2010 Lexus HS250h fuse

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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

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3-4. Using the hands-free phone system (for cellular phones)
When receiving a phone call
■Answering the phone
Press the off-hook switch.
■ R
efusing the call
Press the on-hook switch.
Transferring a call
A call can be transferred between the cellular phone and system while
dialing, receiving a call, or during a call. Use one of the following meth -
ods:
a. Operate the cellular phone.
Refer to the manual that comes with the cellular phone for the opera -
tion of the phone.
b. Press the off-hook switch*1.
c. Press the talk switch and say “Call Transfer”
*2.
*1: This operation can be performed only when transferring a call
from the cellular phone to the system during a call.
*2: While the vehicle is in motion, calls cannot be transferred from
the system to the cellular phone.
Call waiting
When a call is interrupted by an incoming call from a third party, the fol-
lowing options will become available:
● Ans
wer the incoming call: Press the off-hook switch. (Press the off-
hook switch again as necessary to switch back and forth between
calls.)
● R
efuse the incoming call: Press the on-hook switch.

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3-7. Other interior features
Power outlets
■The power outlet can be used when
The “POWER” switch is in ACCESSORY or ON mode.
NOTICE
■To avoid damaging the power outlets
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short circuit.
■To prevent blown fuse
Do not use an accessory that uses more than 12 V 10 A.
■To prevent 12-volt battery discharge
Do not use the power outlet longer than necessary when the hybrid system is off.
The power outlet can be used for 12 V accessories that run on less than 10
A.

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
Engine compartment
Engine coolant reservoir 
( P. 4 2 8 )
Engine oil filler cap 
( P. 425)
Engine oil level dipstick 
( P. 4 2 4 )
Power control unit coolant
reservoir ( P. 4 2 8 )
Brake fluid reservoir  (P. 4 3 1 )Fuse box ( P. 455)
Engine coolant radiator 
( P. 430)
Power control unit coolant
radiator ( P. 430)
Condenser ( P. 430)
Electric cooling fans
Washer fluid tank 
( P. 4 3 2 )

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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.