air conditioning Lexus GX460 2010 Using The Bluetooth Audio System /

654
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
74WD20 A4WD system, rear differential lock
8P/ S E AT F L30 AFront power seat (left)
9D/L NO.225 ADouble lock system
10PSB30 APSB ECU
11TI & TE15 ATilt and telescopic steering
12FOG FR15 AFront fog lights
13OBD7. 5 ADLC 3
14A/C7. 5 AAir conditioning system
15AM17. 5 AStarting system
16DOOR RL25 ARear power window (left)
17ECU-IG NO.110 A
Shift lock ECU, VSC ECU, ABS
ECU, steering sensor, yaw rate sensor,
sequential switch, auto wiper ECU,
back up relay, tilt & telescopic steer-
ing, PSB ECU, DSS#1 ECU, front
radar sensor, AFS ECU, TIRE PRESS
ECU, DRIVER MON ECU
18IG17. 5 A
Emergency flashers, ALT, towing,
VSC, SROP LP relay, MGC relay,
condenser fan relay
FuseAmpereCircuit

655
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)
19ECU-IG NO.210 A
Rear window defogger, outside rear
view mirror memory, seat heater/ ven-
tilator switch, inverter relay, air condi-
tioning system, EC mirror, Body ECU,
exhaust gas sensor, parking assist sen-
sor, navigation system, DSS#2 ECU,
meter switch, accessory meter, folding
seat ECU, O/H IG, head light cleaner,
rear air conditioning system, deicer,
4.2-in. display, D-module, rain sensor,
air suspension, RR VLV ECU, steering
heater, LKA
20S/HTR FR20 ASeat heater and ventilator
21P/ S E AT F R30 AFront power seat (right)
22DOOR P30 A
Front power window (passenger’s
side), outside rear view mirror mem-
ory
23DOOR10 APo w e r w i n d o w
24DOOR D25 AFront power window (driver’s side)
25DOOR RR25 ARear power window (right)
26S/ROOF25 AMoon roof
27WIP30 AWindshield wipers and washer
28WA S H E R20 AWindshield wipers and washer, rear
window wipers and washer
29COOLING10 ACool box
FuseAmpereCircuit

5
When trouble arises
681
5-1. Essential information
GX460_U.S.A. (OM60E69U)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■ Visible symptoms
●Fluid leaks under the vehicle 
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temper ature gauge needle continually points
higher than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

744
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
If your vehicle overheats
If the engine overheats:
Stop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: 
Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment covers. ( P. 6 0 9 )
Check to see if the cooling fan is operating.
If the fan is operating: 
Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: 
Stop the engine and call your local Lexus dealer.STEP1
STEP2
STEP3
STEP4

772
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation 
pressureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning and
additional weight optional engine

795
6-2. Customization
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Front auto-
matic air
condition-
ing sys-
tem
*1,2
Efficient Venti-
lation Mode
(Enable/disable
switching of the
air intake con-
trol mode to
automatic when
the “AUTO”
switch ON)
OnOffO––O
Auto A/C
Mode
(Enable/disable
automatic oper-
ation of the air
conditioning
compressor
when the
“AUTO” switch
ON)
OnOffO––O
ItemFunctionDefault settingCustomized setting

Index
807
GX460_U.S.A. (OM60E69U)
Abbreviation list .................... 808
Alphabetical index .................. 810
What to do if... ........................ 820
For details of equipment related to the navigation system,
such as the air conditioning and audio systems, refer to the
“Navigation System Owner’s Manual”.

810
GX460_U.S.A. (OM60E69U)
Alphabetical index
Alphabetical index
A/CFront automatic air conditioning 
system ..................................................384
Rear automatic air conditioning 
system ................................................. 400
ABS............................................................ 330
Active traction control......................... 331
Adaptive front lighting system ........ 223
Adaptive variable suspension 
system...................................................... 316
AFS ............................................................. 223
Air conditioning filter ..........................640
Air conditioning system Air conditioning filter .......................640
Front automatic air conditioning 
system ..................................................384
Rear automatic air conditioning 
system ................................................. 400
Airbags Airbag deployment 
conditions............................................. 126
Airbag precautions for your 
child.........................................................133
Airbag warning light ....................... 688
Front passenger occupant 
classification system....................... 140
General airbag precautions .......... 132
Locations of airbags.............................121
Modification and disposal of 
airbags ................................................... 137
Proper driving po sture ...................... 119
Side airbag precautions ................... 134
Side and curtain shield airbags 
deployment conditions ................. 126
Side and curtain shield airbag 
precautions .........................................135
SRS airbags ..............................................121 Alarm ............................................................ 116
Antenna ......................................................413
Anti-lock brake system ......................330
Armrest .................................................... 554
Audio input................................................451
Audio system
Antenna.................................................... 413
Audio input............................................. 451
AUX adapter ........................................ 451
CD player/changer ........................... 416
MP3/WMA disc................................424
Optimal use ......................................... 449
Portable music player ....................... 451
Radio ....................................................... 408
Steering wheel audio switch........ 452
USB memory ...................................... 440
Automatic air conditioning system Air conditioning filter ....................... 640
Front automatic air conditioning 
system.................................................. 384
Rear automatic air conditioning 
system.................................................. 400
Automatic light control system....... 220
Automatic transmission Automatic transmission ...................186
If the shift lever cannot be shifted 
from P ...................................................736
S mode .....................................................189
AUX adapter ...........................................451
Auxiliary box .............................. 525, 559
AVS..............................................................316
Back door Back door .................................................54
Wireless remote control .................. 48A
B