1999 Lexus LS400 service indicator

COMFORT ADJUSTMENT
156The 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 is
operating properly.
The SRS warning light system monitors the airbag
sensor assemblies, inflators, seat belt pretensioners,
warning
light, interconnecting wiring and power sources.
(For details, see ºService reminder indicators and
warning buzzersº on page 62 for instructions.)
16L029

COMFORT ADJUSTMENT
173
16L136-2
This SRS has an indicator to inform the driver of
operating problems. If either of the following conditions
occurs, this indicates a malfunction of the airbags and/or
seat belt pretensioners. Even if the seat belt
pretensioners should fail, the seat belts will operate
conventionally. Contact your Lexus dealer as soon as
possible to service the vehicle.
 The light does not come on as described above.
 The light 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 and/or seat belt pretensioners fail.

STARTING AND DRIVING
275
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 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
382
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 freeplay. Be alert for
changes in steering condition, such as hard steering,
excessive freeplay 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 freeplay. Check the brake booster
function.
Brakes
At a safe place, check that the brakes do not pull to one
side when applied.

ENGINE
401
Improved gasolines
The American Automobile Manufacturers
Association (AAMA) has developed a specification
of improved gasolines. The AAMA specification
offers optimal fuel information for better vehicle
performance and better protection of your engine.
Lexus recommends the use of gasolines that meet the
AAMA specification, if available, for improved drivability
and emission control system.
Gasolines containing MTBE
Gasolines that contain MTBE (Methyl T ertiary±Butyl
Ether) are available in the market. If you use a
gasoline mixed with MTBE, make certain that it does
not contain more than 15% of MTBE.
Gasolines containing MMT
Some gasolines contain an octane±enhancing
additive called MMT (methylcyclopentadienyl
manganese tricarbonyl).
Lexus does not recommend the use of gasolines that
contain MMT. If fuels containing MMT are 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.
Gasolines containing alcohol
Gasohol is a mixture of gasoline and ethanol. If you
use gasohol in your Lexus, be sure that it is
unleaded, has an octane rating no lower than 87 and
does not contain more than 10% ethanol. Lexus
does not recommend the use of gasolines
containing methanol.
If you use gasoline containing methanol, use only
gasoline meeting the requirements above and also
containing less than 5% methanol with cosolvents and
corrosion inhibitors for methanol.

ELECTRICAL COMPONENTS
439
No.FUSEAMPERECIRCUIT
1 TURN7.5Turn signal lights
2 WIPER20Windshield wipers
3 HEATER10
Air conditioning system,
Rear window defogger,
Multiport fuel injection
system/sequential multiport fuel
injection system
4 FR FOG15Fog lights
5 ECU±IG10Power steering control system,
Charging system,
Vehicle skid control system
6 PWR±IG15
Automatic headlight leveling
system, Moon roof,
Headlight cleaner,
Power seat switch,
Tilt and telescopic steering,
Shift lock system
7 GAUGE10
Gauges and meters, service
reminder indicators and
warning buzzers,
Back±up lights,
Vehicle skid control system,
Multiport fuel injection
system/sequential multiport fuel
injection system, Automatic
transmission system
8 IGN10SRS, Multiport fuel injection
system/sequential multiport fuel
injection system