engine LEXUS RC300 2020 Owners Manual
Page 351 of 390
3498-2. Customization
8
Vehicle specifications
■Illumination (P.217)
■Seat belt reminder ( P.288)
■Vehicle customization●When the smart acc ess system with 
push-button start is off, the entry unlock 
FunctionDefault settingCustomized setting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O—O7.5 seconds
30 seconds
Operation after the engine 
switch is turned offOnOff——O
Operation when the doors 
are unlockedOnOff——O
Operation when you 
approach the vehicle with the 
electronic key on your person
OnOff——O
Remote Touch pad lightOnOff——O
Time elapsed before the outer 
foot lights turn off15 seconds
Off
O—O7.5 seconds
30 seconds
Operation of the outer foot 
lights when you approach the 
vehicle with the electronic 
key on your person
OnOff——O
Operation of the outer foot 
lights when the doors are 
unlocked with the power 
door lock switch
OnOff——O
Operation of the outer foot 
lights when a door is openedOnOff——O
Fading out of the outer foot 
lights when they turn offLongShort——O
ABC
FunctionDefault settingCustomized setting
Vehicle speed linked seat belt 
reminder buzzerOnOff——O
ABC 
Page 352 of 390
3508-2. Customization
function cannot be customized.
●When the doors remain closed after 
unlocking the doors and the timer acti-
vated automatic door lock function acti-
vates, signals will be generated in 
accordance with the operation buzzer 
volume and operational signal (Emer-
gency flashers) function settings.
●Some settings can be changed using a 
switch or the Center Display. If a setting is 
changed using a switch, the changed set-
ting will not be reflected on the Center 
Display screen until the engine switch is 
turned off and then to IGNITION ON 
mode. 
Page 353 of 390
3518-3. Items to initialize
8
Vehicle specifications
8-3.Items to initialize
Items to initialize
The following items must be initialized for normal system operation after such 
cases as the battery being reconnected,  or maintenance being performed on 
the vehicle:
List of items to initialize
ItemWhen to initializeReference
Message indicating 
maintenance is 
required (U.S.A. only)
After the maintenance is performedP.240
Engine oil mainte-
nance dataAfter changing the engine oilP.252
Tire pressure warning 
system
• When rotating the tires
• When changing the tire inflation pres- sure by changing traveling speed or 
load weight, etc.
P.262 
Page 374 of 390
372What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys, 
new genuine mechanical keys can 
be made by your Lexus dealer. 
( P.305)
 If you lose your electronic keys, the 
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer 
immediately. ( P.305)
 Is the electronic key battery weak or 
depleted? ( P.267)
 Is the engine switch in IGNITION 
ON mode?
When locking the doors, turn the engine 
switch off. ( P.127)
 Is the electronic key left inside the 
vehicle?
When locking the doors, make sure that 
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio 
wave. ( P.94)
 The function to prevent the elec-
tronic key from being left inside the 
trunk will operate and you can open 
the trunk as usual. Take the key out 
from the trunk. ( P.91)
 Did you press the engine switch 
while firmly depressing the brake 
pedal? ( P.125)
 Is the shift lever in P? ( P.125)
 Is the electronic key anywhere 
detectable inside the vehicle? 
( P.93)
 Is the steering wheel unlocked? 
( P.125)
 Is the electronic key battery weak or 
depleted?
In this case, the engine can be started in a 
temporary way. ( P.307)
 Is the battery discharged? 
( P.308)
If you have a problem, check the 
following before contacting your 
Lexus dealer.
The doors cannot be locked, 
unlocked, opened or closed
You lose your keys
The electronic key does not 
operate properly
The doors cannot be locked or 
unlocked
The trunk lid is closed with the 
electronic key left inside
If you think something is wrong
The engine does not start
The shift lever cannot be shifted 
from P even if you depress the 
brake pedal 
Page 375 of 390
373What to do if... (Troubleshooting)
Is the engine switch in IGNITION 
ON mode?
If you cannot release the shift lever by 
depressing the brake pedal with the engine 
switch in IGNITION ON mode. ( P.130)
 It is locked automatically to prevent 
theft of the vehicle. ( P.125)
 Is the window lock switch pressed?
The power window except for the one at 
the driver’s seat cannot be operated if the 
window lock switch is pressed. ( P.111)
 The auto power off function will be 
operated if the vehicle is left in 
ACCESSORY or IGNITION ON 
mode (the engine is not running) for 
a period of time. ( P.128)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger 
wearing the seat belts? ( P.288)
 The parking brake indicator is on
Is the parking brake released? ( P.135)
Depending on the situation, other 
types of warning buzzer may also 
sound. ( P.284, 292)
 Did anyone inside the vehicle open 
a door during setting the alarm?
The sensor detects it and the alarm sounds. 
( P.57)
Do one of the following to deactivate 
or stop the alarm:
 Unlock the doors.
 Open the trunk using the entry 
function or wireless remote control.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or 
start the engine.
 Is the message displayed on the 
multi-information display?
Check the message on  the multi-informa-
tion display. ( P.292)
 When a warning light turns on or a 
warning message is displayed, refer 
to P.284, 292.
