reset LEXUS LX470 2006 Owner's Manual

STARTING AND DRIVING
303
If the tire pressure warning light blinks...
31x609
If the tire pressure warning light blinks when the ignition
switch is turned to the “ON” position, the tire pressure
warning system is not working properly.
The system will be disabled in the following conditions:
(When the condition becomes normal, the system will work
properly.)

If tires not equipped with tire pressure warning valves and
transmitters are used.
 If the ID code on the tire pressure warning valves and
transmitters is not registered.
 If electronic devices or facilities using similar radio wave
frequencies are nearby.
 If a radio set at similar frequencies is in use in the vehicle. 
If a window tint that affects the radio wave signals is
installed.
 If the tire pressure warning select switch is set to a dif ferent
tire setting.
 If there is a lot of snow or ice on the vehicle, in particular
around the wheels or wheel housings.
 If non− genuine Lexus wheels are used.
 If tire chains are used.
 If the spare tire is in a location subject to poor radio wave
signal reception.
 If the tire inflation pressure is 500 kPa (5.1 kgf/cm2
or bar,
73 psi) or higher.
If the tire pressure warning light blinks frequently when the
ignition switch is turned to the “ON” position, have it checked
by your Lexus dealer.
Even if you use genuine wheels, the tire pressure warning
system may not work properly with some types of tires.
Pushing the tire pressure warning reset switch should not turn
off the tire pressure warning light.

STARTING AND DRIVING
305
Replacing tires and wheels
When replacing the tires and wheels, be sure to install tire
pressure warning valves and transmitters. ID codes on the tire
pressure warning valves and transmitters are registered on the
tire pressure warning ECU. When replacing a tire pressure
warning valve and transmitter, it is necessar y to register the ID
code of tire pressure warning valve and transmitter. Have the
ID code registered by your Lexus dealer.
If the ID code is not registered, the system will not work
properly. After about 1 hour, the tire pressure warning light
blinks to indicate a system malfunction.
NOTICE
When the tires or tire pressure warning valves and
transmitters must be replaced, have them replaced by
your Lexus dealer. The tire pressure warning valves
and transmitters will be affected by the installation or
removal of tires.
Tire pressure warning reset switch
31x612
When initializing the system, the present tire inflation pressure
is stored as standard. The tire pressure warning system
determines decreased air pressure by comparing the present
and the standard tire inflation pressures. When you change
the set tire inflation pressure, it is necessary to initialize the tire
pressure warning system.
 When rotating the tires on vehicles differing with front and
rear tire inflation pressures.
 When changing the tire inflation pressure by changing
traveling speed or load weight, etc.
 When changing the tire size.

STARTING AND DRIVING
306To initialize the system, perform the following:
1. Park the vehicle in a safe place and turn the ignition switch
to the “OFF” position.
2. Adjust the pressure of all the installed tires to the specified
cold tire inflation pressure level. (See “Tire and wheels” on
page 420.)
3. Turn the ignition switch to the “ON” position.
4. Push and hold the tire pressure warning reset switch until
the tire pressure warning light blinks slowly three times.
5. Wait for a few minutes with the ignition switch “ON”, and
then turn the ignition switch to the “OFF” position.
If you push the tire pressure reset switch while the vehicle is
moving, initialization is not performed.
If you push the tire pressure reset switch accidentally and
initialization is performed, adjust the tire inflation pressure to
the specified level and initialize the system again.
31x609
If the tire pressure warning light does not blink slowly three
times when you push and hold the reset switch, initialization
has failed and the tire pressure warning system may not work
properly. In this case, initialize the system again. If
initialization
cannot be performed, have the system checked at
your Lexus dealer.
CAUTION
Do not push the reset switch without first adjusting the
tire inflation pressure to the specified level. Otherwise,
the tire pressure warning light may not come on even if
the tire inflation pressure is low, or it may come on when
the tire inflation pressure is actually normal.

ELECTRICAL COMPONENTS
452
NOTICE
Make sure the engine and all accessories are turned
off before performing maintenance.
 When checking the battery, remove the ground cable
first and reinstall it last.
 Be careful not to cause a short circuit with tools.
 Take care no solution gets into the battery when
washing it.
If the battery terminal is disconnected or the battery is run
down...
 The variable gear ratio steering system is reset temporarily
and “VGRS” warning light flashes after you reconnect the
battery terminal. In this case, you should turn off the light
and return the system to normal. To return the system to
normal, see “Variable gear ratio steering system” on page
293.
 The moon roof may not operate automatically and the jam
protection function will not operate correctly after you
reconnect, replace or recharge the battery with the moon
roof slide −opened or tilted up. In any of these cases, you
should return the moon roof to normal. To return the moon
roof to normal, see “Moon roof” on page 95.
Checking battery condition
(a) Checking by fluid level lines
64X005c
 1 Upper line 2Lower line
The fluid (electrolyte) level must be between the upper and
lower lines.
When checking the fluid level, look at all six cells, not just one
or two.
If the level is lower than the lower line, have the battery
checked by your Lexus dealer.