fuse Lexus GS350 2019 User Guide

GS350_300_OM_OM30G96U_(U)
4176-3. Do-it-yourself maintenance
6
Maintenance and care
■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. 420)
●If the replaced fuse blows again, have th e 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 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 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.

500
GS350_300_OM_OM30G96U_(U)7-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again follo
wing correct starting procedures.
( P. 203)
●There may be a malfunction in th e engine immobilizer system. (P. 77)
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 507)
●The battery terminal connections may be loose or corroded.
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletio n or a blown fuse. However, an interim
measure is available to start the engine. ( P. 501)
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. ( P. 507)
●There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
If the engine will not start even though correct starting procedures are being
followed (P. 203), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over
The starter motor does not turn over, the interior lights and headlights
do not turn on, or the horn does not sound.

590Alphabetical index
GS350_300_OM_OM30G96U_(U)
Fuel filler door ........................................ 234When the fuel filler door cannot be opened ......................... 237
Fuel pump shut off system................. 436
Fuses ............................................................414
Garage door opener ........................... 351
Gauges ................................................92, 98
Glove box ................................................ 339
Glove box light ...................................... 339
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ......................................... 171
Headlights ............................................... 222 Adaptive Front-lighting System (AFS) ................................... 223
Automatic High Beam system .... 225
Headlight leveling warning message ........................... 444
Light switch ........................................... 222
Replacing light bulbs ........................ 422
Headlights aim............................. 418, 577
Head-up display......................................126
Heated steering wheel ....................... 330 Heaters
Air conditioning system ...................316
Heated steering wheel ...................330
Seat heaters ............................................ 331
Outside rear view mirrors ............ 322
Hill-start assist control ........................296
Hood ..........................................................375 Open ....................................................... 375
Warning message............................. 444
Hooks Cargo hooks ....................................... 342
Coat hooks ...........................................350
Retaining hooks (floor mat)..............32
Horn............................................................. 174
I/M test ...................................................... 372
Identification........................................... 523 Engine ..................................................... 524
Vehicle .................................................... 523
Ignition switch (engine switch) ....... 203 Auto power off function .................205
Changing the engine switch modes .................................................. 204
If your vehicle has to be stopped in an emergency...........427
Starting the engine ............................ 204
Illuminated entry system ....................337
Immobilizer system ................................. 77
Indicators .....................................................87
G
H
I

595Alphabetical index
GS350_300_OM_OM30G96U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 266
Radiator .................................................... 390
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 327
Rear door sunshades .......................... 347
Rear personal lights............................. 336
Rear side marker lights ...................... 222 Light switch ........................................... 222
Replacing light bulbs ........................ 422
Welcome light illumination control ......................... 144
Rear seat heaters....................................331
Rear sunshade ....................................... 347 Operation .............................................. 347
Reverse operation feature............ 348 Rear turn signal lights ........................... 216
Replacing light bulbs ....................... 422
Turn signal lever ................................... 216
Rear view mirror Inside rear view mirror...................... 175
Outside rear view mirrors .............. 177
Rear view monitor system
*
Rear window defoggers .....................322
Refueling...................................................234 Capacity................................................. 525
Fuel types............................................... 525
Opening the fuel tank cap ............ 236
When the fuel filler door cannot be opened ..........................237
Remote Touch
*......................................310
Replacing Electronic key battery ....................... 412
Fuses .......................................................... 414
Light bulbs............................................. 420
Tires .......................................................... 475
Rev indicator ..................................... 94, 101
Rev peak ............................................94, 102
Reporting safety defects for U.S. owners .................................. 566
Resetting the message indicating maintenance is required ................ 368
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.