Lexus RX 450h Owner's Manual page 489

NOTICE
Make sure to install the tire valve caps.
●
If the tire valve caps are not installed,
water could enter the tire pressure
warning valves and the tire pressure
warning valves could be bound.
When replacing tire valve caps, do not
●
use tire valve caps other than those
specified. The cap may become stuck.
To avoid damage to the tire pressure
■
warning valves and transmitters
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.486)
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.
 When the tire inflation pressure is
changed such as when the tire size
is changed.
 When rotating the tires.
When the tire pressure warning system
is initialized, the current tire inflation
pressure is set as the benchmark pres-
sure.
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6-3. Do-it-yourself maintenance
How to initialize the tire pressure
■
warning system
1 Park the vehicle in a safe place and
turn the power switch off.
Initialization cannot be performed while
the vehicle is moving.
2 Adjust the tire inflation pressure to
the specified cold tire inflation pres-
sure level. (P.569)
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 Turn the power switch to ON
mode.
4 Select on the multi-information
display.
5 Press or of the meter con-
trol switch, select the "Vehicle Set-
tings" screen and then press the
.
6 Press or of the meter con-
trol switch, select the "TPMS"
screen and then press and hold the
until the tire pressure warn-
ing light blinks slowly 3 times.
"- -" will be displayed for inflation pressure
of each tire on the multi-information dis-
play while the tire pressure warning system
determines the position of each tire.
When position of each tire is determined,
the inflation pressure of each tire will be
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