2020 LEXUS RC300 fuses

4TABLE OF CONTENTS
Checking and replacing fuses........................................................... 269
Headlight aim.................................. 271
Light bulbs ....................................... 272
7-1. Essential information Emergency flashers..................... 276
If your vehicle has to be stopped in an emergency ............................. 276
If the vehicle is trapped in rising water............................................... 277
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................... 279
If you think something is wrong ........................................................... 282
Fuel pump shut off system ........ 283
If a warning light turns on or a warn- ing buzzer sounds ..................... 284
If a warning message is displayed ........................................................... 292
If you have a flat tire..................... 296
If the engine wi ll not start .......... 303
If you lose your keys .................... 305
If the fuel filler door cannot be opened........................................... 305
If the electronic key does not oper- ate properly ................................. 306
If the vehicle battery is discharged ........................................................... 308
If your vehicle overheats ............. 311
If the vehicle becomes stuck .... 3158-1. Specifications
Maintenance data (fuel, oil level, etc.) .................................................. 318
Fuel information............................ 329
Tire information ............................. 331
8-2. Customization Customizable features ................341
8-3. Items to initialize Items to initialize ............................ 351
8-4. Certifications Certifications ................................. 352
9-1. For owners Reporting safety defects for U.S. owners ........................................... 362
Seat belt instructions for Canadian owners (in French) ................... 362
SRS airbag instructions for Cana- dian owners (in French) ......... 364
Headlight aim instructions for Canadian owners (in French).......................................................... 370
What to do if... (Troubleshooting) .......................................................... 372
Alphabetical Index ...................... 375
7When trouble arises
8Vehicle specifications
9For owners
Index

233
6
6
Maintenance and care
Maintenance and care
.6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 234
Cleaning and protecting the vehi- cle interior ................................. 237
6-2. Maintenance Maintenance requirements........................................................ 240
General maintenance .............. 241
Emission inspection and mainte- nance (I/M) programs ......... 244
6-3. Do-it-yourself maintenance Do-it-yourself service precautions........................................................ 245
Hood............................................... 247
Positioning a floor jack............ 247
Engine compartment............... 249
Tires ................................................ 257
Tire inflation pressure .............. 263
Wheels........................................... 265
Air conditioning filter...............266
Electronic key battery ............. 267
Checking and replacing fuses ........................................................ 269
Headlight aim............................... 271
Light bulbs .................................... 272

2456-3. Do-it-yourself maintenance
6
Maintenance and care
6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
Battery condition
( P.255)
•Warm water
• Baking soda
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( P.254)
• 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/inter-
cooler coolant
level( P.252)
•“Toyota Super Long
Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
• For the U.S.A.:“Toy- ota Super Long Life
Coolant” is
pre-mixed with 50%
coolant and 50%
deionized water.
•For Canada:“Toyota Super Long Life
Coolant” is
pre-mixed with 55%
coolant and 45%
deionized water.
•Funnel (used only for adding coolant)
Engine oil level
( P.250)
•“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for adding engine oil)
Fuses ( P.269)
•Fuse with same
amperage rating as
original
ItemsParts and tools

2696-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the engine switch off.
2 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.
Left side instrument panel
Remove the lid.
3Remove the fuse with the pullout
tool.
Only type A fuses can be removed using
the pullout tool.
4Check if the fuse is blown.
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.
Type A
Normal fuse
Blown fuse
Checking and replacing
fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses
A
B

2706-3. Do-it-yourself maintenance
Type BNormal fuse
Blown fuse
Type C
Normal fuse
Blown fuse
Type DNormal fuse
Blown fuse
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement.
●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
Lexus products designed for this vehicle.
Because certain bulbs are connected to cir-
cuits designed to prevent overload,
non-genuine parts or parts not designed for
this vehicle may be unusable.
A
B
A
B
A
B
WARNING
■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.

