1999 LEXUS SC300 air conditioning

HOW TO USE THIS MANUAL
iv
SECTION 2 ± AIR CONDITIONING AND
AUDIO
The features of the vehicle's air conditioning and audio are
explained in detail. Be sure to read this section so that you can
make full use of them.
SECTION 3 ± STARTING AND DRIVING
Starting the engine, driving, stopping, operation of features
affecting vehicle handling, hints on vehicle safety and safe
driving techniques are all explained. Please read everything
in this section, and remember ± drive safely!
SECTION 4 ± IN CASE OF AN EMERGENCY
This section explains what to do in the event of an urgent
situation such as the engine not starting or getting a flat tire,
etc. If such a problem occurs, check the contents of this
Owner 's Manual and follow the instructions given.
SECTION 5 ± MAINTENANCE
This section explains the importance of regular maintenance.
Regular and periodic inspection and maintenance of your
Lexus will help to keep your vehicle in its best condition.
SECTION 6 ± SERVICE PROCEDURES AND
SPECIFICATIONS
Simple maintenance procedure and service data are provided
here for your reference should you wish to perform inspection
and maintenance yourself.
INDEX
The page number is listed for each item in the Owner's
Manual so that you can rapidly find the item and page you are
searching for.
GAS STATION INFORMATION
The information you need to know for appropriate servicing
at the gas station is provided here.
QUICK INDEX
This is designed so that you can quickly find the needed
information when an urgent situation arises.
Safety symbol

For detailed information, refer to the description given in each section.
PICTORIAL INDEX
viiiPage
1
Driving position memory switch 168
. . . . . . . . . . . .
2 Power rear view mirror control switch 111 . . . . . . . .
3 Door lock switch and power window
switches 30, 40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Fuel filler door opener 85
. . . . . . . . . . . . . . . . . . . . .
5 Trunk lid opener 84
. . . . . . . . . . . . . . . . . . . . . . . . . .
6 Hood lock release lever 81
. . . . . . . . . . . . . . . . . . . .
7 Headlight, turn signal and fog
light switch 32, 37
. . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Traction control system off switch 246
. . . . . . . . . . .
9 Windshield wiper and washer switch 38
. . . . . . . . .
10 Cruise control switch 242
. . . . . . . . . . . . . . . . . . . . . Page
11 Emergency flasher switch
44
. . . . . . . . . . . . . . . . . .
12 Automatic air conditioning controls 177
. . . . . . . . .
13 Car audio 186
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Parking brake lever 215
. . . . . . . . . . . . . . . . . . . . . .
15 Driving pattern selector switch 220
. . . . . . . . . . . . .
16 Seat heater switches 45
. . . . . . . . . . . . . . . . . . . . . . .
17 Ashtray 69
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Automatic transmission selector lever 217 . . . . . . .
19 Cup holder 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Cup holder 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Glovebox 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each section.
PICTORIAL INDEX
xPage
1
Driving position memory switch 168
. . . . . . . . . . . .
2 Power rear view mirror control switch 111 . . . . . . . .
3 Door lock switch and power window
switches 30, 40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Fuel filler door opener 85
. . . . . . . . . . . . . . . . . . . . .
5 Trunk lid opener 84
. . . . . . . . . . . . . . . . . . . . . . . . . .
6 Hood lock release lever 81
. . . . . . . . . . . . . . . . . . . .
7 Headlight, turn signal and fog
light switch 32, 37
. . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Traction control system off switch 246
. . . . . . . . . .
9 Windshield wiper and washer switch 38
. . . . . . . . .
10 Cruise control switch 242
. . . . . . . . . . . . . . . . . . . . . Page
11 Emergency flasher switch
44
. . . . . . . . . . . . . . . . . .
12 Automatic air conditioning controls 177
. . . . . . . . .
13 Car audio 186
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Parking brake lever 215
. . . . . . . . . . . . . . . . . . . . . .
15 Driving pattern selector switch 232
. . . . . . . . . . . . .
16 Seat heater switches 45
. . . . . . . . . . . . . . . . . . . . . . .
17 Ashtray 69
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Automatic transmission selector lever 229 . . . . . . .
19 Cup holder 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Cup holder 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Glovebox 72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GAUGES, METERS AND SERVICE REMINDER INDICATORS
51
The gauge indicates the engine coolant temperature when
the ignition switch is on. The engine operating
temperature
will vary with changes in weather and engine
load.
If the needle points to the red zone or higher, stop your vehicle
and allow the engine to cool.
Your vehicle may overheat during severe operating
conditions, such as:

Driving up a long hill on a hot day.

Reducing speed or stopping after high speed driving.

Idling for a long period with the air conditioning on in
stop±and±go traffic.

Towing a trailer.
NOTICE

Do not remove the thermostat in the engine cooling
system as this may cause the engine to overheat. The
thermostat is designed to control the flow of coolant to
keep the temperature of the engine within the specified
operating range.

Do not continue driving with an overheated engine.
See ºIf your vehicle overheatsº on page 280.
TACHOMETER

GAUGES, METERS AND SERVICE REMINDER INDICATORS
56If the brake fluid level is correct ...
Have the warning system checked by your Lexus dealer.
(b) Seat Belt Reminder Light and Buzzer
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder
light flashes and buzzer comes on if the driver's seat
belt is not fastened. Unless the driver fastens the belt, the light
stays flashing and the buzzer stops after about 4 to 8 seconds.
(c) SRS Airbag Warning Light
This 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 airbag system is operating
properly.
The SRS airbag warning light system monitors the airbag
sensor assembly, inflators, warning light, interconnecting
wiring and power sources.
If either of the following conditions occurs, this indicates a
malfunction somewhere in the parts monitored by the
warning light system. Contact your Lexus dealer as soon as
possible to service the vehicle.

The light does not come on as described above or remains
on.

The light comes on while driving.
(d) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, stop the vehicle, turn off
the engine, and check for the cause. Look first at the engine
drive belt.

If it is loose or broken, the generator will not charge the
battery properly.

If the belt is O.K., there is a problem somewhere in the
charging system.
The engine ignition will continue to operate, however, until
the battery is discharged. Turn off the air conditioning,
blower, radio, etc., and drive directly to the nearest Lexus
dealer or repair shop.
NOTICE
Do not continue driving if the engine drive belt is broken
or loose.
(e) Low Oil Pressure Warning Light
This light warns that the engine oil pressure is too low.
If it flickers or stays on while you are driving, pull off the road
to a safe place and stop the engine immediately. Call a Lexus
dealer or qualified repair shop for assistance.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
64
INSTRUMENT PANEL LIGHTCONTROL
To adjust the brightness of the instrument panel lights,
turn the knob.
When the headlight switch is in the first or second click stop,
you can also adjust the brightness of the displays on the audio
and air conditioning systems using this knob.

SECTION 2
176AIR CONDITIONING AND AUDIO
Automatic
air conditioning controls .
. . . . . . . . . . . . . . . . . . .
177
Audio system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
186

AIR CONDITIONING AND AUDIO
177
AUTOMATIC AIR CONDITIONING CONTROLS