2000 Lexus LS400 lexus LS400 2000 Engine / LEXUS 2000 LS400 OWNER'S MANUAL (OM50533U)

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(b) Starting a flooded engine
If the engine will not start, your engine may be
flooded because of repeated cranking.
If this happens, turn the key to ºSTARTº with the
accelerator pedal held down. Continue this operation for
30 seconds and then stop cranking. Then try starting the
engine with your foot off the accelerator pedal.
If the engine does not start after 30 seconds of cranking,
release the key, wait a few minutes and try again.
If the engine still will not start, it needs adjustment or
repair. Call a Lexus dealer, Roadside Assistance or
Customer Service Assistance. (See ºForewordº.)
NOTICE
Do not crank for more than 30 seconds at a time. This may overheat the starter and wiring systems.

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(c) Jump starting
To avoid serious personal injury and damage to
your vehicle which might result from battery
explosion, acid burns, electrical burns, or damaged
electronic components, these instructions must be
followed precisely.
If you are unsure about how to follow this procedure, we
strongly recommend that you seek help from your Lexus
dealer, Roadside Assistance or Customer Service
Assistance. (See ºForewordº.)
CAUTION
 Batteries contain sulfuric acid which is poisonous
and corrosive. Wear protective safety glasses when
jump starting, and avoid spilling acid on your skin,
clothing, or vehicle.
 If you should accidentally get acid on yourself or in
your eyes, remove any contaminated clothing and
flush the affected area with water immediately. Then
get immediate medical attention. If possible,
continue to apply water with a sponge or cloth while
en route to the medical office.
 The gas normally produced by a battery will explode
if a flame or spark is brought near. Use only
standardized jumper cables and do not smoke or
light a match while jump starting.

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NOTICE
The battery used for boosting must be 12 V. Donot jump start unless you are sure that thebooster battery is correct.
40L002-7

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5Discharged battery 6Booster battery
JUMP STARTING PROCEDURE
1. If the booster battery is installed in another vehicle,
make sure the vehicles are not touching. Turn off all
unnecessary lights and accessories.
2. If required, remove all the vent plugs from the booster
battery. Lay a cloth over the open vents on the booster
battery. (This helps reduce the explosion hazard,
personal injuries and burns.)
If the booster battery is an extended maintenance
interval battery, it is not necessary to remove the vent
plugs.
3. If the engine in the vehicle with the booster battery is
not running, start it and let it run for about 5 minutes.
During jump starting, run the engine at about 2000 rpm
with the accelerator pedal lightly depressed.
4. Locate po
sitive (+) and negative (±) terminals of each
battery. Connect the jumper cables in the exact order
(
1 2 3 4) shown in the illustration.
1 Connect a positive (red) jumper cable clamp to the
positive (+) terminal of the discharged battery.
2 Connect the clamp at the other end of the positive
(red) cable to the positive (+) terminal of the booster
battery.
3 Connect a negative (black) cable clamp to the
negative (±) terminal of the booster battery.
4Connect the clamp at the other end of the negative
(black) cable to a solid, stationary, unpainted
metallic point (such as shown in the illustration)
away from the battery. Do not connect it to or near
any part that moves when the engine is cranked.

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CAUTION
When making the connections, to avoid serious injury,
do not lean over the battery or accidentally let the
jumper cables or clamps touch anything except the
correct battery terminals or the ground.
5. Start your engine in the normal way. After starting,
run it at about 2000 rpm for several minutes with the
accelerator pedal lightly depressed.
6. Carefully disconnect the cables in the exact reverse
order: the negative cable and then the positive cable.
7. Carefully dispose of the battery cover cloths which
may now contain sulfuric acid.
8. If removed, replace all the battery vent plugs.
If the cause of your battery discharging is not apparent
(for example, lights left on), you should have it checked.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.

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When the engine overheats
Pull safely off the road, stop the vehicle and turn on your
emergency flashers. Put the transmission in ºPº 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.

IN CASE OF AN EMERGENCY
358B: If no steam is coming from your engine:
Leave the engine running and turn off the air
conditioning. Check the following.

Is the cooling fan operating?
 Is the coolant in the acceptable range?
 Is the engine drive belt O.K.?
CAUTION
When the engine is running, keep hands and clothing
away from the moving fan and engine drive belt.
 Do not attempt to remove the radiator cap when the
engine and radiator are hot. Serious injury could
result from scalding hot fluid and steam blown out
under pressure.
If the cooling fan is not operating or the coolant is not in
the acceptable range, turn off the engine and call your
Lexus dealer.
If both conditions are O.K., after the engine coolant
temperature has cooled to normal, continue driving your
vehicle.
If the engine coolant temperature does not cool down, or
your vehicle overheats again, have it checked as soon
as possible by your Lexus dealer.IF YOU HAVE A FLAT TIRE
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 pa rking brake and put the transmission
in ºPº.
4. Have everyone get out of the vehicle on the side away

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from traffic.
5. Read the following instructions thoroughly.
NOTICE
For vehicles equipped with the height control
switch, be sure to turn the ignition switch offbefore jacking. If this is not done, the vehicleheight adjustment function will operate, whichmay cause body damage.
CAUTION
When jacking, be sure to observe the following to
reduce the possibility of personal injury:
 Follow jacking instructions.
 Do not put any part of your body under a
vehicle supported by a jack. Personal injury
may occur.
Do not start or run the engine while your
vehicle is supported by the jack.
 Stop the vehicle on a level firm ground, firmly
set the parking brake and put the transmission
in ºPº. Block the wheel diagonally opposite to
the one being changed if necessary.
 Make sure to set the jack properly in the jack
point. Raising the vehicle with jack improperly
positioned will damage the vehicle or may
allow the vehicle to fall off the jack and cause
personal injury.
 Never get under the vehicle when the vehicle is
supported by the jack alone.
 Use the jack only for lifting your vehicle during
wheel changing.
 Do not raise the vehicle with someone in the
vehicle.
 When raising the vehicle, do not put an object
on or under the jack.
 Raise the vehicle only high enough to remove
and change the tire.
NOTICE