2000 Lexus LS400 service indicator

GAUGES, METERS AND SERVICE REMINDER INDICATORS
80

COMFORT ADJUSTMENT
156
16L136±2
This indicator comes on when the ignition key is
turned to the ªACCº or ªONº position. It goes off
after about 6 seconds. This means the front seat
belt pretensioners are operating properly.
This warning light system monitors the airbag sensor
assembly, inflator, seat belt pretensioner assembly,
warning light, interconnecting wiring and power sources.
(For details, see ªService reminder indicators and
warning buzzersº on page 62.)

COMFORT ADJUSTMENT
160
16L241
This front seat belt pretensioner system has a service
reminder indicator to inform the driver of operating
problems. If any of the following conditions occurs, this
indicates a malfunction of the pretensioners. Contact
your Lexus dealer as soon as possible to service the
vehicle.
When the ignition key is turned to the ªACCº or ªONº
position, the light does not come on or flashes.
 The light flashes while driving.
 If either front seat belt does not retract or cannot be
pulled out due to a malfunction or activation of the
pretensioner.
 The front seat belt pretensioner assembly or
surrounding area has been damaged. 
The front parts of the vehicle (shaded in the
illustration) were involved in an accident that did not
cause the seat belt pretensioners to operate.
 The front seat belt pretensioner assembly is
scratched, cracked, or otherwise damaged.

COMFORT ADJUSTMENT
165
The indicator comes on when the ignition key is
turned to the ºACCº or ºONº position. It goes off
after
about 6 seconds. This means the SRS airbags
are operating properly.
The SRS warning light system monitors the airbag
sensor assembly, side airbag sensor assemblies,
inflators, warning light, interconnecting wiring and power
sources. (For details, see ºService reminder indicators
and warning buzzersº on page 62.)
16L029

COMFORT ADJUSTMENT
182
16L136-2
The SRS airbag system has an indicator to inform the
driver of operating problems. If either of the following
conditions occurs, this indicates a malfunction of the
airbags. Contact your Lexus dealer as soon as possible
to service the vehicle.
When the ignition key is turned to the ªACCº or ªONº
position, the light does not come on, stays on or
flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front
passenger airbags fail. If the light flashes, the side
airbags fail.

STARTING AND DRIVING
283
Keep the trunk lid closed while driving. An
open or unsealed trunk lid may cause exhaust
gases to be drawn into the vehicle.
 To allow proper operation of your vehicle's
ventilation system, keep the inlet grilles in front
of the windshield clear of snow, leaves, or other
obstructions.
 If you smell exhaust fumes in the vehicle, drive
with the windows open and the trunk lid closed.
Have the cause immediately located and
corrected.BEFORE STARTING THE ENGINE
1. Check the area around the vehicle before entering it.
2. Adjust seat position, seatback angle, head restraint
height and steering wheel angle.
3. Adjust the inside and outside rear view mirrors.
4. Lock all doors.
5. Fasten seat belts.
Remember to check that the service reminder indicators
function when turning the key to ºONº, and check the fuel
gauge to see that you have sufficient fuel.

MAINTENANCE
391
Vehicle interior
Items listed below should be checked regularly, e.g.
while performing periodic services, cleaning the
vehicle, etc.
Lights
Make sure the headlights, stop lights, tail lights, turn
signal lights, and other lights are working. Check
headlight aim.
Service reminder indicators and warning buzzers
Check that all service reminder indicators and warning
buzzers function properly. Steering wheel
Check that it has the specified free play. Be alert for
changes in steering condition, such as hard steering,
excessive free play or strange noise.
Seats
Check
that all front seat controls such as seat adjusters,
seatback recliner, etc. operate smoothly. Check that the
head restraints move up and down smoothly and that the
locks hold securely in any latched position.
Seat belts
Check that the seat belt system such as buckles,
retractors and anchors operate properly and smoothly.
Make sure the belt webbing is not cut, frayed, worn or
damaged.
Accelerator pedal
Check the pedal for smooth operation and uneven pedal
effort or catching.
Brake pedal
Check the pedal for smooth operation and the proper
clearance and free play. Check the brake booster
function.
Brakes
At a safe place, check that the brakes do not pull to one
side when applied.

ENGINE
409
Gasoline containing MMT
Some gasoline contain an octane enhancing
additive called MMT (Methylcyclopentadienyl
Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline that
contains MMT. If fuel containing MMT is used, your
emission control system may be adversely affected.
The Malfunction Indicator Lamp on the instrument
cluster may come on. If this happens, contact your
Lexus dealer for service.
Gasoline quality
In a very few cases, you may experience driveability
problems caused by the particular gasoline that you are
using. If you continue to have unacceptable driveability,
try changing gasoline brands. If this does not rectify your
problem, then consult your Lexus dealer.
NOTICE
Do not use gasohol other than stated above. It will cause fuel system damage or vehicleperformance problems.
If drivability problems are encountered (poorhot starting, vaporizing, engine knock, etc.),discontinue its use.
Take care not to spill gasohol during refueling.Gasohol may cause paint damage.
Fuel tank capacity
83 L (21.9 gal., 18.3 lmp.gal.)
FACTS ABOUT ENGINE OIL CONSUMPTION
Functions of engine oil
Engine oil has the primary function of lubricating and
cooling the inside of the engine, and plays a major role
in maintaining the engine in proper working order.
Engine oil consumption
It is normal that an engine should consume some
engine oil during normal engine operation. The
causes of oil consumption in a normal engine are as
follows.
Oil is used to lubricate pistons, piston rings and
cylinders. A thin film of oil is left on the cylinder wall
when a piston moves downwards in the cylinder.
High negative pressure generated when the vehicle
is decelerating sucks some of this oil into the
combustion chamber. This oil as well as some part of
the oil film left on the cylinder wall is burned by the
high temperature combustion gases during the