2019 LEXUS RC300 check

3208-1. Specifications
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
■Spark plug
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
Ignition system (spark plug)
RC350/RC300 AWDRC300
MakeDENSO FK20HBR8NGK DILFR7K9G
Gap0.031 in. (0.8 mm)0.035 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (battery)
Open voltage at 68°F (20°C):
12.3 V or higher
If the voltage is lower than the standard value,
charge the battery.
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A max.
Automatic transmission
Fluid capacity*
RC350
10.0 qt. (9.5 L, 8.4 Imp. qt.)
RC350 AWD/RC300 AWD
10.6 qt. (10.0 L, 8.8 Imp. qt.)
RC300
9.2 qt. (8.7 L, 7.7 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ca use deterioration in
shift quality, locking up of your transmission accompanied by vibration, and ultimately
damage the transmission of your vehicle.

370What to do if... (Troubleshooting)
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
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.303)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.303)
 Is the electronic key battery weak or
depleted? ( P.265)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( 
P.126)
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.305)
Is the battery discharged?
( P.306)
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

3711-1. What to do if... (Troubleshooting)
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810371What 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.129)
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.127)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( 
P.286)
The parking brake indicator is on
Is the parking brake released? ( P.134)
Depending on the situation, other
types of warning buzzer may also
sound. (P.282, 290)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
P.58)
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.290)
When a warning light turns on or a
warning message is displayed, refer
to P.282, 290.
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

3731-1. What to do if... (Troubleshooting)
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810373Alphabetical Index
Alphabetical Index
A
A/C Air conditioning filter ............................... 264
Automatic air conditioning system ...205
Micro dust and pollen filter...................209
ABS (Anti-lock Brake System)................192 Warning light ............................................... 283
Active Sound Control (ASC) ..................134
Adaptive Variable Suspension System 192
Air conditioning filter ................................. 264
Air conditioning system Air conditioning filter ............................... 264
Automatic air conditioning system ...205
Micro dust and pollen filter...................209
Airbags Airbag operating conditions................... 30
Airbag precautions for your child .........32
Correct driving posture .............................23
Curtain shield airbag operating condi-tions .................................................................. 30
Curtain shield airbag precautions ........32
Front passenger occupant classification system ............................................................. 36
General airbag precautions ....................32
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ......... 30
Side airbag precautions .............................32
Side and curtain shield airbags operating conditions...................................................... 30
Side and curtain shield airbags precau- tions ...................................................................32
SRS airbags ..................................................... 28
SRS warning light ...................................... 283
Alarm ................................................................... 58 Warning buzzer ......................................... 282
Anchor brackets ............................................... 41
Antennas (smart access system with push-button start)........................................ 93
Anti-lock Brake System (ABS)................192 Warning light ............................................... 283 Approach warning........................................ 173
ASC (Active Sound Control) ..................134
Assist grips ..................................................... 220
Audio system-linked display ...................... 75
Automatic air conditioning system ...... 205
Automatic headlight leveling system .... 137
Automatic High Beam ............................... 138
Automatic light control system................136
Automatic transmission ..............................128
M mode ............................................................. 131
Paddle shift switches ........................ 130, 131
Snow mode.................................................... 130
Average fuel economy..................................72
Average vehicle speed .................................72
B
Back-up light Replacing light bulbs ................................270
Wattage ..........................................................326
Battery Battery checking ........................................253
If the battery is discharged ................... 306
Preparing and checking before winter.....196
Warning light ...............................................282
Boost gauge.......................................................74
Brake Fluid.....................................................................321
Parking brake ................................................134
Warning light ...............................................282
Brake assist ......................................................192
Break-in tips...................................................... 117
Brightness control Instrument panel light control................... 71
C
Card key ............................................................ 82
CareAluminum wheels ...................................... 232
Exterior............................................................ 232
Interior .............................................................235

