2006 Lexus GS430 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2006 PROD. OWNER'S MANUAL (OM30786U)

GAS STATION INFORMATION
Fuel selection:
Premium unleaded gasoline with an Octane Rating of 91
(Research Octane Number 96) or higher required for
optimum engine performance. However, if such premium
type cannot be obtained, you may use unleaded gasoline
with an Octane Rating as low as 87 (Research Octane
Number 91).
 Fuel tank capacity:
71 L (18.7 gal., 15.6 lmp.gal.)
 Engine oil:
“Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC multigrade engine oil.
Recommend oil viscosity − SAE 5W−30 if normal
temperatures are below 38 C (100F)
Oil capacity: L (qt., lmp.qt.)
Drain and refill with filter without filter GS430 5.1 (5.4, 4.5) 4.5 (4.8, 4.0)
GS300 (2WD) 6.3 (6.6, 5.5) 5.9 (6.2, 5.1)
GS300 (4WD) 6.4 (6.7, 5.6) 6.0 (6.3, 5.2)
See page 530 for detailed information.
 Engine coolant:
Capacity: GS430 − 10.1 L (10.7 qt., 8.9 lmp.qt.)
GS300 − 9.1 L (9.6 qt., 8.0 lmp.qt.) Coolant type −
”Toyota Super Long Life Coolant” or similar
high quality ethylene glycol based non −silicate, non −amine,
non−nitrite, and non −borate coolant with long −life hybrid
organic acid technology (Coolant with long −life hybrid
organic acid technology is a combination of low phosphates
and organic acids.)
Do not use plain water alone.
For checking the engine coolant, see page 534.
 Automatic transmission:
Fluid type − “Toyota Genuine ATF Type WS”
See page 540 or 544 for detailed information.
 Tire information:
See page 548 through 570 for detailed information.
 Tire inflation pressure:
Tire size: GS430 − 245/40R18 93Y or P245/40R18 93V
GS300 − 225/50R17 94W or P225/50R17 93V
Tire inflation pressure:
Front 230 kPa (2.3 kgf/cm
2 or bar, 33 psi)
Rear 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add the
tire inflation pressure given below to the front tires and rear
tires, but never exceed the maximum cold tire inflation
pressure molded on the tire sidewall.
GS430 60 kPa (0.6 kgf/cm
2 or bar, 9 psi)
GS300 50 kPa (0.5 kgf/cm2 or bar, 7 psi)

cm1
You should know as much about the quality and
importance of proper maintenance of your new
vehicle as the people who built it.
The Lexus authorized Repair Manual tells you
how to maintain your vehicle and enables you to
correctly perform your own maintenance.
The best way to keep your new vehicle in top running
order is to maintain it properly from the moment you
drive it off the showroom floor.
The Lexus authorized Repair Manual is packed with
literally everything you need to know to perform your
own maintenance in virtually every area of your new
vehicle.

cm2
Maintenance procedures for the engine, chassis,
body, electrical system, and more, are clearly
explained and illustrated.
Periodic maintenance and tuneup
Periodic maintenance and tuneup helps to prevent small
problems from growing into larger ones later on. The repair
manual outlines exactly what maintenance is required and
clearly explains how to do the work yourself stepbystep.
Areas covered include such things as spark plug replacement,
valve clearance adjustment and engine oil and filter
replacement.
Where to obtain the Repair Manual
The repair manual for GS430, GS300 may be purchased from
any Lexus dealer or call the Material Distribution Center. To
purchase the repair manual, please contact your Lexus dealer
or the Material Distribution Center tollfree at
18006222033.

PICTORIAL INDEX
i
INSTRUMENT PANEL (Vehicles with navigation system)
G00011b
Fourwheel drive models

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
iiPage
1
Power window switches 38, 59
. . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 202
. . . . . . . . . . .
3 Window lock switch 60
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Door lock switch 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Side vents 274
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Engine switch 348
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Automatic air conditioning controls 258
. . . . . . . . . .
8 Audio system 280
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Clock 106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
10 Center vents 273
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Outside temperature display 109
. . . . . . . . . . . . . . . . .
12 Touch screen 219
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Navigation system display (See the separate
“Navigation System Owner’s Manual”)
13 Security indicator light 41
. . . . . . . . . . . . . . . . . . . . . . .
14 Rear window and outside rear view
mirror defogger switch 58 . . . . . . . . . . . . . . . . . . . . . . .
15 Front passenger’s seat belt reminder light 78 . . . . .
16 Emergency flasher switch 62
. . . . . . . . . . . . . . . . . . . . Page
17 Glove box
113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Trunk lid opener main switch 130
. . . . . . . . . . . . . . . .
19 Tire pressure warning select switch 448
. . . . . . . . . .
20 Cigarette lighter 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Cupholders 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Seat heater switches or Seat ventilator/heater
switches 63, 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch
(Twowheel drive models only) 425 . . . . . . . . . . . . . .
24 Driving pattern selector switch 359
. . . . . . . . . . . . . . .
25 Damping mode select switch
(GS430 only) 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Coin box 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Ashtray 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
28 Automatic transmission selector lever 359 . . . . . . .
29 Tire pressure warning reset switch 446
. . . . . . . . . . .
30 Hood lock release lever 128
. . . . . . . . . . . . . . . . . . . . .
31 Parking brake pedal 358
. . . . . . . . . . . . . . . . . . . . . . . . .
32 Switch box xi
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PICTORIAL INDEX
iii
INSTRUMENT PANEL (Vehicles without navigation system)
G00012b
Fourwheel drive models

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
ivPage
1
Power window switches 38, 59
. . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 202
. . . . . . . . . . .
3 Window lock switch 60
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Door lock switch 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Side vents 274
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Engine switch 348
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Automatic air conditioning controls 258
. . . . . . . . . .
8 Audio system 280
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Clock 106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
10 Center vents 273
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Outside temperature display 109
. . . . . . . . . . . . . . . . .
12 Touch screen 219
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 Security indicator light 41
. . . . . . . . . . . . . . . . . . . . . . .
14 Rear window and outside rear view
mirror defogger switch 58 . . . . . . . . . . . . . . . . . . . . . . .
15 Front passenger’s seat belt reminder light 78 . . . . .
16 Emergency flasher switch 62
. . . . . . . . . . . . . . . . . . . . Page
17 Glove box
113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Trunk lid opener main switch 130
. . . . . . . . . . . . . . . .
19 Tire pressure warning select switch 448
. . . . . . . . . .
20 Cigarette lighter 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Cupholders 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Seat heater switches or Seat ventilator/heater
switches 63, 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch
(Twowheel drive models only) 425 . . . . . . . . . . . . . .
24 Driving pattern selector switch 359
. . . . . . . . . . . . . . .
25 Damping mode select switch
(GS430 only) 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Coin box 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Ashtray 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
28 Automatic transmission selector lever 359 . . . . . . .
29 Tire pressure warning reset switch 446
. . . . . . . . . . .
30 Hood lock release lever 128
. . . . . . . . . . . . . . . . . . . . .
31 Parking brake pedal 358
. . . . . . . . . . . . . . . . . . . . . . . . .
32 Switch box xi
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PICTORIAL INDEX
v
INSTRUMENT CLUSTER (Vehicles sold in U. S. A.)
G00041