2004 Lexus GX470 differential

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
x
Page
1Driving position memory switches219
. . . . . . . . . . .
2Power window switches 48
. . . . . . . . . . . . . . . . . . . . . . .
3Power door lock switch 24
. . . . . . . . . . . . . . . . . . . . . . .
4Window lock switch 49
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5Power rear view mirror control switches 225 . . . . . .
6Side vents 249
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Headlight, turn signal and
fog light switches 33, 36, 37 . . . . . . . . . . . . . . . . . . . . . .
8Wiper and washer switch 37
. . . . . . . . . . . . . . . . . . . . . .
9Center vents 249
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10Emergency flasher switch 51
. . . . . . . . . . . . . . . . . . . . .
11Audio system 258
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12Multi-information display 75
. . . . . . . . . . . . . . . . . . . . . .
13Automatic air conditioning controls 236
. . . . . . . . . .
14Rear window defogger switch 45
. . . . . . . . . . . . . . . . . .
15Front passenger's seat belt reminder light 65 . . . . . .
16Glove box 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17Ashtray 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
18Cigarette lighter 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19Seat heater switches 53
. . . . . . . . . . . . . . . . . . . . . . . . . .
20Four-wheel drive control lever 401
. . . . . . . . . . . . . . . Page
21Automatic transmission selector lever 393
. . . . . . . .
22Parking brake lever 391
. . . . . . . . . . . . . . . . . . . . . . . . .
23Center differential lock switch 401
. . . . . . . . . . . . . . .
24Power outlet (12 VDC) 93
. . . . . . . . . . . . . . . . . . . . . . . . .
25Downhill assist control switch 425
. . . . . . . . . . . . . . .
26Electronic modulated suspension
control switch 419 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27Rear height control air suspension
switches 412 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28Ignition switch 389
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
292nd STRTº (second start) switch 401
. . . . . . . . . . . .
30Tire pressure warning system
selector switch 443 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31Cruise control switch 409
. . . . . . . . . . . . . . . . . . . . . . .
32Steering switches 280
. . . . . . . . . . . . . . . . . . . . . . . . . . .
33Instrument panel light control dial 86
. . . . . . . . . . . . . .
34Hood lock release lever 112
. . . . . . . . . . . . . . . . . . . . . .
35Fuel filler door opener 113
. . . . . . . . . . . . . . . . . . . . . . . .
36RSCA OFFº (roll sensing of curtain
shield airbags off) switch 193 . . . . . . . . . . . . . . . . . . . .
37Outside rear view mirror defogger switch 47 . . . . . . .
38Power outlet (115 VAC) main switch 95
. . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xii
Page
1Driving position memory switches219
. . . . . . . . . . .
2Power window switches 48
. . . . . . . . . . . . . . . . . . . . . . .
3Power door lock switch 24
. . . . . . . . . . . . . . . . . . . . . . .
4Window lock switch 49
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5Power rear view mirror control switches 225 . . . . . .
6Side vents 249
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Headlight, turn signal and
fog light switches 33, 36, 37 . . . . . . . . . . . . . . . . . . . . . .
8Wiper and washer switch 37
. . . . . . . . . . . . . . . . . . . . . .
9Center vents 249
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10Emergency flasher switch 51
. . . . . . . . . . . . . . . . . . . . .
11Rear view monitor/navigation system display
(For the navigation system, see the separate Navigation System Owner's Manualº.) 405 . . . . . . .
12Multi-information display 75
. . . . . . . . . . . . . . . . . . . . . .
13Automatic air conditioning controls
(See the separate Navigation System Owner's Manualº.) 236 . . . . . . . . . . . . . . . . . . . . . . . . . .
14Rear window defogger switch 45
. . . . . . . . . . . . . . . . . .
15Front passenger's seat belt reminder light 65 . . . . . .
16Glove box 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17Audio system 258
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18Ashtray 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
19Cigarette lighter 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20Seat heater switches 53
. . . . . . . . . . . . . . . . . . . . . . . . . . Page
21Four-wheel drive control lever
401
. . . . . . . . . . . . . . .
22Automatic transmission selector lever 393 . . . . . . . .
23Parking brake lever 391
. . . . . . . . . . . . . . . . . . . . . . . . .
24Center differential lock switch 401
. . . . . . . . . . . . . . .
25Power outlet (12 VDC) 93
. . . . . . . . . . . . . . . . . . . . . . . . .
26Downhill assist control switch 425
. . . . . . . . . . . . . . .
27Electronic modulated suspension
control switch 419 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28Rear height control air suspension
switches 412 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29Ignition switch 389
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
302nd STRTº (second start) switch 401
. . . . . . . . . . . .
31Tire pressure warning system
selector switch 443 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32Cruise control switch 409
. . . . . . . . . . . . . . . . . . . . . . .
33Speech command switch
See the separate
. . . . . . . . .
Navigation System Owner's Manualº.
34Steering switches 280
. . . . . . . . . . . . . . . . . . . . . . . . . . .
