
After registering the ID codes.
(P.408)
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 and
stop the engine for 20 minutes or
more.
Initialization cannot be performed 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 engine. (P.179)
4 Press or of the meter con-
trol switches and select .
5 Press or of the meter con-
trol switches and select “Vehicle
Settings”, and then press “OK”.
6 Press or of the meter con-
trol switches and select “TPWS”,
and then press “OK”.
7 Press or of the meter con-
trol switches and select “Set Pres-
sure”, and then press and hold
“OK” until the tire pressure warning
light starts blinking.
A message is displayed on the multi-infor-
mation display. Also, “--” is displayed for
inflation pressure of each tire on the multi-
information display while the tire pressure
warning system determines the position.
■ To avoid damage to the tire pressure
warning valves and transmitters
(vehicles with the tire pressure warn-
ing system)
When a tire is repaired with liquid seal-
ants, the tire pressure warning valve and
transmitter may not operate properly. If a
liquid sealant is used, contact your Lexus
dealer or other qualified service shop as
soon as possible. Make sure to replace
the tire pressure warning valve and trans-
mitter when replacing the tire. (P.405)
Initializing the tire pressure
warning system
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