The steering wheel cannot be 
turned after the engine is 
stopped
The windows do not open or 
close by operating the power 
window switches
The engine switch is turned off 
automatically
A warning buzzer sounds during 
driving
An alarm is activated and the 
horn sounds
A warning buzzer sounds when 
leaving the vehicle
A warning light turns on or a 
warning message is displayed 
Page 378 of 390
376Alphabetical Index
Exterior ........................................................... 234
Interior ............................................................. 237
Seat belts........................................................ 237
Cargo capacity...............................................123
Cargo hooks ................................................... 221
Center Display ............................................. 204
Chains ................................................................199
Child restraint system Child seats definition................................... 40
Child seats installation........................ 44, 47
Front passenger occupant classification system ............................................................. 36
Installing a CRS to the front passenger  seat ....................................................................42
Installing CRS with LATCH anchors . 48
Installing CRS with top tether strap.....50
Riding with children ..................................... 40
Types of child restraint system installation  method ............................................................. 41
Using an anchor bracket .......................... 49
Child safety Airbag precautions.......................................32
Battery precautions ....................... 256, 310
Child restraint system.......................... 40, 41
Heated steering wheel or seat heater precautions.................................................. 214
How your child should wear the seat belt ............................................................................ 25
Installing child restraints ............................ 40
Moon roof precautions ..............................114
Power window lock switch........................ 111
Removed electronic key battery precau- tions ...............................................................268
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 40
Trunk precautions ........................................ 89
Cleaning Aluminum wheels ...................................... 234
Exterior ........................................................... 234
Interior ............................................................. 237
Radar sensor..................................................152
Seat belts........................................................ 237 Clock ........................................................ 64, 222
Clock settings ............................................... 222
Coat hooks..................................................... 222
Compass ......................................................... 229
Condenser ..................................................... 254
Console box .................................................. 220
Consumption screen ..................................... 77
Cooling system............................................. 252
Engine overheating...................................... 311
Cornering lights ............................................ 138 Replacing light bulbs ................................ 272
Cruise control Dynamic radar cruise control............... 170
Cup holders ................................................... 220
Current fuel consumption ............................ 71
Curtain shield airbags .................................. 28
Customizable features ................................341
D
Daytime running light system ................... 137
Daytime running lights Replacing light bulbs ................................ 272
Defogger Outside rear view mirrors........................ 211
Rear window ................................................... 211
Windshield ....................................................... 211
Differential Front differential oil............. ....................... 323
Rear differential oil......... ..................... ....... 323
Dimension ....................................................... 318
Dinghy towing................................................. 124
Display Center Display ............................................204
Drive information ............................................ 71
LDA (Lane Departure Alert with steering control) ......................................................... 165
Multi-information display .......................... 69
Warning messages...................................293
Distance until next engine oil change .... 68
Do-it-yourself maintenance ......................241
Door courtesy lights ..................................... 217 
Page 379 of 390
377Alphabetical Index
Door lockDoors.................................................................. 86
Smart access system with push-button start ................................................................... 93
Wireless remote control........................... 84
Doors Automatic door lock ing and unlocking 
system .............................................................88
Door glasses ................................................... 110
Door lock.......................................................... 86
Open door warning buzzer .........87, 88,  288
Open door warning light ......................288
Outside rear view mirrors ..................... 108
Drive distance .................................................... 71
Drive info 1/Drive info 2/Drive info 3...... 71
Drive information ............................................. 71
Driver’s seat position memory Driving position memory........................ 100
Memory recall function ............................102
Power easy access system .................... 100
Drive-start control ......................................... 117
Driving Break-in tips .....................................................117
Correct driving posture .............................23
Driving mode select switch .................... 192
Procedures ...................................................... 116
Winter drive tips.......................................... 198
Driving assist system information display ..............................................................................74
Driving information display .......................... 71
Driving position memory........................... 100 Memory recall function ............................102
Power easy access system .................... 100
Driving range ..................................................... 71
DRS (Dynamic Rear Steering) ................194
Dynamic radar cruise control ..................170 Warning message............ ............... 177, 292
Dynamic Rear Steering (DRS) ................194
E
Eco Driving Indicator.....................................72 Eco Driving Indicator Light .........................72
EDR (Event data recorder) ............................6
Elapsed time ....................................................... 71
Electric Power Steering (EPS) ................194
Warning light .............................................. 286
Electronic key .................................................. 82 Battery-saving function.............................. 94
If the electronic key does not operate properly ...................................................... 306
Replacing the battery ............................... 267
Emergency flashers .....................................276
Emergency, in case of If a warning buzzer sounds...................284
If a warning light turns on.......................284
If a warning message is displayed ..... 292
If the battery is discharged ................... 308
If the electronic key does not operate properly ...................................................... 306
If the engine will not start....................... 303
If the fuel filler do or cannot be opened
......................................................................... 305
If the vehicle is trapped in rising water .......................................................................... 277
If you have a flat tire ..................................296
If you lose your keys ................................ 305
If you think something is wrong..........282
If your vehicle becomes stuck .............. 315
If your vehicle has to be stopped in an  emergency ................................................. 276
If your vehicle needs to be towed ..... 279
