2010 Lexus GX460 ABS

379
2-5. Driving information
2
When driving
GX460_U.S.A. (OM60E69U)●
Always place wheel blocks under both the vehicle and the trailer
wheels when parking. Apply the pa rking brake firmly, and put the
transmission in P. Avoid parking on a slope, but if unavoidable, do so
only after performing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle and
trailer wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.
● When restarting after parking on a slope:
With the transmission in the P posit ion, start the engine. Be sure
to keep the brake pedal pressed.
Shift into 3, 2, L, or R position (if reversing).
Release the parking brake and br ake pedal, and slowly pull or
back away from the wheel blocks. Stop and apply the brakes.
Have someone retrieve the blocks.
STEP1STEP1
STEP2STEP2
STEP1STEP3STEP3
STEP1STEP4STEP4
STEP1STEP5STEP5STEP5
STEP1STEP1
STEP2STEP2
STEP1STEP3STEP3
STEP1STEP4STEP4

619
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.
CAUTION
■When filling the reservoir
Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets on your eyes, flush the affected area with clean water immediately.
If you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high. 
If the reservoir needs frequent refilli ng, it may indicate a serious problem.

651
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)
37RAD NO.115 AAudio system, navigation system, rear
seat entertainment system
38AM27. 5 AStarter system
39RAD NO.210 ANavigation system
40MAYDAY7. 5 AMAYDAY
41AMP30 AAudio system
42ABS NO.150 AABS, VSC
43ABS NO.230 AABS, VSC
44AIR PMP50 AAir pump
45SECURITY10 ASecurity horn, self power siren, double
lock ECU
46SMART7. 5 ASmart access system with push button
start
47STRG LOCK20 ASteering lock system
48TOW I N G B R K30 ATo w i n g
49WIP RR15 ARear window wiper
50DOME10 A
Interior lights, personal lights, vanity
lights, door courtesy lights, footwell
lights, outer foot lights, overhead
module
FuseAmpereCircuit

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

688
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
Warning lightWarning light/Details
SRS warning lightMalfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)

(Canada)
ABS warning lightMalfunction in:
•The ABS; or
• The brake assist system.
Slip indicator light
Malfunction in:
• The VSC;
• The active traction control system;
• The downhill assist control system
*;
• The hill-start assist control system
*; or
• Crawl Control system*.
The indicator will blink when the system listed above is
operational. ( P. 3 3 2 )
(Flashing)
“PCS” warning light*
Indicates a malfunction in the pre-collision system. 
( P. 3 3 8 )
(Flashing)
“AFS OFF” indicator light*
Indicates a malfunction in the AFS (Adaptive Front-lighting
System). ( P. 223)

5
When trouble arises
695
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the power steering system warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

808
GX460_U.S.A. (OM60E69U)
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
4WDFour Wheel Drive
ABSAnti-Lock Brake System
AFSAdaptive Front-lighting System
AI-SHIFTArtificial Intelligence Shift control
ALRAutomatic Locking Retractor
AV SAdaptive Variable Suspension System
CRSChild Restraint System
DACDownhill Assist control system
DISPDisplay
ECUElectronic Control Unit
EDREvent data recorder
EFIElectric Fuel Injection
ELREmergency Locking Retractor
GAWRGross Axle Weight Ratings
GCWRGross Combination Weight Rating
GPSGlobal Positioning System
GVWRGross Vehicle Weight Rating
HIHigh

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