35Instrument panel light control dial 86
. . . . . . . . . . . . . .
36Hood lock release lever 112
. . . . . . . . . . . . . . . . . . . . . .
37Fuel filler door opener 113
. . . . . . . . . . . . . . . . . . . . . . . .
38RSCA OFFº (roll sensing of curtain
shield airbags off) switch 193 . . . . . . . . . . . . . . . . . . . .
39Outside rear view mirror defogger switch 47 . . . . . . .
40Power outlet (115 VAC) main switch 95
. . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xiv
Page
1Automatic transmission second start indicator light 401 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged Parkº warning light 68
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 73
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 393 . . . . . .
6Driver's seat belt reminder light 65
. . . . . . . . . . . . . . . .
7Turn signal indicator light 36
. . . . . . . . . . . . . . . . . . . . .
8Brake system warning light 64
. . . . . . . . . . . . . . . . . . . .
9Headlight high beam indicator light 36
. . . . . . . . . . . .
10Anti-lock brake system warning light 67
. . . . . . . . . . .
11Open door warning light 68
. . . . . . . . . . . . . . . . . . . . . . .
12Tachometer 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13Headlight indicator light 33
. . . . . . . . . . . . . . . . . . . . . . .
14Cruise control indicator light 409
. . . . . . . . . . . . . . . .
15Engine oil replacement reminder light 72
. . . . . . . . . .
16Slip indicator light 421, 423, 426, 428
. . . . . . . . . . . . .
17Low engine oil pressure warning light 71
. . . . . . . . . .
18Discharge warning light 70
. . . . . . . . . . . . . . . . . . . . . . . Page
19Engine coolant temperature gauge
58
. . . . . . . . . . . . .
20Malfunction indicator lamp 66
. . . . . . . . . . . . . . . . . . . .
21Vehicle stability control system off
indicator light 423 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Roll sensing of curtain shield airbags off
indicator light 193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Kinetic dynamic suspension system
warning light 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24Center differential lock indicator light 401
. . . . . . . .
25Vehicle stability control system and active
traction control system warning light 70 . . . . . . . . . . .
26Downhill assist control system
indicator light 425 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27Rear height control indicator lights 418
. . . . . . . . . . .
28Security indicator light 14, 29
. . . . . . . . . . . . . . . . . . . .
29SRS warning light 66
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30Trip meter reset knob 61
. . . . . . . . . . . . . . . . . . . . . . . . .
31Odometer and trip meter 61
. . . . . . . . . . . . . . . . . . . . . .
32Low fuel level warning light 72
. . . . . . . . . . . . . . . . . . . .
33Low tire pressure warning light 72
. . . . . . . . . . . . . . . .
34Fuel gauge 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xvi
Page
1Automatic transmission second start indicator light 401 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged Parkº warning light 68
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 73
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 393 . . . . . .
6Driver's seat belt reminder light 65
. . . . . . . . . . . . . . . .
7Turn signal indicator light 36
. . . . . . . . . . . . . . . . . . . . .
8Brake system warning light 64
. . . . . . . . . . . . . . . . . . . .
9Headlight high beam indicator light 36
. . . . . . . . . . . .
10Anti-lock brake system warning light 67
. . . . . . . . . . .
11Open door warning light 68
. . . . . . . . . . . . . . . . . . . . . . .
12Tachometer 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13Tail light indicator light 33
. . . . . . . . . . . . . . . . . . . . . . . .
14Cruise control indicator light 409
. . . . . . . . . . . . . . . .
15Slip indicator light 421, 423, 426, 428
. . . . . . . . . . . . .
16Low engine oil pressure warning light 71
. . . . . . . . . .
17Discharge warning light 70
. . . . . . . . . . . . . . . . . . . . . . .
18Engine coolant temperature gauge 58
. . . . . . . . . . . . . Page
19Malfunction indicator lamp
66
. . . . . . . . . . . . . . . . . . . .
20Vehicle stability control system off
indicator light 423 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21Roll sensing of curtain shield airbags off
indicator light 193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Kinetic dynamic suspension system
warning light 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Center differential lock indicator light 401
. . . . . . . .
24Vehicle stability control system and active
traction control system warning light 70 . . . . . . . . . . .
25Downhill assist control system
indicator light 425 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26Rear height control indicator lights 418
. . . . . . . . . . .
27Security indicator light 14, 29
. . . . . . . . . . . . . . . . . . . .
28SRS warning light 66
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29Trip meter reset knob 61
. . . . . . . . . . . . . . . . . . . . . . . . .
30Odometer and trip meter 61
. . . . . . . . . . . . . . . . . . . . . .
31Low fuel level warning light 72
. . . . . . . . . . . . . . . . . . . .
32Low tire pressure warning light 72
. . . . . . . . . . . . . . . .
33Fuel gauge 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 ± 1
383
STARTING AND DRIVING
Starting and driving
Three-way catalytic converters384
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . .
