Lexus GX470 2003 Electrical Components / LEXUS 2003 GX470 (OM60A45U) Service Manual

SWITCHES
28The low washer fluid warning light in the instrument cluster
comes on when the fluid level in the tank becomes nearly
empty. For information on adding washer fluid, see “Adding
washer fluid” on page 454.
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.
Raindrop detection type

1 Automatic control adjuster

2 Washer on To turn the wipers on, move the lever down until you reach
the desired speed setting.
The ignition switch must be in the “ON” position.
There are 3 settings:
“AUTO” position: Automatic operation
“LO” position: Low speed operation
“HI” position: High speed operation
Automatic operation
The wiper speed is determined by the amount of raindrops
and sunlight detected by the automatic wiper control
sensor.
Twist
the automatic control adjuster in the “–” direction to
lower the sensitivity, and the “+” direction to boost the
sensitivity.
The sensor is on the inside of the windshield as shown above.

SWITCHES
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Even if the wiper lever is in the
“AUTO” position, the system will
switch to intermittent operations in the following conditions:
 When the windshield gets extremely cold (at less than
–10 C or 14 F)
 When the system malfunctions
However, when the windshield gets extremely hot (at more
than 90C or 194F), the wipers do not operate even if the
wiper lever is in the “AUTO” position.
When the ignition switch is turned off with the wiper lever in the
“AUTO” position, and then the ignition switch is turned on
again, the automatic operation may not work even if raindrops
are on the windshield.
In this case, move the lever to another position and return it to
the “AUTO” position again.
If you stop the vehicle with the wiper switch in the “LO” position,
the wiper speed automatically changes from low speed to
intermittent operation speed.* This function does not work
when the automatic control adjuster is in the “+” position.
NOTE:
*This feature can be deactivated.
Ask your Lexus dealer for details.
CAUTION
Be careful not to get your fingers caught between the
wipers and windshield.
When the wiper lever is in the “AUTO” position with the
ignition switch on, the wipers could operate
automatically in the following cases:
 If you touch the upper center of the windshield
adjacent to the sensor.
 If you wipe the upper center of the windshield
(adjacent to which the sensor is located) with a towel.
 If the windshield vibrates.
 If you touch the sensor.
NOTICE
Do not apply detergent to or wet the automatic wiper
control sensor when cleaning the inside of the
windshield.

SWITCHES
30To make the washer squirt, pull the lever toward you and
release it.
If the wiper lever is in the “OFF” position, the wipers will
automatically make 3 wipes and then a single wipe later to
sweep the windshield completely.* The interval between the
3 wipes and the last wipe will depend on the vehicle speed. The
last sweep does not happen if the vehicle speed exceeds about
170 km/h (106 mph).
NOTE:
*The last single wipe can be deactivated.
Ask your Lexus dealer for details.
The low washer fluid warning light in the instrument cluster
comes on when the fluid level in the tank becomes nearly
empty. For information on adding washer fluid, see “Adding
washer fluid” on page 454.
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.
REAR WINDOW WIPER AND WASHER SWITCH
 1 Washer on during wiping

2 Washer on
To turn the wipers on, twist the knob at the end of the lever.
The ignition key must be in the “ON” position.
There are 2 settings:
“INT” position: Intermittent operation
“ON” position: Low speed operation
If you stop the vehicle with the rear window wiper switch in the
“ON” position, the wiper speed automatically changes from low
speed to intermittent operation speed.
To make the washer squirt, twist the knob downward to
position 2.

SWITCHES
31
To make the washer squirt while operating in “ON”
position, twist the knob upward to position 1.
The knob automatically returns from these positions after you
release it.
The low washer fluid warning light in the instrument cluster
comes on when the fluid level in the tank becomes nearly
empty. For information on adding washer fluid, see “Adding
washer fluid” on page 454.
NOTICE
Do not operate the rear window wiper if the rear window
is dry. It may scratch the glass.
REAR WINDOW DEFOGGER
SWITCH
 Vehicles with navigation system
 Vehicles without navigation system

SWITCHES
32To turn the electric rear window defogger on, push the
switch.
The ignition key must be in the “ON” position.
The thin heater wires on the inside of the rear window will
quickly clear the surface. An indicator light will illuminate to
indicate the defogger is operating.
The system will automatically shut off when the defogger has
operated about 15 minutes.
If further defrosting or defogging is desired, simply actuate the
switch again. When the
surface has cleared, push the switch
once again to turn the defogger of f. Continuous use may cause
the battery to discharge, especially during stop −and−go
driving. The defogger is not designed to dry rain water or to
melt snow.
NOTICE
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
 To prevent the battery from being discharged, turn
the switch off when the engine is not running.
OUTSIDE REAR VIEW MIRROR
DEFOGGER SWITCH
To turn the electric outside rear view mirror defogger on,
push the switch.
The ignition key must be in the “ON” position.
The thin heater wires on the heater panels in the outside rear
view mirrors will quickly clear the surface. Keep your hands off
the mirror faces when the switch is on. An indicator light will
illuminate to indicate the defogger is operating.
The system will automatically shut off when the defogger has
operated about 5 minutes.

