2013 Lexus IS300h fuse

4397-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
12-volt battery
P. 447
Engine compartment
Power control unit coolant res-
ervoir (P. 444)
Engine oil level dipstick
(P. 440)
Engine coolant reservoir
(P. 444)
Engine oil filler cap
(P. 441)Fuse box (P. 475)
Washer fluid tank (P. 446)
Electric cooling fans
Condenser (P. 446)
Power control unit coolant
radiator (P. 446)
Engine coolant radiator
(P. 446)1
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3
4
5
6
7
8
9
10

4757-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Turn the power switch off.
Open the fuse box cover.
Engine compartment:
Remove the clips.
Push the tabs on either side to
detach the lock and lift the lid off
while pulling the lock plate.
When installing the lid, check that
the lock plate and the tabs on
either side are connected cor-
rectly.
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.
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2

4767-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
Left side instrument panel (left-hand drive vehicles)
Remove the lid.
Left side instrument panel (right-hand drive vehicles)
Remove the lid.
Remove the fuse with the pullout
tool.
Only type A fuses can be removed
using the pullout tool.
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4777-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53B95E)
Check if the fuse is blown.
Normal fuse
Blown fuse
Type A and B:
Replace the blown fuse with a new fuse of an appropriate amperage rating.
The amperage rating can be found on the fuse box lid.
Ty p e C a n d D :
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
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2
Ty p e ATy p e B
Ty p e CTy p e D

4787-3. Do-it-yourself maintenance
IS300h_EE(OM53B95E)
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. 479)
If the replaced fuse blows again, have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehi-
cle. Because certain bulbs are connected to circuits designed to prevent overload,
non-genuine parts or parts not designed for this vehicle may be unusable.
CAUTION
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
Never use a fuse of a higher amperage rating than that 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.
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 any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional as soon as possible.

5468-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
One of the following may be the cause of the problem:
The electronic key may not be functioning properly. (P. 550)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
There may be a malfunction in the immobilizer system. (P. 9 0 )
There may be a malfunction in the steering lock system.
The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. (P. 547)
One of the following may be the cause of the problem:
The 12-volt battery terminal connections may be loose or corroded.
The 12-volt battery may be discharged. (P. 551)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situa-
tion. Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. (P. 209)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5518-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53B95E)
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 (P. 437) and
fuse box cover.
Remove the clips.
Push the tabs on either side to
detach the lock and lift the lid
off while pulling the lock
plate.
Open the exclusive jump starting
terminal cover.
If the 12-volt battery is discharged
The following procedures may be used to start the hybrid system if the
12-volt battery is discharged.
You can also call any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
1
1
2
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599Alphabetical index
IS300h_EE(OM53B95E)
Fuel ............................................241
Capacity ................................564
Fuel gauge ............................110
Information ...........................573
Refueling ..............................241
Type ..............................241, 564
Warning light........................509
Fuel consumption ......................125
Average fuel economy..........117
Current fuel consumption .....117
Fuel filler door...........................241
If the fuel filler door
cannot be opened................243
Refueling ..............................241
Fuel gauge .................................110
Fuses ..........................................475
Gauges .......................................110
Glove box ..................................414
Glove box light ..........................414Hands-free system
(for cellular phone) ................ 367
Head restraints .......................... 173
Headlight cleaner...................... 235
Headlights................................. 226
Automatic High Beam
system................................ 229
Discharge headlights
precautions ........................ 494
Follow me home system ...... 227
Light switch ......................... 226
Replacing light bulbs ........... 493
Wattage ................................ 572
Heaters ...................................... 398
Air conditioning system....... 398
Heated steering wheel.......... 409
Outside rear view mirrors .... 404
Seat heaters .......................... 410
Hill-start assist control.............. 293
High-voltage components........... 83
Hood ......................................... 437
Open..................................... 437
Pop Up Hood ......................... 56
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