2022 LEXUS RC350 ignition

3308-1. Specifications
RC350/RC300 Owner's Manual
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
■Spark plug
Cooling system
Capacity*
RC350/RC3
00 AWD10.0 qt. (9.5 L, 8.4 Imp. qt.)
RC300
Gasoline engine
8.5 qt. (8.0 L, 7.0 Imp. qt.)
Intercooler
3.3 qt. (3.1 L, 2.7 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene glycol-based non-silicate,
non-amine, non-nitrite, and non-borate coolant with
long-life hybrid orga nic acid technology
Do not use plain water alone.
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.

3578-2. Customization
RC350/RC300 Owner's Manual
8
Vehicle specifications
■Seat belt reminder (P.297)
■Vehicle customization
●When the smart access system with
push-button start is off, the entry unlock
function cannot be customized.
●When the doors rema in 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 Di splay. If a setting is
changed using a switch, the changed set-
ting will not be reflected on the Center
Display screen until th e engine switch is
turned off and then to IGNITION ON
mode.
FunctionDefault settingCustomized setting
Vehicle speed linked seat belt
reminder buzzerOnOff——O
ABC

370What to do if... (Troubleshooting)
RC350/RC300 Owner's Manual
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.314)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.314)
 Is the electronic key battery weak or
depleted? ( P.275)
 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 door s, 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.316)
 Is the battery discharged? ( P.317)
 Is the engine switch in IGNITION
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

371What to do if... (Troubleshooting)
RC350/RC300 Owner's Manual
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.297)
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.293, 301)
 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.301)
When a warning light turns on or a
warning message is displayed, refer
to P.293, 301.
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

387Alphabetical Index
RC350/RC300 Owner's Manual
If the engine will not start ......................... 312
If your vehicle has to be stopped in an
emergency ................................................ 284
Ignition switch (engine switch) .............125
Overheating................................................. 320
Tachometer ..................................................... 66
Engine coolant Capacity .........................................................330
Checking .......................................................258
Preparing and checking before winter......................................................................... 203
Engine coolant temperature gauge ....... 66
Engine immobilizer system ........................ 56
Engine oil Capacity ......................................................... 328
Checking ....................................................... 256
Preparing and checking before winter......................................................................... 203
Warning light ............................................... 294
Engine oil maintenance data .................. 258
Engine oil pressure gauge ...........................74
Engine oil temperature gauge ...................74
Engine switch ..................................................125 Auto power off function ...........................128
Changing the engine switch modes.. 127
If your vehicle has to be stopped in an
emergency ................................................ 284
EPS (Electric Power Steering) ................199 Warning light ............................................... 295
Event data recorder (EDR) ............................7
F
First-aid kit storage belt .............................227
Flat tire Tire pressure warning system ............. 266
Vehicles with a spare tire ..................... 305
Floor mats ...........................................................22
Fluid Automatic transmission ............................331
Brake.................................................... 260, 332
Washer ........................................................... 262
Footwell light ................................................. 223 Front passenger occupant classification
system .............................................................. 36
Front position lights Wattage ..........................................................336
Front seats Adjustment ....................................................... 97
Cleaning ......................................................... 243
Correct driving posture ............................ 23
Driving position memory ........................ 100
Head restraints............................................. 103
Memory recall function............................ 102
Power easy access system .................... 100
Seat heaters .................................................... 221
Seat position memory .............................. 100
Seat ventilators .............................................. 221
Front side marker light Light switch .................................................... 140
Front turn signal lights Replacing light bulbs............................... 280
Turn signal lever ...........................................134
Wattage ..........................................................336
Fuel Capacity .........................................................328
Fuel gauge........................................................ 66
Fuel pump shut off system..................... 292
Information .................................................... 337
Refueling.......................................................... 153
Type ..................................................................328
Warning light ............................................... 297
Fuel consumption Average fuel economy .............................. 73
Current fuel consumption ........................ 73
Fuel filler door If the fuel filler do or cannot be opened
............................................................................314
Refueling.......................................................... 153
Fuel gauge ......................................................... 66
Fuel pump shut off system........................ 292
Fuses ..................................................................276
G
Garage door opener ................................. 230

