2005 Lexus GX470 Differential

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xiii
Page
1Driving position memory switches225
. . . . . . . . . . .
2Power window switches 48
. . . . . . . . . . . . . . . . . . . . . . .
3Power door lock switch 24
. . . . . . . . . . . . . . . . . . . . . . .
4Window lock switch 49
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5Power rear view mirror control switches 232 . . . . . .
6Side vents 256
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Headlight, turn signal and
fog light switches 33, 36, 37 . . . . . . . . . . . . . . . . . . . . . .
8Wiper and washer switches 37
. . . . . . . . . . . . . . . . . . . .
9Center vents 256
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10Emergency flasher switch 51
. . . . . . . . . . . . . . . . . . . . .
11Audio system 264
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12Multi±information display 75
. . . . . . . . . . . . . . . . . . . . . .
13Automatic air conditioning controls 243
. . . . . . . . . .
14Rear window defogger switch 45
. . . . . . . . . . . . . . . . . .
15Front passenger's seat belt reminder light 65 . . . . . .
16ªAIRBAG ONº and ªAIRBAG OFFº
indicator lights 194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17Glove box 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18Ashtray 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
19Cigarette lighter 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20Seat heater switches 53
. . . . . . . . . . . . . . . . . . . . . . . . . . Page
21Four±wheel drive control lever
411
. . . . . . . . . . . . . . . .
22Automatic transmission selector lever 403 . . . . . . . .
23Parking brake lever 400
. . . . . . . . . . . . . . . . . . . . . . . . .
24Center differential lock switch 411
. . . . . . . . . . . . . . . .
25Power outlet (12 VDC) 93
. . . . . . . . . . . . . . . . . . . . . . . . .
26Downhill assist control switch 436
. . . . . . . . . . . . . . .
27Electronic modulated suspension
control switch 429 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28Rear height control air suspension
switches 422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29Ignition switch 398
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30ª2nd STRTº (second start) switch 411
. . . . . . . . . . . . .
31Tire pressure warning system
selector switch 455 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32Cruise control switch 419
. . . . . . . . . . . . . . . . . . . . . . .
33Audio remote control switches 285
. . . . . . . . . . . . . . .
34Instrument panel light control dial 86
. . . . . . . . . . . . . .
35Hood lock release lever 112
. . . . . . . . . . . . . . . . . . . . . .
36Fuel filler door opener 113
. . . . . . . . . . . . . . . . . . . . . . . .
37ªRSCA OFFº (roll sensing of curtain
shield airbags off) switch 199 . . . . . . . . . . . . . . . . . . . .
38Outside rear view mirror defogger switch 47 . . . . . . .
39Power outlet (115 VAC) main switch 95
. . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xv
Page
1Driving position memory switches225
. . . . . . . . . . .
2Power window switches 48
. . . . . . . . . . . . . . . . . . . . . . .
3Power door lock switch 24
. . . . . . . . . . . . . . . . . . . . . . .
4Window lock switch 49
. . . . . . . . . . . . . . . . . . . . . . . . . . .
5Power rear view mirror control switches 232 . . . . . .
6Side vents 256
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Headlight, turn signal and
fog light switches 33, 36, 37 . . . . . . . . . . . . . . . . . . . . . .
8Wiper and washer switches 37
. . . . . . . . . . . . . . . . . . . .
9Center vents 256
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10Emergency flasher switch 51
. . . . . . . . . . . . . . . . . . . . .
11Rear view monitor/navigation system display
including air conditioning controls and audio
system(For the navigation system, see the separate ªNavigation System Owner's Manualº.) 415 . . . . . . .
12Multi±information display 75
. . . . . . . . . . . . . . . . . . . . . .
13Automatic air conditioning controls
See the separate
. . . . . . . . .
ªNavigation System Owner's Manualº.
14Rear window defogger switch 45
. . . . . . . . . . . . . . . . . .
15Front passenger's seat belt reminder light 65 . . . . . .
16ªAIRBAG ONº and ªAIRBAG OFFº
indicator lights 194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17Glove box 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18Audio system 264
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19Ashtray 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
20Cigarette lighter 92
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
21Seat heater switches
53
. . . . . . . . . . . . . . . . . . . . . . . . . .
22Four±wheel drive control lever 411
. . . . . . . . . . . . . . . .
23Automatic transmission selector lever 403 . . . . . . . .
24Parking brake lever 400
. . . . . . . . . . . . . . . . . . . . . . . . .
25Center differential lock switch 411
. . . . . . . . . . . . . . . .
26Power outlet (12 VDC) 93
. . . . . . . . . . . . . . . . . . . . . . . . .
27Downhill assist control switch 436
. . . . . . . . . . . . . . .
28Electronic modulated suspension
control switch 429 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29Rear height control air suspension
switches 422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30Ignition switch 398
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31ª2nd STRTº (second start) switch 411
. . . . . . . . . . . . .
32Tire pressure warning system
selector switch 455 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33Cruise control switch 419
. . . . . . . . . . . . . . . . . . . . . . .
34Speech command switch
See the separate
. . . . . . . . .
ªNavigation System Owner's Manualº.
35Audio remote control switches 285
. . . . . . . . . . . . . . .
36Instrument panel light control dial 86
. . . . . . . . . . . . . .
37Hood lock release lever 112
. . . . . . . . . . . . . . . . . . . . . .
38Fuel filler door opener 113
. . . . . . . . . . . . . . . . . . . . . . . .
39ªRSCA OFFº (roll sensing of curtain
shield airbags off) switch 199 . . . . . . . . . . . . . . . . . . . .
40Outside rear view mirror defogger switch 47 . . . . . . .
41Power outlet (115 VAC) main switch 95
. . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
xvii
Page
1Automatic transmission second start indicator light 411 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged ªParkº warning light 68
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 73
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 403 . . . . . .
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 419
. . . . . . . . . . . . . . . .
15Engine oil replacement reminder light 72
. . . . . . . . . .
16Slip indicator light 431, 433, 437, 439
. . . . . . . . . . . . .
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 434 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Roll sensing of curtain shield airbags off
indicator light 199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Kinetic dynamic suspension system
warning light 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24Center differential lock indicator light 411
. . . . . . . . .
25Vehicle stability control system and active
traction control system warning light 70 . . . . . . . . . . .
26Downhill assist control system
indicator light 436 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27Height control indicator lights 428
. . . . . . . . . . . . . . .
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
xix
Page
1Automatic transmission second start indicator light 411 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Unengaged ªParkº warning light 68
. . . . . . . . . . . . . . .
3Automatic transmission fluid temperature
warning light 69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Low washer fluid warning light 73
. . . . . . . . . . . . . . . . .
5Automatic transmission indicator lights 403 . . . . . .
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 419
. . . . . . . . . . . . . . . .
15Slip indicator light 431, 433, 437, 439
. . . . . . . . . . . . .
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 434 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21Roll sensing of curtain shield airbags off
indicator light 199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Kinetic dynamic suspension system
warning light 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23Center differential lock indicator light 411
. . . . . . . . .
24Vehicle stability control system and active
traction control system warning light 70 . . . . . . . . . . .
25Downhill assist control system
indicator light 436 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26Height control indicator lights 428
. . . . . . . . . . . . . . .
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
392
STARTING AND DRIVING
Starting and driving
Three±way catalytic converters393
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . .
Engine exhaust caution 396
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Before starting the engine 398
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . .
Ignition switch 398
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking brake 400
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to start the engine 401
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Automatic transmission 403
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . .
Four±wheel drive system 411
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . .
Rear view monitor system 415
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . .
Cruise control 419
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear height control air suspension 422
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . .
Electronic modulated suspension 429
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . .
Active traction control system 430
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . .
Vehicle stability control system 433
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Downhill assist control system 436
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Hill±start assist control 439
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . .
Brake system 442
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressure warning system 446
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators 456
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . .
Limited±slip differential 457
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . . . . . . . . . .

