Page 595 of 684

5958-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
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 vehicle inspected at your Lexus dealer as soon
as possible.
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components 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 discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. 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 battery
●Make sure that the key is not inside the vehicle when recharging or replacing the bat-
tery. The key may be locked in the vehicle if the alarm is activated. ( P. 7 9 )
●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 discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery.
7
Page 611 of 684
6119-1. Specifications
9
Vehicle specifications
RC350/RCF_U (OM24636U)
*: The fluid capacity is a reference quantity.If replacement is necessary, contact your Lexus dealer.
Automatic transmission
Fluid capacity*
RC350 (2WD)10.0 qt. (9.5 L, 8.4 Imp. qt.)
RC350 (AWD)10.6 qt. (10.0 L, 8.8 Imp. qt.)
RC F11.8 qt. (11.2 L, 9.9 Imp. qt.)
Fluid typeTo y o t a G e n u i n e AT F W S
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Front differential (AWD models)
Oil capacity 0.74 qt. (0.70 L, 0.61 Imp. qt.)
Oil type and viscosity
Hypoid gear oil API GL-5
Above 0F (-18 C): SAE90
Below 0 F (-18 C): SAE80W or SAE80W-90
Page 639 of 684

6399-2. Customization
9
Vehicle specifications
RC350/RCF_U (OM24636U)
■Door lock (P. 135, 141, 590)
■Smart access system with push-button start and wireless remote control
( P. 135, 141)
FunctionDefault settingCustomized setting
Unlocking using a mechani-
cal key
Driver’s door
unlocked in one
step, both side
doors unlocked in two stepsBoth side doors
unlocked in one step
——O
Automatic door lockShifting the shift
lever to position
other than P
Off
O—OVehicle speed is
approximately 12
mph (20 km/h) or higher
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
123
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
controlOnOff——O
123
Page 640 of 684

6409-2. Customization
RC350/RCF_U (OM24636U)
■Smart access system with push-button start ( P. 135, 141, 146)
■Wireless remote control ( P. 130, 135, 141)
■Driving position memory* ( P. 1 5 7 )
*: If equipped
■Steering wheel ( P. 1 6 4 )
*:If equipped
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
123
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
123
FunctionDefault settingCustomized setting
Selecting the door linking
driving position memory
with door unlock operation
Driver’s doorBoth side doors——O
123
FunctionDefault settingCustomized setting
Auto tilt away function*OnOff——O
123
Page 644 of 684

6449-2. Customization
RC350/RCF_U (OM24636U)
■Illumination ( P. 4 2 8 )
*:If equipped
■Seat belt reminder ( P. 5 3 4 )
FunctionDefault settingCustomized setting
Time elapsed before the
interior lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
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
Ambient lights and Remote
Touch pad light
*OnOff——O
Time elapsed before the
outer foot lights turn off15 seconds
Off
O—O7. 5 s e c o n d s
30 seconds
Operation of the outer foot
lights when you approach
the vehicle with the elec-
tronic 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
123
FunctionDefault settingCustomized setting
Vehicle speed linked seat
belt reminder buzzerOnOff——O
123
Page 645 of 684

6459-2. Customization
9
Vehicle specifications
RC350/RCF_U (OM24636U)
■Vehicle customization
●When the smart access system with push-button start is off, the entry unlock function
cannot be customized.
●When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational si gnal (Emergency flashers) function set-
tings.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch, the changed setting will not be reflected on the audio system
screen until the engine switch is turn ed off and then to IGNITION ON mode.
■When customizing using the Remote Touch or Lexus Display Audio controller
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also,
to prevent battery discharge, leave the engi ne running while customizing the features.
WA R N I N G
■During customization
As the engine needs to be running during customization, ensure that the vehicle is
parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This
may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that the engine is running while customizing fea-
tures.
Page 660 of 684

660
RC350/RCF_U (OM24636U)What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne
w genuine mechanical keys can be made
by your Lexus dealer. ( P. 1 3 2 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 3 4 )
●Is the electronic key battery weak or depleted? ( P. 5 0 7 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 9 4 )
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 1 4 8 )
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 4 3 )
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 doors cannot be locked or unlocked
The trunk lid is closed with the electronic key left inside
Page 661 of 684

661What to do if... (Troubleshooting)
RC350/RCF_U (OM24636U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 9 3 )
●Is the shift lever in P? ( P. 1 9 6 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 4 6 )
●Is the steering wheel unlocked? ( P. 1 9 6 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 5 9 2 )
●Is the battery discharged? ( P. 5 9 3 )
●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. 5 8 9 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 9 6 )
●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. 171)
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 1 9 6 )
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
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