2015 Lexus GS300h fuse

457 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30F00E_(EE)
■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 5 8 )
●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 vehicle.
Because certain bulbs are connected to circuits designed to prevent overload, non-gen-
uine parts or parts not designed for this vehicle may be unusable.
WA R N I N G
■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.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional as soon
as possible.

543
7
7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (
→P. 549)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 8 4 )
●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 sys-
tem. ( →P. 544)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 5 5 1 )
●The 12-volt battery terminal connections may be loose or corroded.
(→ P. 4 2 8 )
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 5 5 1 )
●One or both of the 12-volt battery terminals may be disconnected. ( →P. 4 2 8 )
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional if the problem cannot be repaired, or if repair procedures are
unknown.
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( →P. 217)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.
The interior lights and he adlights do not turn on, or the horn does not
sound.

551
7
7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)
If the 12-volt battery is discharged
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.
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. 9 2 )
Open the hood ( →P. 4 1 7 ) , r e m o v e
the engine compartment covers
( → P. 421) and open the fuse box
cover.
Remove all of 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.
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
2
1
2
3

608Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Fuel ............................................................. 256Capacity ................................................ 569
Fuel gauge.............................................. 105
Information ............................................ 579
Refueling ................................................256
Type ........................................................ 569
Warning light ....................................... 478
Warning messages...........................482
Fuel consumption Average fuel consumption .............. 113
Average fuel consumption after refueling ...................................... 113
Current fuel consumption................ 113
Fuel filler door ........................................ 256
Refueling ................................................256
When the fuel filler door cannot be opened .........................258
Fuses ..........................................................453
Gauges ...................................................... 104
Glove box ................................................390
Glove box light ......................................390
Grille Shutter system
Warning message.............................482 Hands-free system
(for cellular phone)
*
Head restraints ....................................... 183
Headlight cleaner....................... 251, 253
Headlights ............................................... 236 Adaptive Front-lighting System (AFS)................................... 238
AHS (Adaptive High-beam System) ............................................... 240
Automatic High Beam system.................................................. 245
Follow me home system.................237
Headlight leveling warning message ............................................. 482
Light switch........................................... 236
Replacing light bulbs ....................... 465
Head-up display....................................... 119
Heated steering wheel........................ 381
Heaters ..................................................... 366
Air conditioning system ................. 366
Heated steering wheel ................... 382
Outside rear view mirrors .............372
Seat heaters.......................................... 382
High-voltage components ...................79
Hood............................................................ 417 Open ......................................................... 417
Warning message ............................ 482
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H

614Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Refueling .................................................. 256Capacity ................................................ 569
Fuel types .............................................. 569
Opening the fuel tank cap ............258
When the fuel filler door cannot be opened .........................258
Regenerative braking ............................ 76
Remote Touch
*
Replacing Electronic key battery........................451
Fuses ........................................................453
Light bulbs ............................................ 458
Tires ............................................................517
Rev indicator............................................ 106
Rev peak .................................................... 106
Road accident cautions.........................82
Seat belt reminder light ...................... 478
Seat belts .....................................................38
Adjusting the seat belt ........................ 39
Child restraint system installation.............................................. 66
Cleaning and maintaining
the seat belt .......................................... 411
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 ........... 478
Seat belt pretensioners ...................... 39
SRS warning light............................... 476 Seat heaters ............................................ 382
Seat position memory...........................178
Seat ventilators ...................................... 382
Seats............................................................. 175
Adjustment ............................................. 175
Adjustment precautions................... 176
Child seats/child restraint system installation ............................. 65
Cleaning .................................................. 410
Driving position memory ................ 178
Head restraints .....................................183
Power easy access system............. 178
Properly sitting in the seat................ 36
Seat heaters.......................................... 382
Seat position memory ....................... 178
Seat ventilators ................................... 382
Sensor Automatic headlight system ........ 239
Automatic High Beam system ... 245
Inside rear view mirror .....................189
Intrusion sensor and tilt sensor...... 93
Lexus parking assist-sensor
*
LDA (Lane Departure Alert with steering control)................... 290
LKA (Lane-Keeping Assist) .......... 281
Radar sensor ........................... 262, 338
Rain-sensing windshield wipers .................................................. 254
Service plug ................................................79
Service reminder indicators ............... 98
S-FLOW mode ..................................... 367
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