fuse box Lexus HS250h 2010 Owner's Manual

422
4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)
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. 4 3 0 )
Power control unit coolant
radiator (→ P. 4 3 0 )
Condenser ( →P. 4 3 0 )
Electric cooling fans
Washer fluid tank (→P. 4 3 2 )

455
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
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 layout and amperage ratings”
(→ P. 458) for details about which fuse to check.

456
4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)
Remove the fuse.Only type A fuse can be
removed using the pullout tool.
Check if the fuse is blown.
Type A
Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amperage
rating can be found on the fuse
box lid.
Type BNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amperage
rating can be found on the fuse
box lid.

457
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75033U(Canada)
Type CNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amperage
rating can be found on the fuse
box lid.
Type DNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amperage
rating can be found on the fuse
box lid.

462
4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)Driver’s side instrument panel
FuseAmpereCircuit
1TA I L10 AParking lights, tail lights, license plate
lights, side maker lights, front fog lights
2PA N E L10 A
Navigation system, audio system, air
conditioning system, emergency
flashers switch, wiper de-icer switch,
seat heater switch, P position switch,
headlight cleaner switch, front pas-
senger’s seatbelt reminder light,
power window switch, VSC-OFF
switch, HUD switch, AFS-OFF switch,
POWER ·ECO· EV mode switch,
view select switch, trunk opener
switch, fuel lid opener switch, glove
box light, rear sun shade switch,
remote touch, rear view mirror switch

466
4-3. Do-it-yourself maintenance
HS250h_U_75033U(Canada)
■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, resulting 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.

536
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)
If the vehicle 12-volt battery is discharged
The following procedures may be used to start the hybrid system if the vehi-
cle’s 12-volt battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Open the hood and fuse box
cover.
Push the tab in and lift the lid off.
Open the exclusive jump start-
ing terminal cover.
Slightly pull the tab to open the
cover.

538
5-2. Steps to take in an emergency
HS250h_U_75033U(Canada)
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic.
■When the 12-volt battery is discharged
●The hybrid system may not start. (→P. 434)
●If the 12-volt battery is depleted with the shift position in P, it will not be possible
to shift out of P. In this case, the vehicle cannot be towed without lifting both
front wheels because the front wheels are locked by the parking lock.
(→ P. 4 8 3 )
●When the 12-volt battery is reconnected, start the hybrid system, depress the
brake pedal, and confirm that it is possible to shift into each shift position.
Close the exclusive jump starting terminal cover and reinstall
the fuse box cover.
Once the hybrid system starts, ha ve the vehicle inspected at your
Lexus dealer as soon as possible.

598
Alphabetical index
HS250h_U_75033U(Canada)
Front side marker lightReplacing light bulbs........................ 469
Wattage................................................. 558
Front turn signal lights
Replacing light bulbs........................ 469
Switch ....................................................... 159
Wattage................................................. 558
Fuel
Capacity................................................. 552
Fuel gauge .............................................. 162
Gas station information................. 608
Information............................................559
Refueling ................................................... 92
Type..........................................................559
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
Hands-free system (for cellular phone) ...........................328
Head restraints Adjustment ............................................... 71
Headlights aim ....................................... 467
Headlights cleaner .............................. 200
Headlights Adaptive front lighting
system ................................................... 185
Discharge headlights
precautions ...................................... 480
Replacing light bulbs........................ 469 Switch ........................................................ 183
Wattage .................................................558
Heaters Seat heaters ..........................................375
Side mirrors.......................................... 260
Hill-start assist control ........................ 230
Hood ............................................................419
Hooks
Grocery bag ......................................... 381
Horn .............................................................. 161
Hybrid system Emergency shut off system ..............28
Energy monitor/consumption ........................................ 32
Engine switch ........................................ 145
High voltage components................ 27
Hybrid system indicators ................ 165
Ignition switch ....................................... 145
Power switch ......................................... 145
I/M test .......................................................415
Identification Electric motor .......................................551
Engine ....................................................... 551
Vehicle....................................................550
Ignition switch ..........................................145
Illuminated entry system ....................360
Immobilizer system................................. 96
Indicator lights .........................................165
Initialization
Items to initialize.................................586
Inside rear view mirror ............................81
Instrument panel light control ...........163
Interior lights
Interior lights ........................................ 360
Switch ........................................................ 361
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