2018 LEXUS RC350 radio

8
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Please note that this manual applies to all
models and explains all equipment, including
options. Therefore, you may find some expl anations for equipment not installed on your
vehicle.
All specifications provided in this manual are current at the time of printing. However,
because of the Lexus policy of continual pr oduct improvement, we reserve the right to
make changes at any time without notice.
Depending on specifications, th e vehicle shown in the illustrations may differ from your
vehicle in terms of color and equipment.
Approximately five hours after the engine is turned off, you may hear sound coming from
under the vehicle for several minutes. This is the sound of a fuel evaporation leakage
check and, it does not indicate a malfunction.
A wide variety of non-genuine spare parts and accessories for Lexus vehicles are cur-
rently available in the market. You should kn ow that Toyota does not warrant these prod-
ucts and is not responsible fo r their performance, repair, or replacement, or for any
damage they may cause to, or adverse effect they may have on, your Lexus vehicle.
This vehicle should not be modified with non-genuine Lexus products. Modification with
non-genuine Lexus products could affect its performance, safety or durability, and may
even violate governmental regulations. In addition, damage or performance problems
resulting from the modification may not be covered under warranty.
The installation of a mobile two-way radio system in your vehicle could affect electronic
systems such as:
●Multiport fuel injection system/seque ntial multiport fuel injection system
●Lexus Safety System+
●Anti-lock brake system
●Vehicle dynamics integrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer for precautionary measures or special instruc-
tions regarding installation of a mobile two-way radio system.
For your information
Main Owner’s Manual
Noise from under vehicle after turning off the engine
Accessories, spare parts and modification of your Lexus
Installation of a mobile two-way radio system

461-1. For safe use
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may be sustained from SRS airbags, due to the
extremely high speed deployment (inflation) by hot gases.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel hub, airbag cover and inflator) as well as the
front seats, parts of the front and rear pillars, and roof side rails may be hot for several
minutes. The airbag itself may also be hot.
●The windshield may crack.
●For Lexus Enform Safety Connect subscribers, if the SRS airbags deploy or in the event
of a severe rear-end collision, the system is designed to send an emergency call to the
response center, notifying them of the vehicle’s location (without needing to push the
“SOS” button) and an agent will attempt to speak with the occupants to ascertain the
level of emergency and assistance required . If the occupants are unable to communi-
cate, the agent automatically treats the call as an emergency and helps to dispatch the
necessary emergency services. ( P. 370)
WARNING
■Modification and disposal of SRS airbag system components
Do not dispose of your vehicle or perform any of the following modifications without
consulting your Lexus dealer. The SRS airb ags may malfunction or deploy (inflate)
accidentally, causing death or serious injury.
●Installation, removal, disassembly and repair of the SRS airbags
●Repairs, modifications, removal or replacement of the steering wheel, instrument
panel, dashboard, seats or seat upholstery, front, side and rear pilla rs or roof side rails
●Repairs or modifications of the front fender, front bumper, or side of the occupant
compartment
●Installation of a grille guard (bull bars, ka ngaroo bar, etc.), snow plows, winches or
roof luggage carrier
●Modifications to the vehicle’s suspension system
●Installation of electronic devices such as mobile two-way radios and CD players
●Modifications to your vehicle for a person with a physical disability

1162. Instrument cluster
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■Eco Driving Indicator
Eco Driving Indicator will not operate under the following conditions:
●The shift lever is in any position other than D.
●A paddle shift switch is operated.
●Neither normal mode nor Eco drive mode is selected. ( P. 301)
●The vehicle speed is approximately 80 mph (130 km/h) or higher.
■Background color of the indicator/shift posi tion display area (except F SPORT models)
The background color of the indicator/shift position display area is changed according to
the driving mode as follows ( P. 301):
●Eco drive mode: Blue
●Sport mode: Red
■G-force display (if equipped)
The G-force values may not be zero even when the vehicle is parked, such as when it is
parked on an incline.
■Suspension of the settings display
●Some settings cannot be changed while driv ing. When changing settings, park the
vehicle in a safe place.
●If a warning message is displa yed, operation of the settings display will be suspended.
■Tire pressure
●It may take a few minutes to display the tire inflation pressure after the engine switch is
turned to IGNITION ON mode. It may also take a few minutes to display the tire infla-
tion pressure after inflation pressure has been adjusted.
●“---” may be displayed if the tire position information cannot be determined due to
unfavorable radio wave conditions.
●Tire inflation pressure changes with temperat ure. The displayed values may also be dif-
ferent from the values measured using a tire pressure gauge. Eco Driving Indicator Light
During Eco-friendly acceleration (Eco driv-
ing), the Eco Driving Indicator Light will turn
on. When the acceleration exceeds the Zone
of Eco driving, or when the vehicle is stopped,
the light turns off.
Eco Driving Indicator Zone Display
Suggests the Zone of Eco driving with current
Eco driving ratio based on acceleration.
Eco driving ratio based on acceleration
If the acceleration exceeds the Zone of Eco
driving, the right side of the Eco Driving Indi-
cator Zone Display will illuminate.
Zone of Eco driving
1
2
3
4