STARTING AND DRIVING
411
(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 ªIf you cannot shift automatic transmission
selector leverº on page 524.
(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 ª2nd STRTº switch. In
the second start mode, the ª2nd STRTº indicator light comes
on. To cancel the second start mode, push the ª2nd STRTº
switch once again.
FOUR±WHEEL DRIVE SYSTEM
(a) Four±wheel drive control
Use the four±wheel drive control lever and center
differential lock switch to select the following transfer and
center differential modes.
The ªHº and ªLº position of the four±wheel drive control leve\
r
provides either lock or unlock mode of the center differential
depending on the center differential lock switch 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 ªVSC OFFº indicator lights come on
because the function that controls engine performance
interferes with the process of freeing your wheels.

STARTING AND DRIVING
412
NOTICE
As soon as the center differential lock switch is turnedon, the ªVSC 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.
ªHº (high speed position, center differential unlocked):
Lever at ªHº, center differential lock switch 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.
ªHº (high speed position, center differential locked): Lever
at ªHº, center differential lock switch pushed in
Use this for greater traction when you experience a loss of
power, such as wheel slipping, in the center differential unlock
mode.
ªNº (neutral position): Lever at ªNº
No power is delivered to the wheels. The vehicle must be
stopped. ªLº (low speed position, center differential unlocked):
Lever at ªLº, center differential lock switch 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 ªLº
(low position, center differential locked) mode.
ªLº (low speed position, center differential locked):
Lever
at ªLº, center differential lock switch pushed in
Use this for maximum power and traction. Use this for hard
pulling in sit uations the vehicle cannot negotiate even in the ªLº
(low speed position, center differential unlocked) mode. Also,
using this mode when driving down steep off±road inclines will
help contribute to increased vehicle stability.

STARTING AND DRIVING
413
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 ªCruise controlº on page 419. 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.
See ª(b) Shifting procedureº for further instructions.
(b) Shifting procedure
To shift between unlock and lock modes in ªHº, push the
center differential lock switch.
To shift between unlock and lock modes in ªLº,
push the
center differential lock switch.
To shift between ªHº and ªLº, stop the vehicle, put the
transmission into ªNº and move the four±wheel drive control
lever.
CAUTION
Never move the four±wheel drive control lever if wheels
are slipping. Stop the slipping or spinning before
shifting.