power steering Lexus IS F 2010 Audio/video System / LEXUS 2010 IS F (OM53A21U) User Guide

417
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15 AOutside rear view mirror defoggers
4TV NO. 110 ADisplay
5FUEL OPEN10 AFuel filler door opener
6TV NO. 27. 5 A
7PSB30 APre-collision seat belt
8S/ROOF25 AMoon roof
9TA I L10 ATail lights, license plate lights, rear side
marker lights
10PA N E L7. 5 A
Switch illumination, air conditioning
system, display, safety connect, ciga-
rette lighter illumination, shift lever
light, instrument panel lights
11RR FOG7. 5 A
12ECU-IG LH10 A
Cruise control, air conditioning sys-
tem, electric power steering, shift lock
system, moon roof, tire inflation pres-
sure warning system

420
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
12RR DOOR RH20 APo w e r w i n d o w s
13FR DOOR RH20 APower windows, outside rear view
mirrors
14AM27. 5 ASmart access system with push-button
start
15RH-IG7. 5 ASeat belts, intuitive parking assist,
automatic transmission, seat heaters
16FR S/HTR RH15 ASeat heaters
17ECU-IG RH10 A
Power seats, smart access system with
push-button start, outside rear view
mirrors, VDIM, air conditioning sys-
tem, pre-collision seat belt, electric tilt
and telescopic steering, power win-
dows, navigation system, headlights,
front fog lights, parking lights, license
plate lights, windshield washer
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (P. 4 2 4 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

432
5-1. Essential information
■Emergency towing procedure
Release the parking brake.
Shift the shift lever to N.
Put the “ENGINE START STOP” switch in ACCESSORY mode (engine
off) or IGNITION ON mode (engine running).
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelet and the cables or chains. Always use caution for the
surroundings and other vehicles while towing.
●If the engine is not running, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the rear with four wheels on the ground. This may cause
serious damage to the transmission.
STEP1
STEP2
STEP3

5
When trouble arises
443
5-2. Steps to take in an emergency
Warning lightWarning light/Details
(U.S.A.)

(Canada)
ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system.
Electric power steering warning light
Indicates a malfunction in the EPS (Electric Power Steering)
system.
Pre-collision system warning light (if equipped)
Indicates a malfunction in the pre-collision system.
■Electric power steering warning light
When the battery is low or when the voltage drops temporarily, the electric power
steering warning light may come on.
CAUTION
■When the electric power steering warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, firmly hold and
operate it using more force than usual.

5
When trouble arises
487
5-2. Steps to take in an emergency
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

508
6-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
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 transmission, 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)

526
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
ABSAnti-lock Brake System
AFSAdaptive Front-lighting System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
CRSChild Restraint System
DISPDisplay
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
GAWRGross Axle Weight Rating
I/MEmission inspection and maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
LSDLimited Slip Differential
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
PCSPre-Collision System
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Warning System
TRACTraction Control
VDIMVehicle Dynamics Integrated Management

530
Alphabetical index
Child-protectors ......................................40
Cigarette lighter....................................323
Cleaning
Exterior ................................................... 354
Interior ..................................................... 357
Seat belts................................................358
Clock .......................................................... 318
Coat hooks ............................................. 330
Compass ................................................... 341
Condenser ............................................. 380
Console box ..............................................311
Cooling system
Engine overheating ..........................483
Cornering assist sensors ...................... 171
Cruise control
Cruise control ...................................... 158
Dynamic radar cruise control ........ 161
Cup holders ............................................. 313
Curtain shield airbags............................85
Customizable features ........................ 515
Daytime running light system .............151
Defogger
Rear window ........................................206
Side mirrors ..........................................206
Dimension ................................................490
Dinghy towing ......................................... 195
Display
Dynamic radar cruise control ........ 161
Satellite switch mode .........................319
Trip information .................................... 147
Warning message...............................451Do-it-yourself maintenance ............. 366
Door courtesy lights
Door courtesy lights ........................ 306
Wattage ................................................. 499
Door pockets .......................................... 315
Doors
Door lock ................................ 26, 37, 39
Door windows ........................................69
Side mirrors.............................................. 67
Driver's seat belt reminder light ..... 444
Driving
Correct posture.................................... 83
Procedures............................................... 116
Driving position memory...................... 48
Electric power steering........................ 177
Electronic key
If the electronic key does not
operate properly............................. 477
Emergency flashers
Switch ...................................................... 430
D
E