Engine exhaust caution 387
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Before starting the engine 389
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . .
Ignition switch with steering lock 389
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . .
Parking brake 391
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to start the engine 392
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission 393
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Four-wheel drive system 401
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . .
Rear view monitor system 405
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . .
Cruise control 409
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension 412
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . .
Electronic modulated suspension 419
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . .
Active traction control system 420
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . .
Vehicle stability control system 422
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Downhill assist control system 425
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Hill-start assist control system 428
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Brake system 430
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system 434
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators 444
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Limited-slip differential 445
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . .

STARTING AND DRIVING
401
(g) If you cannot shift the selector lever
If you cannot shift the selector lever even though the brake
pedal is depressed, use the shift lock override button. For
instructions, see If you cannot shift automatic transmission
selector leverº on page 513.
(h) Driving in second start mode
In the second start mode, the transmission system shifts up
from second gear. Use this mode when starting your vehicle
in sand, mud, ice or snow.
To set the second start mode, push the 2nd STRTº switch. In
the second start mode, the 2nd STRTº indicator light comes
on. To cancel the second start mode, push the 2nd STRTº
switch once again.
FOUR-WHEEL DRIVE SYSTEM
(a) Four-wheel drive control
Use the four-wheel drive control lever and center
differential lock button to select the following transfer and
center differential modes.
The Hº and Lº position of the four-wheel drive control lever
provides either lock or unlock mode of the center differential
depending on the center differential lock button position.
Use the center differential lock system if your wheels get stuck
in a ditch, or when you are driving on a slippery or bumpy
surface. When the center differential is locked, the vehicle
stability control system is automatically turned off and the
center dif ferential lock and VSC OFFº indicator lights come on
because the function that controls engine performance
interferes with the process of freeing your wheels.

STARTING AND DRIVING
402
NOTICE
As soon as the center differential lock switch is turnedon, the VSC OFFº indicator light comes on. After thewheels are out of the ditch or off the slippery or bumpysurface, turn the center differential lock switch off.Make sure the cen ter differential lock indicator light and
vehicle stability control system off indicator light turn off.
Hº (high speed position, center differential unlocked):
Lever at Hº, center differential lock button left out
Use this for normal driving on all types of roads, from dry
hard-surfaced roads to wet, icy or snow-covered roads. This
position gives greater economy, quietest ride, least wear and
better vehicle control.
Hº (high speed position, center differential locked): Lever
at Hº, center differential lock button pushed in
Use this for greater traction when you experience a loss of
power, such as wheel slipping, in the center differential unlock
mode.
Nº (neutral position): Lever at Nº
No power is delivered to the wheels. The vehicle must be
stopped. Lº (low speed position, center differential unlocked):
Lever at Lº, center differential lock button left out
Use this for maximum power and traction. Use this for climbing
or descending steep hills, off-road driving, and hard pulling in
sand or mud.
In this mode, the braking feeling that occurs when the wheels
are negotiating a sharp corner is further reduced than in the Lº
(low position, center differential locked) mode.
Lº (low speed position, center differential locked):
Lever
at Lº, center differential lock button pushed in
Use this for maximum power and traction. Use this for hard
pulling in sit uations the vehicle cannot negotiate even in the Lº
(low speed position, center differential unlocked) mode. Also,
using this mode when driving down steep of f-road inclines will
help contribute to increased vehicle stability.

STARTING AND DRIVING
403
The indicator light tells when the differential lock is engaged.
Note that the differential is not still locked as long as the
indicator light remains off.
When
the operation is not completed, the indicator blinks. If the
indicator light does not go off when you push out the center
differential lock switch, drive straight ahead while accelerating
or decelerating, or drive in reverse.
The center differential lock system operation is not completed
within 5 seconds while the cruise control system is set, cancel
the cruise control system. To cancel the cruise control system,
see Cruise controlº on page 409. If the indicator light does not go off when you push out the
center differential lock button, drive straight ahead while
accelerating or decelerating, or drive in reverse.
See (b) Shifting procedureº for further instructions.
Advice for driving on slippery roads in Lº (low speed
position) mode
If you shift the four-wheel drive control lever to Lº, the
automatic transmission lever to 2º when you drive in steep
off-road areas, the output of the brake can be controlled
effectively by the active traction control system, which assists
the driver to control the driving power of 4 wheels.
Use the Lº position of the automatic transmission lever for
maximum power and traction when your wheels get stuck or
when you drive down a steep incline. In the following cases,
the out put of the brake can be controlled by the active traction
control
system if the engine speed is under 3000 rpm (normally
engine speed is under 3000 rpm when the wheels get unstuck).
 The four-wheel drive control lever in the Lº position and the
automatic transmission lever in the Lº position or the
automatic transmission lever in the Dº or 2º with the
transmission downshifting to the first gear.
 The four-wheel drive control lever in the Lº position and the
automatic transmission lever in the Rº position
(As for the automatic transmission lever positions, see
Automatic transmissionº on page 393.)