battery Lexus IS250 2008 Using the air conditioning system and defogger / LEXUS 2008 IS250 (OM53699U) Workshop Manual

5
When trouble arises
399
5-2. Steps to take in an emergency
CAUTION
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Observe the following precautions when han-
dling the battery.
●When working with the battery, always wear safety glasses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the vehi-
cle body.
●Do not lean over the battery
●In the event that battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the battery support, terminals, and other
battery-related parts.
●Do not allow children near the battery.
NOTICE
■To prevent damaging the vehicle
Do not pull- or push-start the vehicle, because the three-way catalytic converter
may overheat and become a fire hazard.
■When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan or any
of the belts when connecting or disconnecting them.

412
6-1. Specifications
Electrical system
Differential
*: “Toyota Genuine Differential gear oil LT” is filled in your Lexus vehicle at fac-tory fill. Use Lexus approved “Toyota Genuine Differential gear oil LT” or an
equivalent of matching quality to satisf y the above specification. Please contact
your Lexus dealer for further details.
Battery
Open voltage* at
68 F (20 C):12.6 12.8 V Fully charged
12.2 
12.4 V Half charged
11.8 
12.0 V Discharged
(*: Voltage checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.
Oil capacity
Front0.74 qt. (0.70 L, 0.61 lmp.qt.)
Rear
IS350:
1.42 qt. (1.35 L, 1.19 lmp.qt.)
IS250 (2WD models): 1.20 qt. (1.15 L, 1.01 lmp.qt.)
IS250 (AWD models): 1.10 qt. (1.05 L, 0.92 lmp.qt.)
Oil type and
viscosity*
IS250 (AWD)
Hypoid gear oil API GL-5 Above 0 F (-18 C): SAE90
Below 0 F (-18 C): SAE80W
or SAE80W-90
Others
“Toyota Genuine Differential
Gear Oil LT 75W-85 GL-5” or
equivalent

430
6-1. Specifications
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
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
Production options
weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer.
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer's designation for a rim by
style or code
Tire related termMeaning

441
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Pow e r w i n d owAfter 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.

451
Alphabetical index
Back-up lightsWattage ................................................. 420
Battery Checking ............................................... 302
If the vehicle has discharged battery.................................................. 397
Preparing and checking before winter ......................................183
Bottle holders .......................................... 241
Brake Fluid ............................................................301
Parking brake ........................................ 129
Brake assist ............................................... 170
Care Exterior ....................................................274
Interior...................................................... 277
Seat belts ............................................... 278
Cargo capacity ....................................... 179
Cargo hooks ............................................ 261
CD changer ...............................................211
CD player....................................................211
Chains .........................................................183
Child restraint system Booster seats, definition.................... 95
Booster seats, installation ................. 99
Convertible seats, definition ........... 95
Convertible seats, installation ........ 99 Front passenger occupant
classification system .........................90
Infant seats, definition ..........................95
Infant seats, installation .......................99
Installing CRS with lower anchorages......................................... 102
Installing CRS with seat belts ..........99
Installing CRS with top straps....... 103
Child safety Airbag precautions ............................. 85
Battery precautions ............. 304, 399
Child restraint system .........................95
Child-protectors ...................................38
How your child should wear the seat belt ..........................................55
Installing child restraints.....................98
Moon roof precautions......................68
Power window lock switch .............. 64
Power window precautions ............65
Removed electronic key battery precautions........................................326
Seat belt comfort guide ..................... 53
Seat belt extender precautions...... 57
Seat belt precautions ..........................56
Seat heater precautions...... 252, 254
Trunk precautions................................. 43
Child-protectors ......................................38
Cigarette lighter.................................... 249B
C