If your vehicle overheats ........................... 311
Engine ACCESSORY mode................................ 127
Compartment.............................................. 249
Engine switch ................................................ 125
Fuel pump shut off system.....................283
Hood ................................................................ 247
How to start the engine ........................... 125
Identification number ................................ 319
If the engine will not start....................... 303
If your vehicle has to be stopped in an emergency ................................................. 276 
Page 380 of 390
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 
Page 381 of 390
379Alphabetical Index
G-force................................................................72
Glove box .........................................................219
Glove box light ............................................. 220
H
Head restraints .............................................. 103
Headlight aim .................................................. 271
HeadlightsAutomatic High Beam system..............139
Light switch ..................................................... 137
Replacing light bulbs.................................272
Wattage.......................................................... 328
Heated steering wheel ................................ 214
Heaters Automatic air conditioning system ... 207
Heated steering wheel.............................. 214
Outside rear view mirrors ........................211
Seat heaters .................................................... 214
High mounted stoplight Replacing light bulbs.................................272
Hill-start assist control .................................194
Hood Open ............................................................... 247
Hooks Cargo hooks.................................................. 221
Coat hooks ....................................................222
Retaining hooks (floor mat)......................22
Horn ....................................................................107
I
I/M test ............................................................ 244
Identification Engine ...............................................................319
Vehicle ............................................................. 318
Ignition switch (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
Illuminated entry system .............................218
Indicators ........................................................... 62 Initialization
Items to initialize .......................................... 351
Maintenance.....................................240, 252
Power windows ............................................. 110
Tire pressure warning system ............. 262
Inside rear view mirror ................................107
Instrument panel light  control ................... 69
Intercooler...................................................... 254
Intercooler coolant Capacity ...........................................................321
Checking ....................................................... 252
Interior lights.................................................... 217 Front interior light ........................................ 217
Rear interior light.......................................... 217
Intuitive parking assist Warning message ...................................... 180
J
JackPositioning a floor jack ............................ 247
Vehicle-equipped jack ...........................296
Jack handle .................................................... 296
Jam protection function Moon roof ........................................................ 113
Power windows ............................................. 110
K
Keyless entrySmart access system with push-button start ................................................................... 93
Wireless remote control ...........................84
Keys Battery-saving function.............................. 94
Electronic key ................................................. 82
Engine switch ................................................ 125
If the electronic key does not operate properly ...................................................... 306
If you lose your keys ................................ 305
Key number plate ......................................... 82
Keyless entry ..........................................86, 93
Mechanical key .............................................. 82 
Page 383 of 390
381Alphabetical Index
Moon roofDoor lock linked moon roof operation............................................................................ 113
Jam protection function............................. 113
Operation..........................................................112
Multi-information display ............................ 69 Audio system-linked display....................74
Boost gauge.....................................................72
Drive information ............................................ 71
Drive information 1/Drive information 2/Drive information 3............................... 71
Driving assist system information display .............................................................................74
Dynamic radar cruise control ...............170
Eco Driving Indicator ..................................72
Engine oil pressure gauge ........................72
Engine oil temperature gauge ................72
Gear Position ..................................................73
G-force...............................................................72
LDA (Lane Departure Alert with steering  control) ......................................................... 165
Menu icons ...................................................... 70
Meter control switches .............................. 70
Navigation system-linked display .........74
Settings ...............................................................74
Tire pressure ....................................... 73, 260
Units .....................................................................73
Vehicle sway warning .................................73
Warning message display ........................74
Warning messages .................................. 292
N
Navigation system-linked display.............74
Noise from under vehicle .............................. 5
O
“ODO TRIP” switch ...................................... 68
Odometer ......................................................... 68
Odometer and trip meter display “ODO TRIP” switch .................................... 68 Oil
Engine oil........................................................320
Front differential oil............. ....................... 323
Rear differential oil......... ..................... ....... 323
Opener Fuel filler door ............................................... 149
Hood ................................................................ 247
Trunk ...................................................................90
Outer foot lights Location ............................................................ 217
Outside rear view mirrors Adjustment ..................................................... 108
BSM (Blind Spot Monitor)..................... 184
Folding.............................................................. 109
Linked mirror functi on when reversing
........................................................................... 109
Mirror position memory ..........................100
Outside rear view mirror defoggers .. 211
RCTA function ............................................. 184
Outside temperature.................................... 64
Overheating ..................................................... 311
P
Paddle shift switches ........................... 131, 132
Panic mode ....................................................... 84
Parking brake Operation ....................................................... 135
Parking brake engaged warning buzzer........................................................................... 135
Warning light .............................................. 286
Warning message ...................................... 135
Parking lights Light switch .....................................................137
Replacing light bulbs ................................ 272
PCS (Pre-Collision System) Function ........................................................... 156
PCS OFF switch ......................................... 158
Warning light ...............................................287
Warning message ..................................... 292
Personal lights................................................. 217