engine coolant LEXUS LS430 2005 Owners Manual

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xiv
1 Engine coolant temperature gauge80
. . . . . . . . . . . . . . . . . . . . . . .
2 Slip indicator light 362, 365
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Master warning light 87
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Adaptive Front Lighting System off indicator light 56 . . . . . . . .
5 Tachometer 81
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . .
6 Turn signal indicator light 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Headlight indicator light 54
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Fog light indicator light 58
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Headlight high beam indicator light 57
. . . . . . . . . . . . . . . . . . . . . .
10 Automatic transmission indicator lights 305
. . . . . . . . . . . . . . . . .
11 Fuel filler door indicator 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 Fuel gauge 80
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
13 Low fuel level warning light 88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Damping mode indicator light 361
. . . . . . . . . . . . . . . . . . . . . . . . . .
15 Open door warning light 88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 Brake system warning light 84
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 SRS warning light 85
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
18 ODO/TRIP RESET button 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 Discharge warning light 86
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Driver’s seat belt reminder light 85
. . . . . . . . . . . . . . . . . . . . . . . . . .
21 Odometer and trip meter 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Multi information display 90
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Antilock brake system warning light 87
. . . . . . . . . . . . . . . . . . . .
24 Traction control system OFF indicator light 363
. . . . . . . . . . . . . .
25 Snow mode indicator light 315
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Key indicator light 20, 298
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Security indicator light 50
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 Instrument panel light control 109
. . . . . . . . . . . . . . . . . . . . . . . . . .
29 Power mode indicator light 315
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Malfunction indicator lamp 86
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31 Cruise control indicator light 326
. . . . . . . . . . . . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xvi
1 Engine coolant temperature gauge80
. . . . . . . . . . . . . . . . . . . . . . .
2 Slip indicator light 362, 365
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Master warning light 87
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Adaptive Front Lighting System off indicator light 56 . . . . . . . .
5 Tachometer 81
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . .
6 Turn signal indicator light 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Tail indicator light 54
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
8 Fog light indicator light 58
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Headlight high beam indicator light 57
. . . . . . . . . . . . . . . . . . . . . .
10 Automatic transmission indicator lights 305
. . . . . . . . . . . . . . . . .
11 Fuel filler door indicator 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 Fuel gauge 80
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
13 Low fuel level warning light 88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Damping mode indicator light 361
. . . . . . . . . . . . . . . . . . . . . . . . . .
15 Open door warning light 88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 Brake system warning light 84
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 SRS warning light 85
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
18 ODO/TRIP RESET button 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 Discharge warning light 86
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Driver’s seat belt reminder light 85
. . . . . . . . . . . . . . . . . . . . . . . . . .
21 Odometer and trip meter 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Multiinformation display 90
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Antilock brake system warning light 87
. . . . . . . . . . . . . . . . . . . .
24 Traction control system OFF indicator light 363
. . . . . . . . . . . . . .
25 Snow mode indicator light 315
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Key indicator light 20, 298
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Security indicator light 50
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 Instrument panel light control 109
. . . . . . . . . . . . . . . . . . . . . . . . . .
29 Power mode indicator light 315
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Malfunction indicator lamp 86
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31 Cruise control indicator light 326
. . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 1 – 3
79
INSTRUMENTS AND CONTROLS
Gauges, meters and service reminder
indicators
Fuel gauge80
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . .
Engine coolant temperature gauge 80
. . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 81
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Odometer and trip meter 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service reminder indicators and warning buzzers 82
. . . . . . . . . . . . . .
Multi−information display 90
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compass 105
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . .
Instrument panel light control 109
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GAUGES, METERS AND SERVICE REMINDER INDICATORS
80
FUEL GAUGE
13L062d
Low fuel level warning light
The gauge indicates the approximate quantity of fuel
remaining in the tank when the ignition switch is on.
It is a good idea to keep the tank over 1/4 full.
If the fuel level approaches “E” or the low fuel level warning light\
comes on, fill the fuel tank as soon as possible.
On inclines or curves, due to the movement of fuel in the tank,
the fuel gauge needle may fluctuate or the low fuel level
warning light may come on earlier than usual.
If the fuel tank is completely empty, the malfunction indicator
lamp comes on. Fill the fuel tank immediately.
The indicator lamp goes off after driving several times. If the
indicator lamp does not go off, contact your Lexus dealer as
soon as possible. See the inner back cover for fuel capacity and recommended
fuel selection.
ENGINE COOLANT
TEMPERATURE GAUGE
13L151
 Normal range
The gauge indicates the engine coolant temperature when
the ignition switch is on. The engine operating
temperature will vary with changes in weather and engine
load.
If the needle points to the red zone or higher, stop your vehicle
and allow the engine to cool.
Your vehicle may overheat during severe operating conditions,
such as:
 Driving up a long hill on a hot day.
 Reducing speed or stopping after high speed driving.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
81