SWITCHES
33
CAUTION
Since the mirror surfaces can get hot, do not touch them
when the switch is on.
If further defrosting or defogging is desired, simply actuate the
switch again. When the surface has cleared, push the switch
once again to turn the defogger of f. Continuous use may cause
the battery to discharge, especially during stop −and−go
driving. The defogger is not designed to dry rain water or to
melt snow.
If the outside rear view mirrors are heavily coated with ice, use
a spray de −icer before operating the switch.
NOTICE
To prevent the battery from being discharged, turn the
switch off when the engine is not running.
POWER WINDOW SWITCHES
 1 For driver’s window

2 For front passenger’s window

3 For left rear window

4 For right rear window
To raise or lower the windows, use the switch on each
door. The passengers’ windows can also be controlled by
the switches on the driver’s door.
The power windows work when the ignition key is in the “ON”
position.
Key off operation: Even if the ignition key is turned to the
“ACC” or “LOCK” position with all the doors closed, the window
can be operated until a front door is opened (or for 43 seconds).

SWITCHES
34
Operating the switches
To raise or lower the window, pull the switch halfway up or
push it halfway down.
Automatic operation: To fully raise or lower the window
automatically, pull the switch fully up or push it fully down.
To stop the window partway, lightly push or pull the switch in the
opposite direction and then release it.
Operating the window lock switch
 Indicator lights
With the window lock switch pressed in, only the driver’s
window can be raised or lowered.
The indicator lights on the switch tell you which of the switches
can be operated.

SWITCHES
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Operating the windows from outside the
vehicle
The windows can be operated using an ignition key.*NOTE:
* This feature can be deactivate.
Ask your Lexus dealer for details.
 Close  Open
Insert the ignition key into the key hole on the driver’s
door.
To close the windows: Turn the key in the locking direction
and hold it.
After the doors are locked, the windows begin to close. To stop
in the middle, return the key. To open the windows:
Turn the key in the unlocking direction
and hold it.
After the door is unlocked, the windows begin to open. To stop
in the middle, return the key.
The windows also can be opened using the wireless remote
control. For details, see page 15.
Jam protection function
During automatic raising operation or key off raising operation,
the window stops and is lowered if something gets caught
between the window and window frame.
If the window receives a strong impact, this function may work
even if nothing is caught.
If the battery is disconnected or run down
The power windows may not operate automatically and the jam
protection function will not function correctly after you
reconnect, replace or recharge the battery. At this time, the
indicator lights of the switches will flash. In any of these cases,
you should normalize the power windows.
To normalize the power windows:
1. Push down the power window switches of each door and
lower the windows halfway.
2. Pull up the switches until the windows close and hold the
switches for a second.
Make sure that the windows open and close automatically. If
the power windows cannot be operated properly, have it
checked by your Lexus dealer.

SWITCHES
36
CAUTION
To avoid serious personal injury, you must do the
following.
Before you close the power windows, always make
sure there is nobody around the power windows. You
must also make sure the heads, hands and other
parts of the bodies of all occupants are kept
completely inside the vehicle. If someone’s neck,
head or hands get caught in a closing window, it
could result in a serious injury. When anyone closes
the power windows, make sure he or she operates the
windows safely.
 When small children are in the vehicle, never let them
use the power window switches without supervision.
Use the window lock switch to prevent them from
making unexpected use of the switches.
 Be sure to remove the ignition key when you leave
your vehicle.
 Never leave anyone (particularly a small child) alone
in your vehicle, especially with the ignition key still
inserted. Otherwise, he/she could use the power
window switches and get trapped in a window.
Unattended person (particularly a small child) can be
involved in a serious accident.
 Never try jamming any part of your body to activate
the jam protection function intentionally.
 The jam protection function may not work if
something gets caught just before the window fully
closed.
EMERGENCY FLASHER SWITCH
To turn on the emergency flashers, push the switch. To
turn them off, push the switch again.
All the turn signal lights will flash. The emergency flashers will
work with the engine running or off and with or without the
ignition key.
Turn on the emergency flashers to warn other drivers if you
must stop your vehicle where it might be a traffic hazard.
Always pull your vehicle as far off the road as possible.
The turn signal light switch will not work when the emergency
flashers are in operation.
NOTICE
To prevent the battery from being discharged, do not
leave the switch on longer than necessary when the
engine is not running.

SWITCHES
37
SEAT HEATER SWITCHES
The seat heater has two dials; one marked “L” (for the
driver’s seat) and the other marked “R” (for the front
passenger’s seat). To turn the seat heaters on, turn the
dials forward. The indicator lights come on. To turn them
off, turn the dials backward until they stop. The indicator
lights go off.
You can adjust the heating temperature to 5 stages. To
increase the temperature, turn them forward. To decrease the
temperature, turn them backward.
The ignition key must be in the “ON” position.
CAUTION
Occupants must use caution when operating the seat
heater because they may experience minor burns even
at low temperatures. Use extra caution for;
 Babies, small children, elderly persons, sick persons
or handicapped persons
 Persons who have delicate skin
 Persons who are exhausted
 Persons who have taken alcohol or drugs which
induce sleep (sleeping drug, cold remedy, etc.).
To prevent the seat from overheating, do not use the
seat heater with a blanket, cushion, or other insulating
objects which cover the seat.
NOTICE
 Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into
the seat.
 When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol,
gasoline, etc.). They may damage the heater and seat
surface.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.