2006 Lexus GS430 warning

STARTING AND DRIVING
439
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
 Consult the dealer or an experienced radio / TV
technician for help.
FCC WARNING:
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user’s authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1)
this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of the
device.
Replacing tires and wheels
As you might have difficulty in locating a flat or deflated
tire, a tire pressure warning system should be installed on
the tires of this vehicle.
When replacing the wheels, be sure to install tire pressure
sensors on the wheels.
There are 3 ways to set up the tire pressure sensors:
a. Remove the sensor from the old wheel and install it to the
new wheel.
b. Keep the same wheel with tire pressure sensor and replace
the tire alone.
c. Use a new wheel and sensor.
You have to register an ID code for a new sensor. Up to 2
sets of codes can be registered. As one ID for the originally
installed sensor is registered at “MAIN” of the selector
switch, use the “2nd” position to register an ID for the new
sensor.
You do not need to re −register the ID code for any other
replacements. For the use of the originally installed tires,
put the selector switch at “MAIN” and for the use of tires set
purchased later, put the switch at “2nd”. For the sensor
selector switch, see page 442.

STARTING AND DRIVING
440
NOTICE
Have the tires, wheels or sensors replaced and ID
codes registered by Lexus dealer. If you need
sensors, purchase from Lexus dealer.
 The sensor nuts should always be tightened to a
torque of 4 N·m (0.4 kgf·m, 2.9 ft·lbf).
 The use of nongenuine wheels will cause the tire
pressure sensors to transmit the electronic code in
different manner, resulting in the failure of the
system.
Tire pressure warning system reset switch
G31004
The tire pressure warning system needs to be initialized
in the following conditions:
After replacing or rotating tires or wheels
 After replacing the tire pressure sensor
When initializing the system, the present tire condition is
stored as a standard.

STARTING AND DRIVING
441
To initialize the system, perform the following:
1. Park
the vehicle at a safe place and apply the parking brake.
Stop the engine.
2. Adjust the pressure of all the installed tires to the specified
level. (See “Tires and wheels” on pages 534 and 537.)
3. Start the engine.
4. Push and hold the reset switch until the low tire pressure
warning light blinks three times, and the message
“PRESSURE INITIAL” appears on the multi− information
display.
Do not turn the engine off for about 20 minutes until
initialization is complete.
G31007
When initializing the system, make sure the low tire pressure
warning light blinks three times and the message “PRESSURE
INITIAL” appears on the multi− information display. If the
warning light does not blink three times and the message does
not appear on the multi−information display, initialization failed
and the tire pressure warning system will not function properly.
In this case, initialize the system again.
Do not push the reset switch without adjusting the tire inflation
pressure to the specified level. Otherwise, the low 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.
If you push the reset switch while the vehicle is moving,
initialization is not performed.
If the low tire pressure warning light does not blink and the
message does not appear on the multi−information display
when you push and hold the reset switch, have the tire
pressure warning system checked at your Lexus dealer.

STARTING AND DRIVING
442
NOTICE
Do not turn the engine switch off during initialization,
or the system may not function properly due to
incomplete initialization.
 Check which tires are being used before initialization
of the system, and also check the selector switch
position. (See the following “Selector switch”.)
Selector switch
G31005
 1 Main position 22nd position
The selector switch is located on the underside of the
glove box.
The ID code is given in the tire pressure sensor. To
activate th e tire pressure warning system, it is necessary
to register the ID code of the sensor on the selector switch
in the vehicle.
2 sets of ID codes can be registered. The code of the tires
originally in stalled on the vehicle is registered on the switch at
“MAIN”. Have a new tires set with new tire pressure sensors
registered at “2nd” by Lexus dealer.
ID codes should be registered by Lexus dealer. Once
registered, change the setting position each time you purchase
tires and wheels. Re −registration is not required.
When purchasing new tires, consult your Lexus dealer.