Idling for a long period with the air conditioning on in
stop−and−go traffic.
 Towing a trailer.
NOTICE
Do not remove the thermostat in the engine cooling
system as this may cause the engine to overheat. The
thermostat is designed to control the flow of coolant
to keep the temperature of the engine within the
specified operating range.
 Do not continue driving with an overheated engine.
See “If your vehicle overheats” on page 404.
TACHOMETER
13L144
The tachometer indicates engine speed in thousands of
rpm (revolutions per minute). Use it while driving to
prevent engine overrevving.
Driving with the engine running too fast causes excessive
engine wear and poor fuel economy. Remember, in most
cases the slower the engine speed, the greater the fuel
economy.
NOTICE
Do not let the indicator needle get into the red zone. This
may cause severe engine damage.

STARTING AND DRIVING
305
The engine should be warmed up by driving, not in idle. For
warming
up, drive with smoothly turning engine until the engine
coolant temperature is within normal range.
If the engine stalls ...
Simply restart it, using the correct procedure given in normal
starting.
If the engine will not start
See “If your vehicle will not start” on page 400.
NOTICE
 Do not crank for more than 30 seconds at a time. This
may overheat the starter and wiring systems.
 Do not race a cold engine.
 If the engine becomes difficult to start or stalls
frequently, have the engine checked immediately.
AUTOMATIC TRANSMISSION
Your automatic transmission has a shift lock system to
minimize the possibility of incorrect operation. This
means you can only shift out of “P” position when the
brake pedal is depressed with the ignition switch in “ON”
position. ( )
31L320

STARTING AND DRIVING
308
31l323
 1Brake pedal 2“D” (Drive) position
4. With your foot holding down the brake pedal, shift the
selector lever to “D”.
Always use the “D” position to improve fuel economy and quiet
driving. Only in this position, shifting into the overdrive gear is
possible. However, while the engine coolant temperature is
low, the transmission will not shift into the overdrive gear even
in the “D” position. (See “(c) Using engine braking” and “(f)
Good driving practice” for exceptions.)
CAUTION
Never put your foot on the accelerator pedal while
shifting.
5. Release the parking brake and brake pedal. Depress
the accelerator pedal slowly for smooth starting.
In normal cruising, the vehicle will start in first gear and
automatically shift up to the most suitable gear. On inclines,
declines or winding roads, etc., the vehicle shifts up and down
automatically according to the running conditions to obtain the
suitable driving power and engine braking.
If you need to accelerate rapidly while driving, depress the
accelerator pedal to the full throttle position. This provides
more acceleration by auto matically downshifting the
transmission to the next lower gear or beyond, depending on
the vehicle speed.
If engine braking is needed, such as in descending a long hill,
see “(c) Using engine braking”.
 AI (Artificial Intelligence) shifting control
AI shifting control selects the most suitable shift range
automatically according to the driver’s operation and
driving condition.
AI shifting control operates automatically with the
selector lever in the “D” position. When the lever is moved
to the “S” position, this function will be canceled.
Shifting control on the slope: On inclines, you can drive
smoothly with reduced shifting quantity. On declines, the
vehicle will shift down automatically to obtain optimum engine
braking and reduce the driver’s foot braking load.
Automatic shifting point change control: The most suitable
shift range is selected depending on the driver’s accelerator
pedal operation and vehicle condition.

