2006 LEXUS LS430 belt

326
5-1. Essential information
Event data recorder
In a crash or a near car crash event
This device records some or all of the following information.
• Engine speed
• Whether the brake pedal was applied or not
• Vehicle speed
• To what extent the accelerator pedal was depressed
• Position of the transmission selector lever
• Whether the driver and front passenger wore the seat belts or not
• Driver's seat position
• SRS airbag deployment data
• SRS airbag system diagnostic data
Your vehicle has computers that monitor and control certain aspects of your
vehicle. These computers assist in dr iving and maintaining optimal vehicle
performance.

Besides storing data useful for troubles hooting,
there is a system to record
data in a crash or a near car crash event.

330
5-2. Steps to take in an emergency
If the following warning lights come on, have the vehicle inspected
immediately.
Failing to investigate the cause of the following warnings may lead to a
system operating abnormally and possibly cause an accident. 
Have the vehicle inspected by your Lexus dealer immediately.
Warning lightsWarning light/Details
(U.S.A)
(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic en gine contr
ol system;
• The electronic throttle control system; or
• The electronic automatic tr
ansmission con-
trol system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretension system.
Automatic headlight leveling system and adaptive
front lighting system
Indicates a malfunction in:
• The automatic head light leveling system; or
• The adaptive front lighting system, if the light
flashes.
(U.S.A)
(Canada)
ABS warning light
Indicates a malfunction in:
• The Anti-lock Braking System ABS; or
• The brake assist system.

5
When trouble arises
331
5-2. Steps to take in an emergency
If the following warning lights come on, have the malfunction repaired
immediately.
After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Warning lightsWarning light/DetailsCorrection
procedures
Open door warning light 
(Warning buzzer)*1
Indicates that a door is not
fully closed.
Check that all doors
are closed.
Low fuel level warning light
Fuel level 
(Less than approximately 3
gal [12L, 2.6 Imp.gal.])Refuel the vehicle.
Driver’s seat belt reminder
light
(Warning buzzer)
Warns the driver to wear
his/her seat belt.
Wear the seat belt.

332
5-2. Steps to take in an emergency
*1Open door warning buzzer:
( P.328)
Front passenger’s seat belt
reminder warning light
Warns the front passenger
to wear their seat belt.Wear the seat belt.
Master warning light
Indicates a malfunction in
any system in the vehicle
A message appears on the
multi-information display
See “If a warning mes -
sage appears...”.
(  P. 3 3 4 )

5
When trouble arises
333
5-2. Steps to take in an emergency
■If the electronic engine control system warning light remains on while driving
First check the following:
• Check fuel level, if the fuel tank is empty, refuel immediately.
• Check the fuel tank cap is loose tighten it securely.
The light will go off after driving regularly for some time.
If the light does not go off even after several trips, contact your Lexus dealer as soon
a
s possible.
■Front passenger detection sensor an d passenger’s seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and a chime to sound, even if a pas -
senger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
CAUTION
■If both the ABS and brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
v

ehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.

5
When trouble arises
341
5-2. Steps to take in an emergency
*1:Warning buzzer
A buzzer will sound and the master warnin g
light flashes if the vehicle is driven
at a speed of approximately 3 mph (5 km/h).
Warning message and lightDetailsCorrection procedures
Pre-collision system
warning
• The millimeter
radar sensor or the
grill cover is dirty.Clean the sensor cover
with a soft cloth.
• System turned off
for overheat pro -
tection because
pr
e-collision seat
belts have acti -
vated repeatedly
within a short time.
Wait for a while for the
system to reactivate.
Engine oil mainte -
nance information
(U.S.A. only)
The engine oil should
be replaced soon.
The engine oil needs
to be replaced.Replace the engine oil as
soon as possible.

358
5-2. Steps to take in an emergency
NOTICE
■To prevent damaging the vehicle
Do not pull- or push-start the vehicle, because the three-way catalytic converter
ma
y overheat and become a fire hazard.
■When handling jumper cables
Be careful that the jumper cables do not bec
ome tangled in the cooling fan or any
of the belts when connectin g or disconnecting them.

360
5-2. Steps to take in an emergency
■Overheating
If you observe the following, your vehicle may be overheating.
• The engine coolant temperatur
e gauge enters the red zone or a loss of power is
experienced.
• Steam is coming out from under the hood.
CAUTION
■To prevent an accident or injury when in specting under the hood of your vehicle
●Keep hands and clothing away from the fan and other belts while the engine is
running.
●Do not loosen the radiator cap while the engine and radiator are hot. 
Serious injury could result from scalding hot fluid and steam blown out under
pr
essure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled do wn befor
e adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
ca
n cause damage to the engine.
Add engine coolant if required.
Water can be used as an emer -
gency measure if engine coolant is
una
vailable.( P.367 )