steering wheel Lexus IS F 2008 Scheduled Maintenace Guide / LEXUS 2008 IS F (OM53714U) Service Manual

5
When trouble arises
341
5-1. Essential information
■Emergency towing procedureRelease 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.
●If the engine is not running, the power assi st 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

344
5-1. Essential information
Towing with a wheel lift-type truckFrom the front Use a towing dolly under the rear
wheels.
From the rear Turn the “ENGINE START STOP”
switch to the ACCESSORY mode
so that the steering wheel is
unlocked.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the front with the rear wheels on the ground.
■To prevent damaging the vehicle
●Do not tow the vehicle from the rear with the “ENGINE START STOP” switch
OFF.
The steering lock mechanism is not st rong enough to hold the front wheel
straight.
●When raising the vehicle from the rear, ensure adequate ground clearance for
towing at the opposite end of the raised vehicle. Without adequate clearance, the
vehicle could be damaged while being towed from the rear.

352
5-2. Steps to take in an emergency
Warning lightWarning light/Details
(U.S.A.)

(Canada)
ABS warning lightIndicates a malfunction in:
•The ABS; or
• The brake assist system.
Electric power steering warning lightIndicates 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
357
5-2. Steps to take in an emergency
CAUTION
■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.
●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.

372
5-2. Steps to take in an emergency
Once
(Comes on for 10 seconds.)
(Flashing)
Indicates that the
key battery is low.Replace the bat-
tery. (P. 3 1 6 )

Indicates that the
“ENGINE START
STOP” switch has
been turned
twice to ACCES-
SORY mode
without starting
the engine when
a closed door is
opened.
Press the
“ENGINE START
STOP” switch
while applying the
brakes.

(Flashing)
Indicates that the
steering lock has
not released
within 3 seconds
of pressing the
“ENGINE START
STOP” switch.Press the
“ENGINE START
STOP” switch
again while turn-
ing the steering
wheel with the
brake pedal
depressed.
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

407
6-1. Specifications
6
Vehicle specifications
Steering
Tires and wheels
Free playLess than 1.2 in. (30 mm)
Ti r e s i z e
Front: 225/40R19 93Y
Rear: 255/ 35R19 96Y
Spare: T135/70R18 103M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Front:
36 psi (250 kPa, 2.5 kgf/cm2 or bar)*
Rear:
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)*
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
*: When driving at high speeds above 100 mph
(160 km/h), in countries where such speeds are
permitted by law, add 9.0 psi (60 kPa, 0.6 kgf/
cm
2 or bar) to the front tires and rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size
Front wheels: 19  8J
Rear wheels: 19  9J
Spare wheel: 18  4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

417
6-1. Specifications
6
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the hi ghest), 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 Mo tor 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 excess ive loading, either separately or in
combination, can cause heat build up 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)

425
6-2. Customization
6
Vehicle specifications
Wireless
remote con-
trol
(
P. 3 4 )
Operation signal
(Emergency flashers)OnOff
Operation signal
(Buzzer) OnOff
Door lock buzzerOnOff
Tr u n k u n l o c k i n g f u n c t i o nOnOff
Trunk unlocking operationPush and holdPush twice
One short push
Panic functionOnOff
Door lock
(
P. 3 7 )
Unlocking using a key
Driver's door
unlocked in one
step, all doors
unlocked in two
steps
All doors
unlocked in one step
Speed-detecting auto-
matic door lock functionOffOn
Opening driver's door
unlocks all doorsOffOn
Shifting gears to P
unlocks all doors.OnOff
Shifting gears to position
other than P locks all
doors.
OnOff
Steering
wheel
(
P. 5 7 )
Auto tilt-away functionOnOff
ItemFunctionDefault settingCustomizedsetting

438
Alphabetical index
Alphabetical index
A/C ............................................................. 186
ABS.............................................................. 166
ACCESSORY mode ............................ 114
AFS .............................................................. 140
Adaptive front lighting system ......... 140
Air conditioning filter ........................... 313
Air conditioning systemAir conditioning filter .........................313
Automatic air conditioning system ................................................... 186
Airbags Airbag operating conditions........... 79
Airbag precautions for your child.......................................................... 83
Airbag warning light ..........................351
Curtain shield airbag operating conditions..............................................80
Curtain shield airbag precautions .......................................... 83
Front passenger occupant classification system.........................88
General airbag precautions ........... 83
Locations of airbags............................. 77
Modification and disposal of airbags .................................................... 87
Proper driving po sture ............. 75, 83
Side airbag operating conditions..............................................80
Side airbag precautions .................... 83
SRS airbags .............................................. 77 Alarm .............................................................72
Antenna .................................................... 202
Anti-lock brake system ........................166
Armrest .................................................... 246
Ashtrays.................................................... 239
Audio input.............................................. 220
Audio system
Antenna.................................................. 202
Audio input ........................................... 220
Audio visual input.............................. 220
AUX adapter ...................................... 220
CD player/changer ......................... 205
MP3/WMA disc................................... 211
Optimal use ............................................217
Portable music player ..................... 220
Radio .........................................................198
Steering wheel audio switch...........221
Audio visual input ................................. 220
Automatic air conditioning system ..................................................... 186
Automatic headlight leveling system ....................................................... 141
Automatic light control system.........139
Automatic transmission Automatic transmission .....................118
If the shift lever cannot be shifted from P................................... 384
M mode ....................................................122
AUX adapter ......................................... 220A

445
Alphabetical index
Seat heaters................................. 242, 244
Seat position memory ........................... 48
Seat ventilators.......................................244
Seating capacity ..................................... 179
SeatsAdjustment ...............................................44
Adjustment precautions.....................44
Child seats/child restraint system installation ............................. 96
Cleaning .................................................267
Driver’s seat position memory ...... 45
Front passenger seat position memory ................................................. 48
Head restraint ........................................ 50
Properly sitting in the seat.................75
Seat heaters............................... 242, 244
Ventilated seats ...................................244
Service reminder indicators ............. 132
Shift lever If the shift lever cannot be shifted from P ................................... 384
Transmission ........................................... 118
Shift lever light ........................................223
Shift lock system ................................... 384
Shopping bag hooks ............................. 251
Side airbags ................................................ 77
Side marker lights Switch ........................................................ 139
Side mirrors Adjusting and folding ......................... 60
Mirror position memory ................... 45
Smart access system with push-button startEntry function .......................................... 22
Starting the engine................................ 114 Spare tire
Inflation pressure ................................307
Spare tire ................................................ 374
Spark plug................................................403
Specifications ........................................ 398
Speech command switch*
Speedometer .......................................... 128
Steering wheel Adjustment ............................................... 57
Audio switches...................................... 221
Steering wheel positionmemory .................................................. 45
Storage feature...................................... 227
Stuck If your vehicle becomes stuck .... 395
Sun visors ................................................. 233
Sunshade ..................................................... 65
Switch Engine switch .......................................... 114
Fog light switch .....................................142
F-sport mode total control switch...........................................120, 169
Ignition switch ......................................... 114
Light switches ....................................... 139
Power door lock switch .................... 37
Power window switch ........................ 62
Satellite switches.................................236
Transmission shift switches ...................................... 120, 122
Window lock switch............................ 62
Wiper and washer switch............... 143