lexus LS400 1999 Electrical Components / LEXUS 1999 LS400 (OM50514U) Workshop Manual

SWITCHES
35
HEADLIGHT SWITCH
12L001

SWITCHES
36To turn the lights on, twist the knob on the end of the
lever.
FIRST CLICKSTOP: Only the parking, tail, license
plate, side marker and instrument panel lights turn on.
SECOND CLICKSTOP: Headlights also turn on.
THIRD CLICKSTOP (ºAUTOº): The headlights and all
other lights automatically turn on depending on the
darkness of the surroundings.*
Vehicles sold in U.S.A.:
When the headlights are on,
the headlight indicator lights up in the instrument cluster.
Vehicles sold in Canada: When the tail lights are on,
the tail light indicator lights up in the instrument cluster.
Manually twist the knob to the second clickstop to
turn on the headlights if they are needed
immediately when entering a dark tunnel, parking
structure, etc.
12L002a

SWITCHES
37
The automatic light control sensor is on top of the
driver's side instrument panel.
Do not place anything on the instrument panel, and/or do
not affix anything on the windshield to block this sensor.
When the headlights come on, the lights automatically
turn off about 30 seconds after any of the doors is
opened and closed with the ignition key turned to the
ºACCº or ºL
OCKº position.** To turn them on again, turn
the ignition key to the ºONº position, or turn the headlight
switch off and then twist the knob until the first or second
clickstop. If you are going to park for over one week,
make sure the headlight switch is off.
When the headlight switch is on with all the doors locked,
pushing the ºLOCKº button on the wireless remote
control key turns off the headlights.
NOTE: *The operating condition or sensitivity can be changed. **The time before turning off the lights can
be changed. Ask your Lexus dealer for details.
Daytime Running Light System
The headlights turn on at reduced intensity when the
parking brake is released with the engine started, even
with the light switch in the ºOFFº position. They will not
go off until the ignition switch is turned off.
To turn on the other exterior lights and instrument panel
lights, twist the knob to the first clickstop.
Twist the knob to the second clickstop to turn on the
headlights to full intensity for driving at night.
When setting the knob to the third clickstop (ºAUTOº),
the headlights will automatically adjust to full intensity
and/or turn on the other lights depending on the
darkness of the surroundings. Likewise, as the
surroundings become brighter, the headlights will turn to
reduced intensity, ultimately turning off the other lights.
NOTICE
To prevent the battery from being discharged, do not leave the lights on longer than necessarywhen the engine is not running.

SWITCHES
38
Automatic headlight leveling system
(Vehicles with discharge headlight only)
As the headlight beam level is always maintained
automatically at the proper level in all loading conditions,
your headlights do not dazzle other road users.
If this system fails, the multi information display shows
a message ºHEADLIGHT LEVELINGº. If this occurs,
have your vehicle checked by Lexus dealer.
HEADLIGHT DIMMER ANDTURN SIGNAL SWITCH

SWITCHES
39
12L003
For high beam, push the lever forward. Pull it back
for low beam. For the headlight flasher, pull it
further back.
A blue light in the instrument cluster indicates high beam
or headlight flasher is on.
The headlight flasher works even when the headlight
switch is off.

SWITCHES
40
12L004
For signaling turns, move the lever up or down in the
conventional manner.
The ignition key must be in the ºONº position.
The turn signal is self±cancelling after a turn, but after a
lane change, you may have to cancel it by hand. You can
also signal a lane change by moving the turn signal lever
partway and holding it there.
If the green light in the instrument cluster flashes faster
than normal, it indicates that the front or rear turn signal
bulb has burned out. If this indicator light does not come
on, the fuse or the indicator light itself has probably
failed.

SWITCHES
41
FOG LIGHT SWITCH
12L005
To turn on the fog lights, turn the switch to the ºONº
position. The fog lights come on only when the
headlights are on low beam.WINDSHIELD WIPER ANDWASHER SWITCH
12L006±1

SWITCHES
42

1Interval adjuster 2Washer on
To turn the wipers on, move the lever down until you
reach the desired speed setting.
The ignition key must be in the ºONº position.
There are 3 settings:
ºINTº position: Intermittent operation
ºLOº position: Low speed operation
ºHIº position: High speed operation
Twist the interval adjuster upward to increase the
wiping time interval between sweeps, and
downward to decrease it.
The wiper lever must be in the ºINTº position.
The time interval between sweeps is shortened when
the vehicle speed increases. When the vehicle speed
reaches more than about 20 km/h (12 mph) with the
interval adjuster in ºFº position, the time interval
becomes the shortest 1.5 seconds.
If you stop the vehicle with the wiper switch in the ºLOº
position, the wiper speed automatically changes from
low speed to intermittent operation speed.* This
function does not work when the interval adjuster is in
the ºFº position.
NOTE:
*This feature can be set inoperative. Ask your
Lexus dealer for details.
For mist wiper operation (a single wipe), pull the lever toward you and release it.
To make the washer squirt, push the button on the
end of the lever.
If the wiper lever is in the ºOFFº position, the wipers will
automatically operate a couple of times and a few
seconds later, make a single wipe again to sweep the
windshield completely.* The last sweep does not
happen if the vehicle speed exceeds about 170 km/h
(106 mph).
NOTE: *The last single wipe can be set inoperative.
Ask your Lexus dealer for details.
The warning message ºLOW WASHER FLUIDº is
displayed in the multi information display when the fluid
level in the tank becomes nearly empty. For information
on adding washer fluid, see ºAdding washer fluidº on
page 459.

SWITCHES
43
In cold weather, warm the windshield with the defroster
before using the washer. This will help prevent icing,
which could block your vision.
NOTICE
Do not operate the wipers if the windshield is dry.
It may scratch the glass.

SWITCHES
44
HEADLIGHT CLEANER SWITCH(CANADA ONLY)
12L007a
To spray fluid on the headlights, push the switch
with the headlights on.
The ignition key must be in the ºONº position.
The warning message ºLOW WASHER FLUIDº is
displayed in the multi information display when the fluid
level in the tank becomes nearly empty. For information
on adding washer fluid, see ºAdding washer fluidº on
page 459.
NOTICE
Do not turn the headlight cleaner on with the tank
empty. It may cause the cleaner motor tooverheat.