DRIVING TIPS
384
WINTER DRIVING TIPS
Make sure you have a proper freeze protection for engine
coolant.
Only use “Toyota Super Long Life Coolant” or similar high
quality ethylene glycol based non−silicate, non −amine,
non− nitrite, and non −borate coolant with long −life hybrid
organic acid technology. (Coolant with long −life hybrid organic
acid technology is a combination of low phosphates and
organic acids.)
See “Checking the engine coolant level” on page 455 for
details of coolant type selection.
For the U.S.A.—“Toyota Super Long Life Coolant” is a mixture
of 50% coolant and 50% deionized water. This coolant
provides protection down to about −35C (− 31F).
For Canada—“Toyota Super Long Life Coolant” is a mixture of
55% coolant and 45% deionized water. This coolant provides
protection down to about −42C (− 44F).
NOTICE
Do not use plain water alone.
Check the condition of the battery and cables.
Cold temperatures reduce the capacity of any battery, so it
must be in top shape to pr ovide enough power for winter
starting. Page 496 tells you how to visually inspect the battery.
Your Lexus dealer and most service stations will be pleased to
check the battery charge level. Make sure the engine oil viscosity is suitable for the cold
weather.
See page 454 for recommended viscosity. Leaving a heavy
summer oil in your vehicle during winter months may cause
harder starting. If you are not sure about which oil to use, call
your Lexus dealer
− they will be pleased to help.
Check the electronic ignition system for loose
connections or obvious damage.
Keep the door locks from freezing.
Squirt lock de −icer or glycerine into the locks to keep them from
freezing.
Use a washer fluid containing an antifreeze solution.
This product is available at your Lexus dealer and most auto
parts stores. Follow the manufacturer’s directions for how
much to mix with water.
NOTICE
Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.
Do not use your parking brake when there is a possibility
it could freeze.
When parking, put the transmission into “P” and block the front
wheels. Do not use the parking brake, or snow or water
accumulated in and around the parking brake mechanism may
freeze the parking brake, making it hard to release.

DRIVING TIPS
391

Because of the added load of the trailer, your vehicle’s
engine may overheat on hot days (at temperatures over
30 C [85 F]) when going up a long or steep grade with a
trailer. If the engine coolant temperature gauge indicates
overheating, immediately turn off the air conditioning (if in
use), pull your vehicle off the road and stop in a safe spot.
See “If your vehicle overheats” on page 404.
 Always place wheel blocks under both the vehicle and trailer
wheels when parking. Apply the parking brake firmly. Put
the transmission in “P”. Avoid parking on a slope with a
trailer, but if it cannot be avoided, do so only after performing
the following:
1. Apply the brakes and keep them applied.
2. Have someone place wheel blocks under both the vehicle
and trailer wheels.
3. When the wheel blocks are in place, release your brakes
slowly until the blocks absorb the load.
4. Apply the parking brake firmly.
5. Shift into “P” and turn off the engine. When restarting out after parking on a slope:
1. With the transmission in “P” position, start the engine. Be
sure to keep the brake pedal depressed.
2. Shift into the “3” (third range), “2” (second range), “\
1” (first
range) or “R” position.
3. Release the
parking brake and brake pedal and slowly pull
or back away from the wheel blocks. Stop and apply your
brakes.
4. Have someone retrieve the blocks.
CAUTION
 Do not exceed 72 km/h (45 mph) or the posted towing
speed limit, whichever is lower. Because instability
(swaying) of a towing vehicletrailer combination
usually increases as the speed increases, exceeding
72 km/h (45 mph) may cause loss of control.
 Slow down and downshift before descending steep
or long downhill grades. Do not make sudden
downshifts.
 Avoid holding the brake pedal down too long or too
frequently. This could cause the brakes to overheat
and result in reduced braking efficiency.

IN CASE OF AN EMERGENCY
404
IF YOU CANNOT INCREASEENGINE SPEED
If engine speed does not increase when the accelerator
pedal is depressed, there may be a problem somewhere
in the electronic throttle control system . Move the vehicle
to a safe place by means of creeping and call a Lexus
dealer for assistance:
1. Depress the brake pedal and shift to the “D” position.
2. Gradually release the brake pedal, and the vehicle starts to
move by creeping. After arriving at a safe place, stop the
vehicle and call a Lexus dealer for assistance.
CAUTION
 The above method of moving the vehicle is for
emergency. Use it only for moving minimum
distances to a safe place.
 Be especially careful to prevent erroneous pedal
operation.
IF YOUR VEHICLE OVERHEATS
If your engine coolant temperature gauge indicates
overheating, if you experience a loss of power, or if you
hear a loud knocking or pinging noise, the engine has
probably overheated.
When the engine overheats
Pull safely off the road, stop the vehicle and turn on your
emergency flashers. Put the transmission in “P” and apply the
parking brake.
A: If steam is coming from your engine:
Turn off the engine. Leave the hood closed until there is no sign
of steam or coolant. Your engine could have been seriously
damaged already. Call your Lexus dealer for assistance.
CAUTION
To help avoid personal injury, keep the hood closed until
there is no steam. Escaping steam or coolant is sign of
very high pressure.