Page 307 of 390

3057-2. Steps to take in an emergency
RC350AWD_RC350_RC300AWD_RC30
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7
When trouble arises
■Key linked functions
1Locks both side door
2
Closes the windows and moon roof
(if equipped) (turn and hold)
*
3Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key again unlocks
the other door.
4Opens the windows and moon roof
(if equipped) (turn and hold)
*
*: These settings must be customized at
your Lexus dealer.
1Ensure that the shift lever is in P and
depress the brake pedal.
2
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch will
turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in custom-
ization setting, the engine switch will turn
to ACCESSORY mode.
3Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4
Press the engine switch.
In the event that the engine still cannot
be started, contact your Lexus dealer.
WARNING
■When using the mechanical key and
operating the power windows or
moon roof
Operate the power window or moon
roof after checking to make sure that
there is no possibility of any passenger
having any of their body parts caught in
the window or moon roof.
Also, do not allow children to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or moon roof.
Starting the engine
Page 308 of 390

3067-2. Steps to take in an emergency
RC350AWD_RC350_RC300AWD_RC30
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■Stopping the engine
Shift the shift lever to P and press the engine
switch as you normally do when stopping
the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.265)
■Changing engine switch modes
Release the brake pedal and press the
engine switch in step 3 above.
The engine does not start and modes will be
changed each time the switch is pressed.
( P.126)
If you have a set of jumper (or booster)
cables and a second vehicle with a
12-volt battery, you can jump start your
vehicle by following the steps below.
1 Confirm that the electronic key is
being carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.59)
2 Open the hood. ( P.245)
If the vehicle battery is dis-
charged
The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Restarting the engine
Page 310 of 390

3087-2. Steps to take in an emergency
RC350AWD_RC350_RC300AWD_RC30
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5Open and close any of the door of
your vehicle with the engine switch
off.
6
Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to IGNITION ON
mode.
7
Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.
■Starting the engine when the battery is
discharged
The engine cannot be started by push-start-
ing.
■To prevent battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is off.
●Turn off any unnecessary electrical com-
ponents when the vehicle is running at a
low speed for an extended period, such
as in heavy traffic.
■Charging the battery
The electricity stored in the battery will dis-
charge gradually even when the vehicle is
not in use, due to natural discharge and the
draining effects of certain electrical appli-
ances. If the vehicle is left for a long time,
the battery may discharge, and the engine
may be unable to start. (The battery
recharges automatically during driving.)
■When recharging or replacing the bat-
tery
●In some cases, it may not be possible to
unlock the doors using the smart access
system with push-button start when the
battery is discharged. Use the wireless
remote control or the mechanical key to
lock or unlock the doors.
●The engine may not start on the first
attempt after the battery has recharged
but will start normally after the second
attempt. This is not a malfunction.
●The engine switch mode is memorized by
the vehicle. When the battery is recon-
nected, the system will return to the
mode it was in before the battery was dis-
charged. Before disconnecting the bat-
tery, turn the engine switch off.
If you are unsure wh at mode the engine
switch was in before the battery dis-
charged, be especially careful when
reconnecting the battery.
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to
prevent accidentally igniting the flamma-
ble gas that may be emitted from the bat-
tery:
●Make sure each jumper cable is con-
nected to the correct terminal and that
it is not unintentiona lly in contact with
any other than the intended terminal.
●Do not allow the other end of the
jumper cable connected to the “+” ter-
minal to come into contact with any
other parts or metal surfaces in the
area, such as brackets or unpainted
metal.
●Do not allow the + and - clamps of the
jumper cables to come into contact
with each other.
●Do not smoke, use matches, cigarette
lighters or allow open flame near the
battery.
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrol yte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:
Page 322 of 390

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.
Page 343 of 390

3418-2. Customization
RC350AWD_RC350_RC300AWD_RC30
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8
Vehicle specifications
*1: For details about each function: P.76
*2: The default setting varies according to country.
*3:Except F SPORT models
*4: Some status screens cannot be registered (i ndicated on the multi-information display)
*5:F SPORT models
*6: Always observe the legal speed limit when driving on public roads.
*7: On multi-information display
■Door lock (P.86, 89, 304)
Rev indicator*55000 r/min.
Select to set the
desired engine
speed at which the Rev indicator will begin to be dis- played.
—O—
Off
Rev peak*5OnOff—O—
Speed indicator*5OffOn—O—
Speed indicator settings*575 mph (120 km/h)
30 mph to 100 mph (50 km/h to
160km/h)
*6—O—
Eco Driving Indicator LightOnOff—O—
Clock*712-hour display24-hour display—O—
Function*1Default settingCustomized settingABC
FunctionDefault settingCustomized setting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in one
step, both side doors unlocked in two steps
Both side doors
unlocked in one step——O
Automatic door lock
Shifting the shift
lever to position other than P
Off
O—OVehicle speed is
approximately 12
mph (20 km/h) or higher
ABC
Page 344 of 390

3428-2. Customization
RC350AWD_RC350_RC300AWD_RC30
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■Smart access system with push-button start and wireless remote control
( P.86, 89)
■Smart access system with push-button start ( P.86, 89, 93)
Automatic door unlockShifting the shift
lever to POff
O—ODriver’s door is opened
Locking/unlocking of the
trunk when both side doors
are locked/unlocked
OnOff——O
FunctionDefault settingCustomized settingABC
FunctionDefault settingCustomized setting
Operation buzzer volume5OffO—O1 to 7
Operation signal (Emer-
gency flashers)OnOffO—O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being unlocked
60 seconds
Off
O—O30 seconds
120 seconds
Open door warning buzzerOnOff——O
Welcome light illumination
controlOnOffO—O
ABC
FunctionDefault settingCustomized setting
Smart access system with
push-button startOnOff——O
Smart door unlockingDriver’s doorBoth side doorsO—O
Number of consecutive door
lock operations2 timesAs many as desired——O
ABC
Page 345 of 390
3438-2. Customization
RC350AWD_RC350_RC300AWD_RC30
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8
Vehicle specifications
■Wireless remote control ( P.82, 86, 89)
■Driving position memory* ( P.100)
*:If equipped
■Power easy access system ( P.100)
*:If equipped
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Driver’s door
unlocked in one
step, both side doors unlocked in two steps
Both side doors
unlocked in one stepO—O
Trunk unlocking operationPress and hold (short)
One short press
——O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOff——O
ABC
FunctionDefault settingCustomized setting
Selecting the door linking
driving position memory with
door unlock operation
Driver’s doorBoth side doors——O
ABC
FunctionDefault settingCustomized setting
Driver’s seat movement when
exiting the vehicleFullOffO—OPartial
Steering wheel movement*OnOff——O
ABC
Page 349 of 390

3478-2. Customization
RC350AWD_RC350_RC300AWD_RC30
0_OM_(U)_1810
8
Vehicle specifications
■Illumination ( P.215)
■Seat belt reminder ( P.286)
■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