453
Alphabetical index
Electric power steering ....................... 170
Electronic keyIf the electronic key does not operate properly ............................ 394
Emergency, in case of If the engine will not start ................. 391
If the shift lever cannot be shifted from P ................................... 392
If the vehicle has discharged battery.................................................. 397
If the warning buzzer sounds...... 360
If the warning light turns on .......... 360
If the warning message is displayed ............................................ 369
If you have a flat tire ........................ 382
If you lose your keys ........................ 393
If you think something is wrong................................................... 356
If the electronic key does not operate properly ............................ 394
If your vehicle becomes stuck .... 402
If your vehicle needs to be towed ...................................................350
If your vehicle overheats................400 Engine
Compartment...................................... 292
Engine switch .......................................... 117
Hood ....................................................... 289
How to start the engine ..................... 117
Identification number .......................407
If the engine will not start................. 391
Ignition switch ......................................... 117
Overheating ........................................ 400
Engine compartment cover ............. 294
Engine coolant Capacity .................................................... 411
Checking ...............................................299
Preparing and checking before winter ..................................... 183
Engine coolant temperature gauge....................................................... 130
Engine immobilizer system.................. 72
Engine oil Capacity .................................................. 410
Checking ...............................................295
Preparing and checking before winter ..................................... 183
Engine oil maintenance data............298
EPS .............................................................. 170
Event data recorder ........................... 358E

457
Alphabetical index
Overhead courtesy lightsOverhead courtesy lights ............... 231
Wattage ................................................. 420
Overheating, Engine .......................... 400
Parking assist sensors .......................... 164
Parking brake .......................................... 129
Parking lights Replacing light bulbs ....................... 342
Switch ........................................................ 143
Wattage ................................................. 420
PCS.............................................................. 176
Personal lights Switch ...................................................... 234
Power outlet ........................................... 250
Power windows.........................................64
Pre-collision system .............................. 176
Radar cruise control ............................. 155
Radiator......................................................301
Radio ......................................................... 204
RDS ............................................................ 205
Rear sunshade ....................................... 256
Rear turn signal lights Replacing light bulbs ....................... 342
Wattage ................................................. 420
Rear view mirror Compass ............................................... 269
Rear window defogger ...................... 200
Replacing Electronic key battery ..................... 325
Fuses .........................................................327
Light bulbs ............................................ 342
Reporting safety defects for U.S. owners ..........................................444 Scuff lighting ............................................ 231
Seat belts
Adjusting the seat belt ........................ 53
Automatic locking retractor ............ 54
Child restraint system installation..............................................98
Cleaning and maintaining the seat belts .....................................278
Emergency locking retractor.......... 54
How to wear your seat belt ............. 52
How your child should wear the seat belt ..........................................55
Pregnant women, proper seat belt use ......................... 54
Reminder light .....................................362
Seat belt extenders ..............................55
Seat belt pretensioners ...................... 53
Seat heaters .................................. 251, 253
Seat position memory ............................ 49
Seat ventilators ...................................... 253
Seating capacity ..................................... 182
Seats Adjustment ............................................... 44
Adjustment precautions .................... 45
Child seats/child restraint system installation..............................98
Cleaning ................................................. 277
Driver’s seat position memory ....... 46
Front passenger seat position memory .................................................. 49
Head restraint ...........................................51
Properly sitting in the seat .................77
Seat heaters ............................... 251, 253
Ventilated seats ..................................253
Service reminder indicators ............. 136
P
R
S

461
Alphabetical index
Wheels ..................................................... 320
Window glasses .......................................64
Window lock switch................................64
WindowsPower windows .....................................64
Rear window defogger ..................200
Washer ..................................................... 147
Windshield wipers ................................. 147
Wireless remote control key Replacing the battery ...................... 325
WMA disc................................................. 217

462
What to do if...
What to do if...
A tire puncturesP. 3 8 2If you have a flat tire
The engine does not start
P. 3 9 1If the engine will not start
P. 7 2Engine immobilizer system
P. 3 9 4If the vehicle battery is discharged
The shift lever cannot be
moved outP. 3 9 2If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 4 0 0If your vehicle overheats
The key is lostP. 3 9 3If you lose your keys
The battery runs outP. 3 9 7If the vehicle battery is discharged
The doors cannot be lockedP. 3 7Doors
The horn begins to soundP. 74Alarm
The vehicle is stuck in mud or
sandP. 4 0 2If the vehicle becomes stuck