Power steering Lexus GS350 2011 Owner's Guide

5
When trouble arises
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5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Malfunction indicator lamp Malfunction in:
• The emission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The automatic transmission control system.
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.
(GS460)
ECB (Electronically controlled brake system) warning light Malfunction in the electronically controlled brake system.
Electric power steering system warning lightMalfunction in the EPS.
“PCS” warning light (if equipped)
Malfunction in the pre-collision system.

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When trouble arises
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5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Electric power steering system warning light
When the voltage is low or drops, the electric power steering system warning light
may come on.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire is replaced with the spare tire. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes.

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When trouble arises
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5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
CAUTION
■When the electric 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 precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Vehicles with standard tires:
• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflationpressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, 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.
●Vehicles with run-flat tires:
• Decelerate to the lowest appropriate speed as soon as possible. Do not driveover 55 mph (90 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Have the tire replaced 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.

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When trouble arises
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5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Wa r n i n g m e s s a g eDetails
(Flashing)
(If equipped)
Malfunction in the radar cruise control system. Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
Malfunction in the charging system.
Malfunction in the power steering system.
Malfunction in the brake system.
Malfunction in the ABS.

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5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
If your vehicle has to be stopped in an emergency
CAUTION
■If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as
possible before turning off the engine.
Only in an emergency, such as if it becomes impossible to stop the vehicle
in the normal way, stop the vehicle using the following procedure:
Steadily step on the brake pedal with both feet and firmly
depress it.
Do not pump the brake pedal repeatedly as this will increase the
effort required to slow the vehicle.
Shift the shift lever to “N”.
If the shift lever is shifted to “N” After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If the shift lever cannot be shifted to “N” Keep depressing the brake pedal with both feet to reduce vehi-
cle speed as much as possible.
Stop the engine by pressing and
holding the “ENGINE START
STOP” switch for 3 consecutive
seconds or more.
Stop the vehicle in a safe place by the road.
STEP1
STEP2
STEP3
STEP4
STEP3
Press and hold for 3 seconds or more
STEP4
STEP5

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6-1. Specifications
6
Vehicle specifications
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire 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 transmis-
sion, power steering, power brakes, power windows,
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
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below

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GS_G_U (OM30C11U)
May 21, 2010 12:06 pm
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/CAir Conditioning
ABSAnti-Lock Brake System
AFSAdaptive Front-lighting System
ALRAutomatic Locking Retractor
CRSChild Restraint System
DISPDisplay
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
Enhanced VSCEnhanced Vehicle Stability Control
EPSElectric Power Steering
GAWRGross Axle Weight Ratings
GPSGlobal Positioning System
I/MEmission inspection and maintenance
INFOInformation
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
MMTMethylcy clopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics

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Alphabetical index
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Daytime running light system ........... 156
DefoggerRear window........................................255
Side mirror ............................................255
Dimension ............................................... 584
Dinghy towing ........................................ 224
Display Multi-information display................. 152
Touch screen ....................................... 228
Trip information ....................................153
Warning message............................. 544
Do-it-yourself maintenance ............. 442
Door courtesy lights ............................382
Door pocket............................................392
Doors Door lock...................................29, 41, 43
Rear door child protector ................ 44
Driver’s seat belt reminder light .....536
Driver’s seat position memory ...........55
Driving
Correct posture .................................... 90
Procedures ............................................. 124
DVD player/changer......................... 280
Electric power steering ....................... 199
Electronic key If the electronic key does not operate properly ...................... 571
Replacing battery .............................. 482 Emergency, in case of
If a warning light turns on .............. 534
If a warning message is displayed ............................................ 544
If the electronic key does not operate properly ..................... 571
If the engine will not start .......................................................568
If the shift lever cannot be shifted from “P” ............................... 569
If the 12 volt battery is discharged ........................................574
If you have a flat tire ............ 557, 567
If you lose your keys ........................ 570
If you think something is wrong .................................................. 530
If your vehicle becomes stuck ......581
If your vehicle has to be stopped in an emergency ............................ 582
If your vehicle needs to be
towed ................................................... 520
If your vehicle overheats................ 578
Engine ACCESSORY mode....................... 134
Compartment ..................................... 448
Engine (ignition) switch.................... 133
Hood ....................................................... 445
How to start the engine ................... 133
If the engine will not start ...............568
Overheating ........................................ 578
Engine compartment cover ............. 450
Engine coolant temperature gauge .......................................................145D
E