1332. Instrument cluster
2
Instrument cluster
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
■G-force display
●The G-force values may not be zero even when the vehicle is parked, such as when it is
parked on an incline.
●The steering amount, accelerator pedal input, and brake fluid pressure displays are dis-
abled until the engine has warmed up (the variable red zone of the tachometer has
retracted to 7300 rpm).
After the engine has warmed up, these displays will be enabled.
●Depending on the vehicle usage conditions, the brake fluid pressure display may not
reach its maximum reading even though the brake pedal is fully depressed.
●If a battery terminal is disconnected and reconnected, the steering amount display may
be disabled temporarily. Afte r driving the vehicle for a while , the display will be enabled.
■Suspension of the settings display
In the following situations, op eration of the settings display will be temporarily sus-
pended.
●When a warning message appears on the multi-information display
●When the vehicle begins to move
■Tire pressure
●It may take a few minutes to display the tire inflation pressure after the engine switch is
turned to IGNITION ON mode. It may also take a few minutes to display the tire infla-
tion pressure after inflation pressure has been adjusted.
●“---” may be displayed if the tire position information cannot be determined due to
unfavorable radio wave conditions.
●Tire inflation pressure changes with temperat ure. The displayed values may also be dif-
ferent from the values measured using a tire pressure gauge.
■When disconnecting and reconnecting battery terminals
The following information data will be reset:
●Drive information
●Lap timer: Measured lap times, history
●G-force: Record of the maximum G-forces
■Using the lap timer
If the engine is stopped while a lap is being timed, the lap timer will stop and the lap time
up to that point will be recorded.
■Liquid crystal display
Small spots or light spots may appear on the display. This phenomenon is characteristic
of liquid crystal displays, and there is no problem continuing to use the display.

1423-1. Key information
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■Card key (if equipped)
●The card key is not waterproof.
●The mechanical key that is stored inside the card key should be used only if a problem
arises, such as when the card key does not operate properly.
●If it is difficult to take out the mechanical key, push down the lock release button using a
pen tip etc. If it is still difficult to pull it out, use a coin etc.
■When required to leave the vehicle’s key with a parking attendant
Set the luggage security system ( P. 152) on and lock the glove box ( P. 351) as cir-
cumstances demand.
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
New genuine mechanical keys can be made by your Lexus dealer using another
mechanical key and the key number stamped on your key number plate. Keep the plate
in a safe place such as your wallet, not in the vehicle.
■When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any but-
tons on the electronic key while inside the aircraft cabin. If you are carrying an electronic
key in your bag etc., ensure that the buttons are not likely to be pressed accidentally.
Pressing a button may cause the electronic key to emit radio waves that could interfere
with the operation of the aircraft.
●To store the mechanical key in the card key,
insert it while pressing the lock release button.
●If the battery cover is not installed and the bat-
tery falls out or if the battery was removed
because the key got wet, reinstall the battery
with the positive terminal facing the Lexus
emblem.

