2018 LEXUS RCF fuses

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876432
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RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 55-4. Using the other interior
features
Other interior features ............ 354
• Sun visors ................................ 354
• Vanity mirrors ....................... 354
• Clock ........................................ 355
• Power outlet .......................... 355
• Armrest.................................... 356
•Trunk storage
extension ................................. 357
• Assist grips .............................358
• Coat hooks.............................358
Garage door opener ............... 359
Compass ....................................... 366
LEXUS Enform Safety
Connect...................................... 370 6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................ 376
Cleaning and protecting
the vehicle interior................... 381
6-2. Maintenance
Maintenance
requirements ............................ 384
General maintenance.............. 387
Emission inspection and
maintenance (I/M)
programs.................................... 390
6-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions .................................391
Hood ............................................... 393
Positioning a floor jack ............ 394
Engine compartment ............... 397
Tires ................................................... 412
Tire inflation pressure .............. 420
Wheels ........................................... 423
Air conditio ning filter ............... 425
Electronic key battery...............427
Checking and replacing
fuses.............................................. 429
Light bulbs .................................... 4326
Maintenance and care

375
Maintenance and care
6
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ................ 376
Cleaning and protecting
the vehicle interior................... 381
6-2. Maintenance
Maintenance
requirements ............................384
General maintenance.............. 387
Emission inspection and
maintenance (I/M)
programs ....................................390
6-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions................................. 391
Hood ............................................... 393
Positioning a floor jack ............ 394
Engine compartment ............... 397
Tires ...................................................412
Tire inflation pressure............... 420
Wheels ........................................... 423
Air conditioning filter ............... 425
Electronic key battery .............. 427
Checking and replacing
fuses .............................................. 429
Light bulbs..................................... 432

391
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 6
Maintenance and care 6-3. Do-it-yourself maintenance
Do-it-yourself service precautions If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections. Items Parts and tools
Battery condition
(  P. 408) •Warm water • Baking soda •Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(  P. 407) • SAE J1703 or FMVSS No.116 DOT 3 brake fluid
• SAE J1704 or FMVSS No.116 DOT 4 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/intercooler
coolant level
(  P. 404) • “Toyota Super Long Life Coolan t” or a similar high quality
ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Cool ant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 400) • “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
(  P. 429) • Fuse with same amperage rating as original
Light bulbs
(  P. 432) • Bulb with same number and wattage rating as original
• Phillips-head screwdriver •Flathead sc rewdriver
•Wrench
Radiator, condenser
and intercooler radi-
ator (  P. 406)

Tire inflation pres-
sure (  P. 420) • Tire pressure gauge • Compressed air source
Washer fluid
(  P. 411) • Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

4296-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 6
Maintenance and care Turn the engine switch off.
Open the Fuse box cover. 
Engine compartment: type A fuse box
Push the tab in and lift the lid off. 
Engine compartment: type B fuse box
Push the tab in and lift the lid off. 
Driver’s side instrument panel
Remove the lid.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.1
2

430 6-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Remove the fuse with the pullout
tool. Only type A fuses can be removed
using the pullout tool.
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.
Type C and D:
Contact your Lexus dealer. 3
4
1
2
Type A 
Type B
Type C 
Type D

4316-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 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. 432)●
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, protec ting the wiring ha rness 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.
NOTICE ■
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus dealer as
soon as possible.

622 Alphabetical index
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)First-aid kit storage belt ..................... 353
Flat tire
Vehicles with a spare tire.............. 489
Vehicles with emergency tire
puncture repair kit......................... 502
Floor mats ................................................... 30
Fluid
Automatic transmission ................. 545
Brake ........................................................547
Washer ...................................................... 411
Fog lights .................................................. 232
Replacing light bulbs ........................439
Switch....................................................... 232
Footwell light .......................................... 347
Wattage ................................................. 553
Front fog lights ....................................... 232
Replacing light bulbs ........................439
Switch....................................................... 232
Front passenger occupant
classification system ..............................51
Front seats .................................................. 161
Adjustment ............................................... 161
Cleaning .................................................. 381
Correct driving posture .................... 32
Driving position memory ................ 166
Head restraints ....................................... 171
Jam protection function ................... 162
Power easy access system ............ 166
Seat heaters ..........................................345
Seat position memory....................... 166
Seat ventilators ....................................346 Front turn signal lights .......................... 221
Replacing light bulbs ........... 434, 439
Turn signal lever ................................... 221
Wattage .................................................553
Fuel............................................................... 241
Capacity.................................................540
Fuel gauge ........................................ 91, 96
Fuel pump shut off system ............ 452
Information............................................554
Refueling .................................................. 241
Type............................................. 540, 554
Warning light .......................................455
Fuel consumption
Average fuel economy .......... 108, 122
Current fuel
consumption............................ 108, 122
Fuel filler door.......................................... 241
If the fuel filler door
cannot be opened ......................... 243
Refueling .................................................. 241
Fuel gauge ...........................................91, 96
Fuel pump shut off system .................452
Fuses...........................................................429F

628 Alphabetical index
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Radar cruise control (dynamic
radar cruise control) ........................ 268
Radiator .................................................... 406
Rear seats ..................................................164
Fold down the seatback .................. 164
Luggage security system ................ 152
Rear turn signal lights ........................... 221
Replacing light bulbs ........................ 432
Turn signal lever ................................... 221
Wattage ................................................. 553
Rear view mirror
Inside rear view mirror ......................176
Outside rear view mirrors .............. 178
Rear window defogger ...................... 338
Refueling .................................................... 241
Capacity ................................................ 540
Fuel types .............................................. 540
If the fuel filler door
cannot be opened ......................... 243
Opening the fuel tank cap............. 243
Remote Touch
* Replacing
Electronic key battery ...................... 427
Fuses.........................................................429
Light bulbs ............................................. 432
Tires ......................................................... 489
Reporting safety defects
for U.S. owners...................................600
Resetting the message indicating
maintenance is required ................385
Rev indicator ..................................... 93, 99
Rev peak ...........................................93, 100 Seat belt reminder light ..................... 455
Seat belts .....................................................34
Automatic Locking Retractor ........ 36
Child restraint system
installation ............................................. 58
Cleaning and maintaining
the seat belt ....................................... 382
Emergency Locking
Retractor................................................ 36
How to wear your seat belt............. 34
How your child should wear
the seat belt .......................................... 36
Pregnant women, proper
seat belt use ..........................................37
Reminder light and buzzer ...........455
Seat belt extender ................................ 36
Seat belt guide ....................................... 35
Seat belt pretensioners...................... 35
SRS warning light .............................. 453R S