376Alphabetical Index
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
Checking .......................................................250
Preparing and checking before winter .... 196
Engine coolant temperature gauge ....... 66
Engine immobilizer system .........................57
Engine oil Capacity .......................................................... 318
Checking ....................................................... 248
Preparing and checking before winter ....196
Warning light ............................................... 283
Engine oil maintenance data .................. 250
Engine oil pressure gauge ...........................74
Engine oil temperature gauge ...................74
Engine switch ..................................................125 Auto power off function ........................... 127
Changing the engine switch modes.. 126
If your vehicle has to be stopped in an
emergency ................................................ 274
EPS (Electric Power Steering) ................192 Warning light ............................................... 284
Event data recorder (EDR) ............................6
F
First-aid kit storage belt ..............................219
Flat tire Tire pressure warning system .............258
Vehicles with a spare tire ...................... 294
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 320
Brake...................................................... 252, 321
Washer ........................................................... 254
Footwell light ...................................................215
Front passenger occupant classification system .............................................................. 36
Front position lights Wattage.......................................................... 326
Front seats Adjustment....................................................... 97
Cleaning......................................................... 235
Correct driving posture .............................23 Driving position memory ........................ 100
Head restraints............................................. 103
Memory recall function............................ 102
Power easy access system .................... 100
Seat heaters .................................................... 212
Seat position memory ..............................100
Seat ventilators .............................................. 212
Front side marker light Light switch .................................................... 136
Front turn signal lights Replacing light bulbs ................................270
Turn signal lever .......................................... 133
Wattage ..........................................................326
Fuel Capacity .......................................................... 318
Fuel gauge ........................................................ 66
Fuel pump shut off system...................... 281
Information .................................................... 327
Refueling.......................................................... 148
Type ................................................................... 318
Warning light .............................................. 286
Fuel consumption Average fuel economy .............................. 72
Current fuel consumption ........................ 72
Fuel filler door If the fuel filler door cannot be opened ....
303
Refueling.......................................................... 148
Fuel gauge ......................................................... 66
Fuel pump shut off system..........................281
Fuses ..................................................................267
G
Garage door opener ................................. 222
Gauges ............................................................... 66
Gear Position ................................................... 75
G-force................................................................74
Glove box ......................................................... 217
Glove box light ...............................................218

3771-1. What to do if... (Troubleshooting)
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810377Alphabetical Index
H
Head restraints .............................................. 103
Headlight aim ................................................ 269
Headlights Automatic High Beam system............. 138
Light switch .....................................................136
Replacing light bulbs................................ 270
Wattage.......................................................... 326
Heated steering wheel ................................ 212
Heaters Automatic air conditioning system ...205
Heated steering wheel.............................. 212
Outside rear view mirrors ....................209
Seat heaters .................................................... 212
High mounted stoplight Replacing light bulbs................................ 270
Hill-start assist control .................................192
Hood Open ............................................................... 245
Hooks Cargo hooks.................................................. 219
Coat hooks ................................................... 220
Retaining hooks (floor mat)......................22
Horn ....................................................................107
I
I/M test ............................................................ 242
Identification Engine ............................................................... 317
Vehicle ..............................................................316
Ignition switch (engine switch).................125 Auto power off function ........................... 127
Changing the engine switch modes.. 126
If your vehicle has to be stopped in an
emergency ................................................ 274
Illuminated entry system ............................. 216
Indicators ........................................................... 64
Initialization Items to initialize ......................................... 349
Maintenance ................................... 238, 250
Power windows............................................. 110 Tire pressure warning system ............ 260
Inside rear view mirror ................................107
Instrument panel light co ntrol ..................... 71
Intercooler...................................................... 252
Intercooler coolant Capacity .......................................................... 319
Checking ...................................................... 250
Interior lights....................................................215 Front interior light ....................................... 215
Rear interior light......................................... 215
Intuitive parking assist Warning message ...................................... 178
J
JackPositioning a floor jack ............................245
Vehicle-equipped jack ........................... 294
Jack handle .................................................... 294
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 ...................................................... 304
If you lose your keys ................................ 303
Key number plate ......................................... 82
Keyless entry ..........................................86, 93
Mechanical key .............................................. 82
Replacing the battery ...............................265
Warning buzzer ............................................ 93
Wireless remote control ...........................84
Knee airbags .................................................... 28