535
Alphabetical index
Head restraints ...................................... 54
Properly sitting in the seat................ 83
Seat heaters.......................................... 325
Service reminder indicators ............. 143
Shift lever
If the shift lever cannot be
shifted from P ................................... 475
Transmission .......................................... 128
Shift lever light ....................................... 306
Shift lock system ....................................475
Shopping bag hooks ........................... 332
Side airbags ............................................... 85
Side marker lights
Switch ....................................................... 150
Side mirrors
Adjusting and folding ..........................67
Mirror position memory ................... 48
Smart access system with
push-button start
Entry function ..........................................26
Starting the engine.............................. 124
“SOS” button ......................................... 345
Spare tire
Inflation pressure ............................... 397
Storage location................................. 465
Spark plug ............................................... 495
Specifications......................................... 490
Speedometer ........................................... 139
Steering wheel
Adjustment ...............................................64
Audio switches ................................... 254
Steering wheel position
memory ................................................. 48
Storage feature .......................................310
Stuck
If your vehicle becomes stuck .... 486Sun visors .................................................. 316
Sunshade ..................................................... 72
Switch
Emergency flasher switch ............ 430
Engine switch .........................................124
Fog light switch .................................... 153
F-sport mode total control
switch.......................................... 130, 180
Hazard light switch .......................... 430
Ignition switch ........................................124
Light switches ....................................... 150
Power door lock switch .................... 39
Power window switch ........................69
Satellite switches.................................. 319
Transmission shift
switches ...................................... 130, 132
Window lock switch............................69
Wiper and washer switch............... 154
Tachometer.............................................. 139
Tail lights
Switch........................................................ 150
Talk switch .............................................. 280
Telephone switch ................................. 280
Theft deterrent system
Alarm.......................................................... 80
Engine immobilizer system.............. 78
Theft prevention labels .......................... 82
Tire inflation pressure ......................... 397
Tire information
Glossary ................................................ 508
Size ........................................................... 505
Tire identification number............. 505
Uniform tire quality grading ........ 506
T

536
Alphabetical index
Tires
Chains ....................................................... 192
Checking ...............................................386
If you have a flat tire ..........................465
Inflation pressure................................ 397
Inflation pressure sensor................386
Information............................................503
Replacing ...............................................465
Rotating tires ........................................386
Size ...........................................................498
Snow tires ................................................ 192
Tools ...........................................................465
Total load capacity ..................................191
Towing
Dinghy towing ...................................... 195
Emergency towing ............................. 431
Trailer towing.........................................194
TRAC........................................................... 177
Traction control ....................................... 177
Transmission shift switches ...... 130, 132
Trip meter ................................................. 139
Trunk
Extending trunk space .................... 328
Opener ...................................................... 43
Trunk light
Trunk light................................................. 44
Wattage.................................................. 499
Turn signal lights
Replacing light bulbs........................ 424
Switch ........................................................136
Wattage.................................................. 499Vanity lights
Vanity lights............................................ 317
Wattage ................................................. 499
Vanity mirrors .......................................... 317
VDIM........................................................... 177
Vehicle dynamics integrated
management ......................................... 177
Vehicle identification number...........491
Vehicle stability control ....................... 177
Voice command switch .....................280
VSC ............................................................. 177
Warning buzzers
Brake system ......................................... 441
Open door ...........................................444
Seat belt reminder .............................444
Warning lights
Anti-lock brake system ...................442
Brake assist system ...........................442
Brake system ......................................... 441
Charging system ................................442
Electric power steering
warning light......................................442
Low fuel level........................................444
Malfunction indicator lamp ...........442
Master warning light.........................444
Open door ............................................444
Pre-collision system..........................442
Pretensioners .......................................442
Seat belt reminder light ...................444
SRS airbags ...........................................442
Tire pressure warning
light.........................................................444V
W