2008 Lexus IS250 fuses

TABLE OF CONTENTSIndex
08_IS350/250_U_(L/O_0708)
4
3-4. Using the storage features .... 236List of storage features............... 236
• Glove box..................................... 236
• Console boxes ........................... 237
• Overhead console................... 238
• Cup holders................................. 239
• Bottle holders/door pockets ................................ 241
3-5. Other interior features........... 242 Sun visors......................................... 242
Vanity mirror .................................. 243
Clock ................................................. 244
Satellite switches .......................... 245
Ashtrays .......................................... 248
Cigarette lighter ........................... 249
Power outlet .................................. 250
Seat heaters ..................................... 251
Seat heaters and ventilators ..................................... 253
Armrest ............................................ 255
Rear sunshade ............................... 256
Trunk storage extension........... 258
Coat hooks ..................................... 259
Floor mat......................................... 260
Trunk features................................. 261
Garage door opener.................. 264
Compass........................................... 269 4-1. Maintenance and care............ 274
Cleaning and protecting the vehicle exterior .......................... 274
Cleaning and protecting the vehicle interior............................ 277
4-2. Maintenance............................. 280 Maintenance requirements.............................. 280
General maintenance ................ 282
Emission inspection and maintenance (I/M)
programs ..................................... 285
4-3. Do-it-yourself maintenance............................ 286
Do-it-yourself service precautions .................................. 286
Hood................................................. 289
Positioning a floor jack.............. 290
Engine compartment.................. 292
Tires .................................................. 306
Tire inflation pressure.................. 316
Wheels............................................. 320
Air conditioning filter.................. 322
Electronic key battery ................ 325
Checking and replacing fuses ................................................ 327
Headlight aim.................................. 341
Light bulbs ....................................... 342
4Maintenance and care

Maintenance and care4
273
08_IS350/250_U_(L/O_0708)
4-1. Maintenance and care ............................... 274
Cleaning and protecting the vehicle exterior.............. 274
Cleaning and protecting the vehicle interior .............. 277
4-2. Maintenance .................. 280 Maintenance requirements ....................... 280
General maintenance ......... 282
Emission inspection and maintenance (I/M)
programs............................... 285
4-3. Do-it-yourself maintenance ................ 286
Do-it-yourself service precautions ........................... 286
Hood ......................................... 289
Positioning a floor jack ......... 290
Engine compartment ............ 292
Tires ............................................ 306
Tire inflation pressure ............ 316 Wheels ...................................... 320
Air conditioning filter ........... 322
Electronic key battery.......... 325
Checking and replacing
fuses ........................................ 327
Headlight aim .......................... 341
Light bulbs................................ 342

287
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions.
■When working on the engine compartment:
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsParts and tools
Engine oil level (→P. 2 9 5 )
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (→P. 3 2 7 )• Fuse with same amperage rating as
original
Tire inflation pressure (→P. 316)• Tire pressure gauge
• Compressed air source
Headlight aim (→P. 3 4 1 )• Phillips-head screwdriver
Radiator and condenser (→P. 3 0 1 )
Wa s h e r f l u i d (→P. 3 0 5 )
• Water washer fluid containing anti-freeze (for winter use)
•Funnel

327
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Turn the “ENGINE START STOP” switch OFF.
Remove the engine compartment cover. (→P. 2 9 4 )
Open the fuse box cover.
Engine compartment (type A)
Push the tabs in and lift the lid
off.
Engine compartment (type B) Push the tabs in and lift the lid
off.STEP1
STEP2
STEP3

339
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
FuseAmpereCircuit
13FR DOOR RH20 APo w e r w i n d o w s , o u t s i d e r e a r v i e w
mirrors
14AM215 ASmart access system with push-button
start
15RH-IG7. 5 A
Seat belts, intuitive parking assist,
automatic transmission, seat heater
and ventilator
16FR S/HTR RH15 ASeat heaters and ventilators
17ECU-IG RH10 A
Power seats, smart access system with
push-button start, AWD system, out-
side rear view mirrors, VDIM, VSC,
air conditioning system, pre-collision
seat belt, electric tilt and telescopic
steering, power windows, navigation
system
■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. 3 4 2 )
●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.

340
4-3. Do-it-yourself maintenance
08_IS350/250_U_(L/O_0708)
CAUTION
■To prevent system breakdowns and vehicle fire
●Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
●Do not modify fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer.

451
Alphabetical index
08_IS350/250_U_(L/O_0708)
Engine coolantCapacity.....................................................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 ............................ 358
First-aid kit storage belt....................... 261
Floor mat.................................................. 260
Fluid
Brake .........................................................301
Washer ...................................................305
Fog lights Switch ........................................................ 146
Wattage ................................................. 420
Foot well lighting .................................... 231
Front fog lights Switch ........................................................ 146
Wattage ................................................. 420
Front passenger occupant
classification system ........................... 90
Front passenger's seat belt
reminder light ......................................362 Front seats
Adjustment ............................................... 44
Driving position memory .................. 46
Seat position memory ........................ 49
Front turn signal lights Switch........................................................ 128
Wattage..................................................420
Fuel
Capacity ................................................ 409
Fuel gauge.............................................. 130
Fuel pump shut off system............. 357
Gas station information ................. 460
Information ..............................................421
Refueling....................................................69
Fuel door ..................................................... 69
Fuel filler door ........................................... 69
Fuel pump shut off system ................. 357
Fuses .......................................................... 327
Garage door opener .......................... 264
Gas station information......................460
Gauges ...................................................... 130
Glove box ................................................ 236
Glove box light ...................................... 237
Head restraints Adjusting ....................................................51
Headlight aim .......................................... 341
Headlight cleaner ....................................151
F
G
H

453
Alphabetical index
08_IS350/250_U_(L/O_0708)
MaintenanceDo-it-yourself maintenance ......... 286
General maintenance ..................... 282
Maintenance data .............................406
Maintenance requirements ..........280
Manual transmission............................. 126
Meter Instrument panel light control .........131
Meters .......................................................130
Micro dust and pollen filter ................ 196
Mirrors Inside rear view mirror ...................... 60
Side mirror heater .............................200
Side mirrors............................................... 61
Vanity mirrors ..................................... 243
Moon roof ...................................................66
MP3 disc ................................................... 217
Multi-information display.................... 139
Odometer .................................................130
Oil Engine oil ............................................... 295
Opener Fuel filler door ........................................ 69
Hood ....................................................... 289
Trunk ............................................................. 41
Outer foot lights Outer foot lights................................... 231
Wattage ................................................. 420
Outside rear view mirrors
Adjusting and folding ........................... 61
Mirror position memory ....................46
Outside temperature display............140
Overhead console .............................. 238 Overhead courtesy lights
Overhead 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 .......................................... 444M
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