2010 Lexus HS250h fuses

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4-2. MaintenanceMaintenance 
requirements.............................. 409
General maintenance ................... 411
Emission inspection and 
maintenance (I/M) 
programs ....................................... 415
4-3. Do-it-yourself maintenance Do-it-yourself service 
precautions ................................... 416
Hood................................................... 419
Positioning a floor jack............... 420
Engine compartment.................. 422
12-volt battery................................ 433
Tires ................................................... 437
Tire inflation pressure................. 445
Wheels.............................................. 448
Air conditioning filter................. 450
Electronic key battery ................ 453
Checking and replacing 
fuses ................................................ 455
Headlight aim 
(LED headlights) ....................... 467
Light bulbs ....................................... 469 5-1. Essential information
Emergency flashers .................... 482
If your vehicle needs to be 
towed ............................................ 483
If you think something is 
wrong ............................................ 489
Event data recorder.................... 490
5-2. Steps to take in an emergency If a warning light turns on 
or a warning buzzer 
sounds... ......................................... 492
If a warning message is 
displayed........................................ 501
If you have a flat tire...................... 521
If the hybrid system will not 
start ................................................ 530
If you lose your keys .................... 532
If the electronic key does 
not operate prop erly ............... 533
If the vehicle 12-volt battery 
is discharged ............................... 536
If your vehicle overheats ............ 541
If the vehicle becomes 
stuck................................................ 545
5When trouble arises

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3-4. Using the hands-free phone system (for cellular phones)
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Interior features
■Steering wheel switches
Vo l u m e
The voice guidance volume can -
not be adjusted using this but-
ton.
Off-hook switch 
Turns the hands-free system
on/

starts a call
On-hook switch 
Turns the hands-free system
of

f/ends a call/refuses a call
Talk switch 
Turns the voice command
s
ystem on (press)/turns the
voice command system off
(press and hold)
■ Micr
ophone

Maintenance and care4
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4-1. Maintenance and careCleaning and protecting 
the vehicle exterior............ 402
Cleaning and protecting 
the vehicle interior .............. 406
4-2. Maintenance Maintenance 
requirements ........................ 409
General maintenance ............ 411
Emission inspection and 
maintenance (I/M) 
programs................................. 415 4-3. Do-it-yourself maintenance
Do-it-yourself service 
precautions ............................ 416
Hood ........................................... 419
Positioning a floor jack ......... 420
Engine compartment ........... 422
12-volt battery ........................ 433
Tires............................................ 437
Tire inflation pressure........... 445
Wheels ...................................... 448
Air conditioning filter ........... 450
Electronic key battery.......... 453
Checking and replacing 
fuses ........................................ 455
Headlight aim 
(LED headlights) .................. 467
Light bulbs ................................ 469

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4-3. Do-it-yourself maintenance
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Maintenance and care
ItemsPa r t s a n d t o o l s
Engine oil level (P. 4 2 4 )
• “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 4 5 5 )• Fuse with same amperage rating as
original
Headlight aim ( P. 4 6 7 )• Phillips-head screwdriver
Light bulbs( P. 4 6 9 )
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
•Flathead screwdriver
•Wrench
Radiator and condenser (P. 4 3 0 )
Tire inflation pressure ( P. 4 4 5 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( P. 4 3 2 )
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

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4-3. Do-it-yourself maintenance
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Maintenance and care
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 “POWER” switch off.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid off.
Driver’s side instrument panel Remove the lid.
After a system failure, see “Fuse la y
out and amperage ratings”
( P. 4 5 8 ) for details about which fuse to check.

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4-3. Do-it-yourself maintenance
■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 6 9 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in a circuit
The fuses are designed to blow before the entire wiring harness is damaged.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions. 
Failure 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 the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near
the fuse box. 
Doing so may cause electric shock, re sulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.

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Alphabetical index
Engine oilCapacity ................................................ 550
Checking ............................................... 424
Preparing and checking 
before winter .................................... 244
Engine oil maintenance data............ 426
Engine switch............................................147
Enhanced VSC...................................... 225
EPS ............................................................. 225
EV drive mode switch .......................... 152
Event data recorder ............................490
Floor mat ................................................. 380
Fluid Brake........................................................554
Washer ................................................... 432
Fog lights Replacing light bulbs........................ 469
Switch ........................................................194
Wattage..................................................556
Foot light ...................................................360
Foot well lighting ...................................360
Front fog lights
Replacing light bulbs........................ 469
Switch ........................................................194
Wattage..................................................556
Front passenger occupant 
classification system ............................115
Front passenger's seat belt 
reminder light......................................495 Front seats
Adjustment ...............................................64
Driver’s seat po sition memory ...... 68
Front side marker light Replacing light bulbs ....................... 469
Wattage ................................................. 556
Front turn signal lights Replacing light bulbs ....................... 469
Switch ........................................................ 162
Wattage ................................................. 556
Fuel Capacity ................................................550
Fuel gauge .............................................. 162
Gas station information .................608
Information ........................................... 557
Refueling .................................................... 92
Type ......................................................... 557
Fuel door ..................................................... 92
Fuel filler door ........................................... 92
Fuses .......................................................... 455
Garage door opener .......................... 383
Gas station information .....................608
Gauges .......................................................162
Glove box ................................................ 364
Grocery bag hooks .............................. 381
F
G

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Alphabetical index
Outer foot lightsOuter foot lights................................. 360
Wattage ................................................. 556
Outside rear view mirrors Adjusting and folding ......................... 83
Driving position memory ................. 68
Mirror position memory ................... 68
Outside temperature display ............ 169
Overhead console .............................. 370
Overheating, Engine ............................ 541
Overheating, Hybrid system............. 541
Parking brake .......................................... 163
Parking lights Replacing light bulbs ....................... 469
Switch ........................................................183
Wattage ................................................. 556
PCS.............................................................232
Personal lights Personal lights ....................................... 361
Switch ........................................................ 361
Wattage ................................................. 556
Power outlet ............................................374
Power switch............................................ 147
Power windows........................................ 86
Pre-collision system .............................232 Radar cruise control ............................205
Radiator ....................................................430
Radio ......................................................... 265
Radio data system ................................ 267
RDS ............................................................ 267
Rear side marker lights
Replacing light bulbs ........................ 479
Wattage ................................................. 556
Rear sunshade ....................................... 378
Rear turn signal lights Replacing light bulbs ........................470
Wattage ................................................. 556
Rear view mirror Compass................................................. 391
Rear window defogger ......................260
Replacing Electronic key battery ......................453
Fuses........................................................ 455
Light bulbs ............................................ 469
Tires ........................................................... 521
Reporting safety defects for 
U.S. owners ......................................... 586
Safety connect .......................................395
Scuff lighting ...........................................360
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