3791-1. What to do if... (Troubleshooting)
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810379Alphabetical Index
Multi-information display .............................. 71 Audio system-linked display................... 75
Boost gauge.....................................................74
Drive information ...........................................72
Drive information 1/Drive information 2/Drive information 3..............................72
Driving assist system information display 76
Dynamic radar cruise control .............. 168
Eco Driving Indicator ..................................73
Engine oil pressure gauge ........................74
Engine oil temperature gauge ................74
Gear Position ................................................. 75
G-force...............................................................74
LDA (Lane Departure Alert with steering control) ..........................................................163
Menu icons .......................................................72
Meter control switches ...............................72
Navigation system-linked display ........ 75
Settings .............................................................. 76
Tire pressure ....................................... 75, 258
Units .................................................................... 75
Vehicle sway warning ................................ 75
Warning message display ....................... 76
Warning messages ..................................290
N
Navigation system-linked display.............75
Noise from under vehicle .............................. 5
O
“ODO TRIP” switch ...................................... 70
Odometer ......................................................... 70
Odometer and trip meter display “ODO TRIP” switch .................................... 70
Oil Engine oil ........................................................ 318
Front differential oil ..................................... 321
Rear differential oil ...................................... 321
Opener Fuel filler door............................................... 148 Hood ................................................................245
Trunk ...................................................................90
Outer foot lights Location ........................................................... 215
Outside rear view mirrors Adjustment ..................................................... 108
Folding.............................................................. 109
Linked mirror function when reversing ....
109
Mirror position memory ..........................100
Outside rear view mirror defoggers209
Outside temperature.................................... 66
Overheating .................................................. 309
P
Paddle shift switches ........................... 130, 131
Panic mode ....................................................... 84
Parking brake Operation ........................................................134
Parking brake engaged warning buzzer134
Warning light ...............................................284
Warning message .......................................134
Parking lights Light switch .................................................... 136
Replacing light bulbs ................................270
PCS (Pre-Collision System) Function ........................................................... 154
PCS OFF switch ......................................... 156
Warning light .............................................. 285
Warning message ..........................160, 290
Personal lights.................................................215
Power control unit coolant Preparing and checking before winter.....196
Power easy access system ....................... 100
Power outlet .................................................. 220
Power steering (Elect ric power steering
system) ............................................................192 Warning light ...............................................284
Power windows Door lock linked window operation ..... 111

382Alphabetical Index
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
Snow mode switch .................................... 130
“SOS” button .................................................. 53
Tilt and telescopic steering control switch 106
Tire pressure warning reset switch ..260
Trunk opener main switch ....................... 92
Trunk opener switch ................................... 90
VSC OFF switch .........................................193
Window lock switch ..................................... 111
Windshield wiper and washer switch .141
Windshield wiper de-icer switch ......209
T
Tachometer....................................................... 66 Rev indicator ................................................... 69
Rev peak ........................................................... 69
Tail lights Light switch .....................................................136
Replacing light bulbs................................ 270
Wattage.......................................................... 326
Theft deterrent system Alarm ..................................................................58
Engine immobilizer system ..................... 57
Theft prevention labels............................... 59
Tire inflation pressure Maintenance data...................................... 322
Tire inflation pressure display function .....
258
Warning light ............................................... 287
Tire information ............................................ 329 Glossary......................................................... 333
Size......................................................................331
Tire identification number .....................330
Uniform Tire Quality Grading............ 332
Tire infration pressure ...................................75
Tire pressure display .................................. 258
Tire pressure warning system Function ..........................................................258
Initializing .......................................................260
Installing tire pressure warning valves and transmitters ...................................... 259
Registering ID codes ................................. 261 Warning light ...............................................287
Tires Chains ...............................................................197
Checking .......................................................255
If you have a flat tire .................................. 294
Inflation pressure ..........................................261
Information ....................................................329
Replacing ....................................................... 294
Rotating tires ................................................ 257
Size .................................................................... 322
Snow tires ....................................................... 196
Spare tire ........................................................ 294
Tire inflation pressure display function......258
Tire pressure warning system ............ 258
Warning light ...............................................287
Tools.................................................................. 294
Top tether strap............................................... 50
Total load capacity ........................................316
Towing Dinghy towing ...............................................124
Emergency towing.................................... 277
Towing eyelet............................................... 279
Trailer towing .................................................124
TRAC (Traction Control) ..........................192
Traction Control (TRAC) ..........................192
Trailer towing .................................................. 124
Transmission Automatic transmission ........................... 128
Driving mode select switch ................... 190
M mode ............................................................. 131
Paddle shift switches ........................ 130, 131
Snow mode.................................................... 130
Trip meters ........................................................ 70
Trunk .................................................................... 89 Smart access system with push-button start ...................................................................90
Trunk features ................................................219
Trunk grip ...........................................................91
Trunk light ...........................................................91
Trunk opener main switch........................ 92
Trunk opener switch ...................................90