STARTING AND DRIVING
446
Adaptive variable suspension control (GS430
only)
When the precollision sensor detects an object or
vehicle with which your vehicle may collide, and
determines that a collision may be unavoidable, the
adaptive variable suspension adjusts the damping effect
on the shock absorbers and regulates the vehicle not to
pitch forward so much.
The adaptive variable suspension will operate in the following
conditions:
When the vehicle speed is about 5 km/h (3 mph) or over.
 When the approaching speed in regard to the object or the
vehicle exceeds about 30 km/h (18 mph).
Precollision system failure warning
G31079
Precollision system warning light
The light warns that there is a problem somewhere in the
precollision system.
The light comes on when the engine switch is selected in
“IG−ON” mode. If the system works properly, the light goes off
after a few seconds.
If the light does not come on when the engine switch is selected
in “IG−ON” mode, have your vehicle checked by your Lexus
dealer.
If the system has a problem, the pre− collision system warning
light comes on or blinks. At this time, the master warning light
comes on, a warning tone sounds, and either of the following
messages appears on the multi−information display.
 PCS DISABLED NOW
 CHECK PCS

STARTING AND DRIVING
447
G13030
The precollision system warning light blinks, and the
above message appears in the following conditions:
The millimeter wave radar sensor or the grille cover is
dirty.
Clean the grille or sensor with a soft cloth to remove the dirt.
 The precollision seat belts are activated repeatedly for
a short time.
The system turns of f temporarily for overheating protection.
The above conditions do not indicate a malfunction. If the
problem is removed, the warning lights and message go out
and the system returns to normal.
G13031
If the pre−collision system warning light remains on, and the above message appears, the pre −collision system may not
operate. Contact your Lexus dealer as soon as possible to
service the vehicle.
Precaution for precollision system
It should be noted that the pre −collision sensor may detect the
following as the objects with which your vehicle might collide,
and the pre −collision system may operate, even though there
is no possibility of collision.
 When traveling through a curve, there is an object on the
edge of the road.
 When traveling through a curve, another vehicle is passing
from the opposite direction.
 When traveling across a narrow iron bridge.
 When there is a metallic object on the road.
 When there is a steel plate on the road at a construction site.
 When there is a bump on the road.
 When waiting to turn to the left in an intersection, and
another vehicle is passing from the opposite direction.
 If your vehicle approaches another vehicle ahead very
quickly.

IN CASE OF AN EMERGENCY
468
IF YOU HAVE A FLAT TIRE
(Vehicles with runflat tires)
G63004
You may continue driving a vehicle with runflat
tires even if any tire goes flat. It may be able to run
for a maximum of 160 km (100 miles) at a speed
below 90 km/h (55 mph) after the low tire pressure
warning light comes on. When you drive your
vehicle after the low tire pressure warning light
comes on, the tire must be replaced. Do not use the
repaired tire.
Observe the following precautions and take your vehicle
to the nearest Lexus dealer or authorized tire dealer.
CAUTION
If the low tire pressure warning light comes on,
take your vehicle to the nearest Lexus dealer or
authorized tire dealer as soon as possible,
observing the following instructions:
 Decelerate as soon as possible to the most
appropriate speed that conditions permit. Do
not drive for longer than 160 km (100 miles) or
over 90 km/h (55 mph).
 Avoid abrupt steering wheel maneuvering and
braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the
brakes, causing death or serious injury.
 The warning system may not activate
immediately if bursts or sudden air leakage
should occur.

IN CASE OF AN EMERGENCY
469
NOTICE
Do not use liquid sealants for a flat tire as tire
pressure sensors will be damaged.
 Take due care not to go over a curb stone and
be careful of the holes in the road because
deflated tire pressure affects tire cushion
performance. The wheels, tires, body,
suspension and other components could be
damaged.
 Your ground clearance is reduced if the runflat
tire goes flat so avoid driving over obstacles
and drive slowly on rough, unpaved roads and
speed bumps. Also, do not attempt to go
through an automatic car wash as the vehicle
may get caught, resulting in damage.
 When the tires must be replaced, have them
replaced by the nearest Lexus dealer or
authorized tire dealer. The tire pressure
sensors will be affected by the installation or
removal of tires.
 When the tires must be replaced, replace the
grommets for tire pressure sensors as well.
IF YOU HAVE A FLAT TIRE
(Vehicles with standard tires)
CAUTION
If the low tire pressure warning light comes on,
observe the following instructions:
 Decelerate as soon as possible to the most
appropriate speed that conditions permit.
 Avoid abrupt steering wheel maneuvering and
braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the
brakes, causing death or serious injury.
 The warning system may not activate
immediately if bursts or sudden air leakage
should occur.
1. Reduce your speed gradually, keeping a straight line.
Move cautiously off the road to a safe place − well away
from the traffic. Avoid stopping on the center divider of
a highway. Park on a level spot with firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the parking brake and put the transmission
in ”P”.
4. Have everyone get out of the vehicle on the side away
from traffic.