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Alphabetical index
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Seat heaters/ventilators...................... 401
Seating capacity ......................................217
SeatsAdjustment............................................... 53
Adjustment precautions.................... 54
Child seats/child restraint
system installation ..............................113
Cleaning................................................. 433
Driver’s seat position memory....... 55
Head restraint......................................... 60
Properly sitting in the seat ................ 90
Seat heaters ......................................... 400
Service reminder indicators ............. 149
Shift lever Automatic transmission.................... 137
If the shift lever cannot be shifted from “P”................................569
Shift lock system ....................................569
Shopping bag hooks........................... 408
Side airbags................................................ 92
Side marker lights Switch ....................................................... 155
Side mirror Adjusting and folding ..........................73
Mirror position memory ................... 55
Smart access system with
push-button startAntenna location..................................... 31
Entry function.......................................... 29
Starting the engine .............................. 133
Spare tire Inflation pressure................................596
Storage location ................................ 558
Spark plug ................................................592
Specifications ........................................ 584
Speedometer........................................... 145 Steering wheel
Adjustment ...............................................70
Audio switches ....................................329
Steering wheel position
memory ................................................. 55
Storage compartment ........................390
Storage feature .....................................385
Stuck
If your vehicle becomes stuck ......581
Sun visors ................................................. 393
Switch “ENGINE START STOP”
switch ..................................................... 133
Fog light switch ....................................158
Ignition switch ....................................... 133
Light switches........................................ 155
Mode select switch ............................ 138
Power door lock switch.....................43
Power window switch ........................ 75
Tire pressure warning
reset switch ....................................... 464
Tire pressure
warning select switch .................. 466
Window lock switch ............................ 75
Wipers and washer switch............. 159
Tachometer ..............................................145
Tail lights Switch ........................................................ 155
Theft deterrent system
Alarm...........................................................87
Immobilizer system ............................. 85
Tire inflation pressure ......................... 596
T

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Alphabetical index
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Tire informationGlossary ................................................609
Size ...........................................................605
Tire identification number .............604
Uniform Tire Quality Grading ... 607
Tires
Chains ....................................................... 219
Checking ............................................... 463
Compact spare tire ..........................558
If you have a flat tire.............. 557, 567
Inflation pressure ............................... 596
Information............................................ 602
Replacing............................................... 557
Rotating tires........................................ 463
Size ........................................................... 596
Snow tires................................................ 221
Tire pressure warning system..... 463
Tools ...........................................................557
Total load capacity................................. 217
Touch screen ......................................... 228
Towing Dinghy towing......................................224
Emergency towing ........................... 522
Trailer towing........................................223
Traction control ...................................... 199
Trip meter.................................................. 145
Trunk Opener...................................................... 48
Trunk light .................................................49
Wattage .................................................598
Turn signal lights Replacing light bulbs ......................... 512
Switch ........................................................ 142
Wattage .................................................598 Vanity lights
Vanity lights ..........................................394
Wattage................................................. 598
Vanity mirrors ........................................394
Variable gear ratio steering ............ 200
Vehicle dynamics
integrated management ................ 200
Vehicle identification number ........ 585
Vehicle load limits ..................................217
Ventilators .............................................. 400
Warning buzzers
Brake system........................................534
Downshifting ......................................... 140
Open door .......................................... 536
Seat belt reminder ............................ 536
Warning lights Anti-lock brake system .................. 535
Brake system........................................534
Charging system................................534
Electric power steering warning light .................................... 535
Electronically controlled brake system ............ 535
Low fuel level ...................................... 536
Malfunction indicator lamp .......... 535
Master warning light.........................537
Open door ........................................... 536
Pre-collision system......................... 535
Seat belt reminder light.................. 536
SRS airbags.......................................... 535
Tire pressure warning light ........... 537V
W