2008 Lexus IS250 warning

380
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0708)
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection
procedure
Once
(Vehicles with an auto- matic transmission)
Indicates that a
door has been
opened or closed
and the “ENGINE
START STOP”
switch has been
switched twice to
ACCESSORY
mode from OFF.
Press the
“ENGINE START
STOP” switch
while applying the
brakes.
Once
(Vehicles with a manual transmission)
Indicates that a
door has been
opened or closed
and the “ENGINE
START STOP”
switch has been
switched twice to
ACCESSORY
mode from OFF.
Press the
“ENGINE START
STOP” switch
while depressing
the clutch pedal.
Once
(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.

5
When trouble arises
387
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0708)
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily only in an emergency.
●Make sure to check the tire pressure of the compact spare tire. (→P. 4 1 5 )
■When using the compact spare tire
As the compact spare tire is not equipped with the tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be warned. Also, if you
replace the compact spare tire after the tire pressure warning light comes on, the
light remains on.
■If you have a flat rear tire on a road covered with snow or ice
Install the compact spare tire on the front of the vehicle. Perform the following steps
and fit tire chains to the rear tires.Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehi-
cle.
Fit tire chains to the rear tires.
■After completing the tire change
The tire pressure warning system must be reset. (
→P. 3 0 8 )
STEP1
STEP2
STEP3

390
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0708)
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
■Be careful when driving over bumps with the compact spare tire installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.
■Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damaging the tire pressure warning valves and transmitters
Do not use liquid sealants on flat tires.

428
6-1. Specifications
08_IS350/250_U_(L/O_0708)■
DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire's ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.

429
6-1. Specifications
6
Vehicle specifications
08_IS350/250_U_(L/O_0708)■
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
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)
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
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

441
6
Vehicle specifications
08_IS350/250_U_(L/O_0708)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Po w e r w i n d o wAfter reconnecting or changing the
batteryP. 6 4
Engine oil maintenance
dataAfter changing engine oilP. 2 9 5
Tire pressure warning
system
• When rotating the tires differing with front and rear tire inflation pressures.
• When changing the tire inflation pressure by changing traveling
speed.
• When changing the tire size.
P. 3 0 7
The following item must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

446
07_LS600h_U
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
ABSAnti-Lock Brake System
AFSAdaptive Front-lighting System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
CALCalibration
CRSChild Restraint System
DISPDisplay
ECTElectronic Controlled Transmission
ECUElectronic Control Unit
EDREvent data recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
ETCSElectronic Throttle Control System
GAWRGross Axle Weight Rating
I/MEmission inspection and maintenance
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
TRACTr a c t i o n C o n t r o l
VDIMVehicle Dynamics Integrated Management

448
08_IS350/250_U_(L/O_0708)
Alphabetical index
Alphabetical index
A/C ............................................................. 192
ABS.............................................................. 170
AFS .............................................................. 144
Adaptive front lighting system ......... 144
Air conditioning filter .......................... 322
Air conditioning systemAir conditioning filter ....................... 322
Automatic air conditioning system .................................................... 192
Airbags
Airbag operating conditions.............81
Airbag precautions for your child.......................................................... 85
Airbag warning light ..........................361
Curtain shield airbag operating conditions.............................................. 82
Curtain shield airbag precautions ..........................................85
Front passenger occupant classification system......................... 90
General airbag precautions ...........85
Locations of airbags............................ 79
Modification and disposal of airbags .................................................... 89
Proper driving posture ............. 77, 85
Side airbag operating conditions.............................................. 82
Side airbag precautions ....................85
SRS airbags ............................................. 79
Alarm ............................................................ 74
Antenna ................................................... 208
Anti-lock brake system ....................... 170
Armrest.....................................................255
Ashtrays ....................................................248
Audio input ..............................................228 Audio system
Antenna.................................................. 208
Audio input........................................... 228
Audio visual input.............................. 228
AUX adapter ...................................... 228
CD player/changer ............................. 211
MP3/WMA disc..................................217
Optimal use ..........................................225
Portable music player ..................... 228
Radio ....................................................... 204
Steering wheel audio switch.........229
Audio visual input ................................. 228
Automatic air conditioning system ......................................................192
Automatic headlight leveling system ......................................................145
Automatic light control system.........143
Automatic transmission Automatic transmission ....................122
If the shift lever cannot be shifted from P....................................392
S mode ..................................................... 124
AUX adapter ......................................... 228
Back-up lights Wattage ................................................. 420
Battery Checking............................................... 302
If the vehicle has discharged battery ..................................................397
Preparing and checking before winter...................................... 183A
B