1443-1. Key information
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
NOTICE
■To prevent key damage
●Do not drop the keys, subject them to strong shocks or bend them.
●Do not expose the keys to high temp eratures for long periods of time.
●Do not get the keys wet or wash them in an ultrasonic washer etc.
●Do not attach metallic or magnetic materials to the keys or place the keys close to
such materials.
●Do not disassemble the keys.
●Do not attach a sticker or anything else to the surface of the electronic key.
●Do not place the keys near objects that pr oduce magnetic fields, such as TVs, audio
systems and induction cookers.
■Carrying the electronic key on your person
Carry the electronic key 3.9 in. (10 cm) or mo re away from electric appliances that are
turned on. Radio waves emitted from electric appliances within 3.9 in. (10 cm) of the
electronic key may interfere with the key, causing the key to not function properly.
■In case of a smart access system with push-button start malfunction or other key-
related problems
Take your vehicle with all the electronic keys provided with your vehicle, including the
card key, to your Lexus dealer.
■When an electronic key is lost
If the electronic key remains lost, the risk of vehicle th eft increases significantly. Visit
your Lexus dealer immediately with all rema ining electronic keys and the card key that
were provided with your vehicle.
■Handling the card key (if equipped)
●Do not apply excess force when inserting th e mechanical key into the card key. Doing
so may damage the card key.
●If the battery or card key terminals get wet, the battery may corrode.
If the key is dropped into water, or if drin king water etc. is spilled on the key, immedi-
ately remove the battery cover and wipe th e battery and terminals. (To remove the
battery cover, lightly grasp and pull it.) If the battery is corroded, have your Lexus
dealer replace the battery.
●Do not crush the battery cover or use a screwdriver to remove the battery cover.
Forcibly removing the battery cover may bend or damage the key.
●If the battery cover is frequently removed, the battery cover may become loose.
●When installing the battery, make sure to check the direction of the battery.
Installing the battery in the wrong directio n may cause the battery to deplete rapidly.
●The surface of the card key may be damaged, or its coating may peel off in the follow-
ing situations:
• The card key is carried together with hard objects, such as coins and keys.
• The card key is scraped with a sharp object, such as the tip of a mechanical pencil.
• The surface of the card key is wiped with thinner or benzene.

1533-2. Opening, closing and locking the doors and trunk
3
Operation of each component
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
■Trunk light
●The trunk light turns on when the trunk is opened.
●If the trunk light is left on when the engine sw itch is turned off, the light will go off auto-
matically after 20 minutes.
■Function to prevent the trunk being lo cked with the electronic key inside
●When both side doors are locked, closing the trunk lid with the electronic key left inside
the trunk will sound an alarm.
In this case, the trunk lid can be opened by pressing the trunk release button on the
trunk lid.
●If the spare electronic key is put in the trunk with both side doors locked, the key con-
finement prevention function is activated so the trunk can be opened. In order to pre-
vent theft, take all el ectronic keys with you when leaving the vehicle.
●If the electronic key is put in the trunk with both side doors locked, the key may not be
detected depending on the location of the key and the surrounding radio wave condi-
tions. In this case, the key confinement prevention function cannot be activated, causing
the doors to lock when the trunk is closed. Make sure to check where the key is before
closing the trunk.
●The key confinement prevention function cannot be activated if either door is unlocked.
In this case, open the trunk using the trunk opener.
■Internal trunk release lever
■Using the mechanical key
The trunk can be also opened using the mechanical key. ( P. 519)
■If the smart access system with push-button start or the wireless remote control does
not operate properly
Use the mechanical key to unlock the trunk. ( P. 519)
Replace the key battery with a new one if it is depleted. ( P. 427)
■When leaving a key to the vehicle with a parking attendant
P. 142
■Customization
The trunk unlocking operation can be changed. (Customizable features:  P. 569)
The trunk lid can be open
ed by pulling the glow-
in-the-dark lever located on the inside of the
trunk lid upward.
The lever will continue to glow for some time
after the trunk lid is closed.

1583-2. Opening, closing and locking the doors and trunk
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping the elec-
tronic key from receiving radio waves.
■Conditions affecting operation
The smart access system with push-button st art uses weak radio waves. In the following
situations, the communication between the electronic key and the vehicle may be
affected, preventing the smar t access system with push-but ton start, wireless remote
control and engine immobilizer system from operating properly.
(Ways of coping: P. 518)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas st ation, radio station, large display, airport or
other facility that generates strong radio wave s or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wireless com-
munication device
●When the electronic key is in contact wi th, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying the electronic key together with the following devices that emit radio
waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
Press twice while pressing and holding
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the smart
access system with push -button start cannot be
used. To cancel the function, press any of the
electronic key buttons.