2015 Lexus GS450h fuse

474
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
■Trunk
FuseAmpereCircuit
1PSB30Pre-collision seat belts
2PTL25Power trunk opener and closer
3RR J/B-B10Smart access system with push-button start
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10No circuit
7DC/DC-S (HV)7. 5DC/DC converter
8BATT FAN (HV)20Hybrid battery (traction battery) cooling fan
system
9SECURITY7. 5SECURITY
10ECU-B NO.37. 5Parking brake
11TRK OPN7. 5Power trunk opener and closer, trunk open
motor
12DCM (HV)7. 5DCM
13AC INV (HV )20Po w e r o u t l e t ( 1 2 0 V AC )
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system
16EPS-IG5Electric power steering system
17BACK UP7. 5Back-up lights, Remote Touch screen

GS450h_OM_OM30F70U_(U)
4756-3. Do-it-yourself maintenance
6
Maintenance and care
■The upper part of the 12-volt battery*
*
: When one or more of the fuses in this unit are blown, the unit needs to be replaced as a whole.
FuseAmpereCircuit
1EPB30Parking brake
2LUG-J/B BATT40Luggage compartment junction block
3EPS80Electric power steering
4ARS80Dynamic rear steering
5MAIN220Engine compartment junction block

476
GS450h_OM_OM30F70U_(U)
6-3. Do-it-yourself maintenance
■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 7 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, protecting the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you use genuine Lexu s products designed for this vehicle.
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.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.

554
GS450h_OM_OM30F70U_(U)
7-2. Steps to take in an emergency
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. 560)
●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 1 )
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctio ning due to an electrical problem
such as electronic key battery de pletion or a blown fuse. However,
depending on the type of malfuncti on, an interim measure is available
to start the hybrid system. ( P. 555)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 562)
●The 12-volt battery terminal connecti ons may be loose or corroded.
Reasons for the hybrid system not st arting vary depending on the situa-
tion. Check the following and perf orm the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 1 9 3 )
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

639Alphabetical index
GS450h_OM_OM30F70U_(U)
First-aid kit storage net ...................... 373
Flat tire ........................................................541
Floor mats ................................................... 28
FluidBrake ......................................................... 581
Hybrid transmission......................... 580
Washer .................................................. 438
Fog lights .................................................. 222 Replacing light bulbs .............481, 489
Switch....................................................... 222
Wattage ................................................. 583
Footwell light .......................................... 363
Front passenger occupant classification system ............................ 49
Front personal lights............................ 364
Front seats ................................................ 150 Adjustment ............................................. 150
Cleaning ...................................................412
Correct driving posture ....................30
Driving position memory ................ 152
Head restraints ..................................... 158
Power easy access system ............ 152
Seat heaters ......................................... 382
Seat position memory....................... 152
Seat ventilators ................................... 382
Front side marker lights ....................... 217 Light switch ............................................. 217
Replacing light bulbs ....................... 489
Welcome light illumination control ....................................................123
Front turn signal lights ........................ 209 Replacing light bulbs ....................... 483
Turn signal lever ................................ 209
Wattage ................................................. 583 Fuel............................................................. 230
Capacity................................................. 576
Fuel gauge ................................................. 91
Information............................................584
Refueling ................................................ 230
Type..............................................230, 576
Warning light ...................................... 506
Warning messages ..........................528
Fuel consumption Average fuel consumption .............. 98
Average fuel consumption after refueling .......................................97
Current fuel consumption.................97
Fuel filler door........................................ 230 Refueling ................................................ 230
When the fuel filler door cannot be opened ......................... 233
Fuses...........................................................462
Garage door opener.......................... 393
Gauges.......................................................... 91
Glove box ............................................... 368
Glove box light...................................... 368
F
G

645Alphabetical index
GS450h_OM_OM30F70U_(U)
Pre-Collision System (PCS) ............ 290Function ................................................. 290
PCS OFF switch ................................ 292
Warning light ...................................... 505
Warning message .......................515, 526, 532
Radar cruise control (dynamic radar cruise control) ........................ 239
Radiator .................................................... 436
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 355
Rear door sunshades ..........................388
Rear personal lights............................. 364
Rear side marker lights ........................ 217 Light switch ............................................. 217
Replacing light bulbs ....................... 489
Welcome light illumination cont rol ..........................123
Rear seat heaters.................................. 382
Rear sunshade ....................................... 387 Operation ..............................................387
Reverse operation feature............ 388 Rear turn signal lights ......................... 209
Replacing light bulbs ....................... 487
Turn signal lever ................................. 209
Wattage .................................................583
Rear view mirror Inside rear view mirror...................... 162
Outside rear view mirrors ..............164
Rear view monitor system
*
Rear window defoggers .................... 360
Refueling.................................................. 230 Capacity................................................. 576
Fuel types............................................... 576
Opening the fuel tank cap ............ 232
When the fuel filler door cannot be opened ......................... 233
Regenerative braking............................. 74
Remote Touch
*.....................................326
Replacing Electronic key battery .....................460
Fuses ........................................................ 462
Light bulbs............................................. 479
Tires ............................................................541
Reporting safety defects for U.S. owners .................................... 612
Resetting the message indicating maintenance is required .................. 416
Road accident cautions ......................... 79
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.