fuse Lexus IS300h 2017 User Guide

5527-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
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 correctly.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and repl ace the fuses as necessary.
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5537-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
Remove the fuse with the pullout
tool.
Only type A fuses can be removed
using the pullout tool.
Left side instrument panel (left-hand
drive vehicles)
Left side instrument panel (right-
hand drive vehicles)
Remove the lid. Remove the lid.
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5547-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
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 fo und on the fuse box lid.
Type C and D:
Contact any authorized Lexus retailer or Le xus authorized repairer, or any reliable repairer.
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Type AType B
Type CType D

5557-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
■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. 556)
●If the replaced fuse blows again, have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized re pairer, or any reliable repairer.
■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 vehicle. Because certain bulbs are connected to circui ts designed to prevent overload, non-gen-
uine parts or parts not designed for this vehicle may be unusable.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to th e 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 wi re, 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, re sulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload de termined and repaired by any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.

6268-2. Steps to take in an emergency
IS300h_EE(OM53D89E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 629)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 86)
●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 meas ure is available to start the hybrid sys-
tem. ( P. 627)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 631)
●The 12-volt battery terminal connections may be loose or corroded.
( P. 522)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perfor m the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( P. 219)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

6318-2. Steps to take in an emergency
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When trouble arises
IS300h_EE(OM53D89E)
If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your ve hicle by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or booster) cables, depending on the situa-
tion, the alarm may activate and doors
locked. (P. 94)
Open the hood ( P. 513) 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.
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 retailer or Lexus authorized repairer,
or any reliable repairer.
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679Alphabetical index
IS300h_EE(OM53D89E)
Front seats .................................................173
Adjustment .............................................. 173
Cleaning................................................ 506
Correct driving posture .................... 36
Driving position memory ................. 177
Head restraints..................................... 182
Power easy access system ............. 177
Seat heaters ......................................... 480
Seat position memory ....................... 177
Seat ventilators ................................... 480
Front turn signal lights......................... 233
Replacing light bulbs........................557
Turn signal lever ................................. 233
Wattage..................................................654
Fuel ............................................................. 253
Capacity .................................................646
Fuel gauge.............................................. 105
Information ........................................... 655
Refueling ................................................ 253
Type ..........................................................646
Warning light ....................................... 577
Fuel consumption .................................. 130
Average fuel
economy..........................130, 132, 134
Current fuel
consumption..................130, 132, 134
Fuel filler door ........................................ 253
If the fuel filler door
cannot be opened .........................255
Refueling ................................................ 253
Fuel gauge ................................................ 105
Fuses ..........................................................552
Gauges ...................................................... 105
Glove box................................................ 485
Glove box light ...................................... 485
Hands-free system
(for cellular phone) ............................. 421
Head restraints ........................................182
Headlight cleaner................................. 245
Headlights ............................................... 237
Automatic High Beam
system.................................................. 240
Follow me home system................ 238
Light switch............................................237
Replacing light bulbs ....................... 562
Heaters ..................................................... 466
Air conditioning system ................. 466
Heated steering wheel ................... 479
Outside rear view mirrors .............474
Seat heaters..........................................480
Hill-start assist control ........................ 352
High-voltage components ....................81
Hood............................................................513
Open ......................................................... 513
Pop Up Hood ........................................ 55
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685Alphabetical index
IS300h_EE(OM53D89E)
Rear personal lights .............................482
Wattage..................................................654
Rear sunshade ....................................... 493
Operation .............................................. 493
Reverse operation feature ............ 493
Rear turn signal lights.......................... 233
Replacing light bulbs........................562
Turn signal lever ................................. 233
Rear view mirror
Inside rear view mirror......................187
Outside rear view mirrors.............. 189
Rear view monitor system.................. 318
Rear window defogger ..................... 474
Refueling .................................................. 253
Capacity .................................................646
Fuel types ...............................................646
If the fuel filler door cannot
be opened .........................................255
Opening the fuel tank cap ............255
Regenerative braking ............................ 79
Remote Touch*....................................460
Replacing
Electronic key battery......................549
Fuses ........................................................552
Light bulbs ............................................ 556
Tires .......................................................... 537
Rev indicator............................................ 107
Rev peak .................................................... 107
Road accident cautions......................... 84
RSA (Road Sign Assist) ................... 288
Run-flat tires ............................................ 625
Seat belt reminder light ......................577
Seat belts..................................................... 38
Adjusting the seat belt ....................... 39
Child restraint system
installation ............................................. 68
Cleaning and maintaining
the seat belt....................................... 507
Emergency Locking
Retractor (ELR) ................................. 40
How to wear your seat belt ............ 38
How your child should wear
the seat belt.......................................... 40
Pregnant women, proper
seat belt use ........................................... 41
Reminder light and
buzzer...................................................577
Seat belt pretensioners...................... 39
SRS warning light .............................. 576
Seat heaters ............................................480
Seat position memory........................... 177
Seat ventilators ......................................480
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*: For vehicles with a 10 .3-inch display, refer to
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.