388Alphabetical Index
RC350/RC300 Owner's Manual
Gauges ............................................................... 66
Gear Position....................................................75
G-force................................................................74
Glove box ....................................................... 225
Glove box light ............................................. 226
H
Head restraints .............................................. 103
Headlight aim ................................................ 278
HeadlightsAutomatic High Beam system.............. 142
Light switch .................................................... 140
Replacing light bulbs................................280
Wattage.......................................................... 336
Heated steering wheel ................................ 221
Heaters Automatic air conditioning system ..... 213
Heated steering wheel.............................. 221
Outside rear view mirrors ...................... 217
Seat heaters .................................................... 221
High mounted stoplight Replacing light bulbs................................280
Hill-start assist control .................................199
Hood Open ............................................................... 253
Hooks Cargo hooks.................................................227
Coat hooks ................................................... 228
Retaining hooks (floor mat)......................22
Horn ....................................................................107
I
I/M test ............................................................ 250
Identification Engine ............................................................. 327
Vehicle ............................................................ 326
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 ................................................ 284 Illuminated entry system ........................... 224
Indicators ........................................................... 64
Initialization
Items to initialize ........................................ 358
Maintenance.................................... 246, 258
Power windows ............................................. 110
Tire pressure warning system ............. 267
Inside rear view mirror ................................107
Instrument panel light control ................... 70
Intercooler...................................................... 260
Intercooler coolant Capacity ........................................................ 330
Checking ...................................................... 258
Interior lights.................................................. 223 Front interior light ...................................... 223
Rear interior light........................................ 223
Intuitive parking assist Warning message ...................................... 185
J
JackPositioning a floor jack ............................253
Vehicle-equipped jack .......................... 305
Jack handle .................................................... 305
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 ........................................................ 315
If you lose your keys ...................................314
Key number plate ......................................... 82

392Alphabetical Index
RC350/RC300 Owner's Manual
Seat heaters .................................................... 221
Seat position memory .............................. 100
Seat ventilators.............................................. 221
Seats, Front Child seats/child restraint system installa-tion .................................................................... 40
Sensor Automatic headlight system.................. 140
Automatic High Beam system.............. 142
Inside rear view mirror............................. 108
LDA (Lane Departure Alert with steering control) .......................................................... 167
Radar sensor................................................. 156
Rain-sensing windshield wipers............ 151
Service reminder message ..................... 246
Shift lever Automatic transmission ............................ 129
Side airbags ...................................................... 28
Side marker lights Light switch .................................................... 140
Replacing light bulbs................................280
Side mirrors Adjustment..................................................... 108
BSM (Blind Spot Monitor) .................... 189
Folding ............................................................. 109
Linked mirror function when reversing.......................................................................... 109
Mirror position memory.......................... 100
RCTA function ............................................. 189
Side turn signal lights Replacing light bulbs................................280
Turn signal lever ...........................................134
Wattage.......................................................... 336
Side windows ................................................... 110
Smart access system with push-button start Antenna location........................................... 93
Entry functions................................................ 86
Starting the engine ......................................125
Warning message...................................... 301
Snow mode ....................................................... 131
Snow tires ....................................................... 203 Spare tire.........................................................305
Storage location ........................................ 305
Spark plug ...................................................... 330
Specifications ................................................ 326
Speedometer ................................................... 66
Steering lock Column lock release ................................. 125
Steering lock system warning message........................................................................... 125
Steering wheel Adjustment ..................................................... 106
Heated steering wheel .............................. 221
Meter control switches .............................. 72
Power easy access system .................... 100
Steering wheel position memory........ 100
Stop lights Replacing light bulbs............................... 280
Wattage ..........................................................336
Storage features .......................................... 225
Stuck If the vehicle becomes stuck ................ 324
Sun visors ........................................................ 229
Sunshade Roof...................................................................... 113
Switch ASC (Active Sound Control) dial...... 139
Meter control switches .............................. 72
Switches Activating the Automatic High Beam142
Automatic High Beam system ..............142
Brake Hold switch.......................................137
Door lock switches ..................................... 88
Driving mode select switch ................... 196
Driving position memory switches .... 100
Emergency flashers switch ...................284
Engine switch ................................................ 125
Garage door opener switches...........230
Heated steering wheel switch ............... 221
Ignition switch ............................................... 125
Instrument panel light control switches............................................................................. 70
Light switches ............................................... 140