378Alphabetical Index
Ignition switch (engine switch) .............125
Overheating.................................................... 311
Tachometer ..................................................... 64
Engine coolant Capacity ........................................................... 321
Checking ....................................................... 252
Preparing and checking before winter.......................................................................... 198
Engine coolant temperature gauge ....... 64
Engine immobilizer system ........................ 56
Engine oil Capacity ......................................................... 320
Checking .......................................................250
Preparing and checking before winter.......................................................................... 198
Warning light ...............................................285
Engine oil maintenance data .................. 252
Engine oil pressure gauge ...........................72
Engine oil temperature gauge ...................72
Engine switch ..................................................125 Auto power off function ...........................128
Changing the engine switch modes.. 127
If your vehicle has to be stopped in an
emergency ................................................ 276
EPS (Electric Power Steering) ................194 Warning light ...............................................286
Event data recorder (EDR) ............................6
F
First-aid kit storage belt .............................. 221
Flat tire Tire pressure warning system .............260
Vehicles with a spare tire ...................... 296
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 322
Brake.................................................... 254, 323
Washer ........................................................... 256
Footwell light ................................................... 217
Front passenger occupant classification system .............................................................. 36 Front position lights
Wattage ..........................................................328
Front seats Adjustment ....................................................... 97
Cleaning ......................................................... 237
Correct driving posture ............................ 23
Driving position memory ........................ 100
Head restraints............................................. 103
Memory recall function............................ 102
Power easy access system .................... 100
Seat heaters ....................................................214
Seat position memory ..............................100
Seat ventilators ..............................................214
Front side marker light Light switch .....................................................137
Front turn signal lights Replacing light bulbs ................................ 272
Turn signal lever ...........................................134
Wattage ..........................................................328
Fuel Capacity .........................................................320
Fuel gauge ........................................................ 64
Fuel pump shut off system.....................283
Information ....................................................329
Refueling.......................................................... 149
Type ..................................................................320
Warning light .............................................. 288
Fuel consumption Average fuel economy ................................ 71
Current fuel consumption .......................... 71
Fuel filler door If the fuel filler do or cannot be opened
......................................................................... 305
Refueling.......................................................... 149
Fuel gauge ......................................................... 64
Fuel pump shut off system........................ 283
Fuses ................................................................. 269
G
Garage door opener ................................. 224
Gauges ............................................................... 64
Gear Position ....................................................73

382Alphabetical Index
Power control unit coolantPreparing and checking before winter.......................................................................... 198
Power easy access system ....................... 100
Power outlet .................................................. 222
Power steering (Elect ric power steering
system)............................................................194 Warning light ...............................................286
Power windows Door lock linked window operation..... 111
Jam protection function............................. 110
Operation......................................................... 110
Window lock switch ..................................... 111
Pre-Collision System (PCS) Function ........................................................... 156
PCS OFF switch ......................................... 158
Warning light ............................................... 287
Warning message..................................... 292
R
Radar cruise control (dynamic radar cruise control) ...........................................................170
Radiator ........................................................... 254
RCTA Function ........................................................... 184
Rear Cross Traffic Alert (RCTA) .......... 184
Rear seats .......................................................... 99 Head restraints ............................................ 103
Seat heaters .................................................... 214
Seat ventilators.............................................. 214
Rear side marker lights Light switch ..................................................... 137
Rear turn signal lights Turn signal lever ...........................................134
Wattage.......................................................... 328
Rear view mirror Inside rear view mirror..............................107
Outside rear view mirrors ..................... 108
Rear window defogger ................................ 211
Refueling Capacity ......................................................... 320
Fuel types....................................................... 320 If the fuel filler do
or cannot be opened
......................................................................... 305
Opening the fuel tank cap ..................... 149
Remote Touch .............................................. 202
Replacing Electronic key battery .............................. 267
Fuses.................................................................269
Light bulbs ..................................................... 272
Tires ..................................................................296
Resetting the message indicating mainte- nance is required ...................................... 240
Rev indicator .....................................................67
Rev peak..............................................................67
S
Seat belt reminder light.............................288
Seat belts............................................................ 24 Automatic Locking Retractor................. 26
Child restraint system installation ..40, 41
Cleaning and maintaining the seat belt.......................................................................... 237
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt ............................................................................. 25
Pregnant women, proper seat belt use ............................................................................. 24
Reminder light and buzzer .................. 288
Seat belt extender......................................... 25
Seat belt pretensioners .............................. 27
SRS warning light...................................... 285
Seat heaters ..................................................... 214
Seat position memory................................. 100
Seat ventilators ............................................... 214
Seating capacity.............................................123
Seats Adjustment ....................................................... 97
Cleaning ......................................................... 237
Driving position memory ........................ 100
Head restraints............................................. 103
Power easy access system .................... 100
Properly sitting in the seat ........................ 23