check engine LEXUS RC350 2015 Owners Manual

TABLE OF CONTENTS6
RC350/RCF_U (OM24636U)
6-4. Using the other interior features
Other interior features ............ 435 • Sun visors ................................ 435
• Vanity mirrors ........................ 435
• Clock ........................................ 436
• Power outlet ........................... 436
• Armrest.....................................437
•Trunk storage extension ................................. 438
• Assist grips ............................. 439
• Coat hooks ............................. 439
Garage door opener ............... 440
Compass ........................................447
LEXUS Enform Safety Connect........................................ 451
7-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 458
Cleaning and protecting the vehicle inte rior.................. 463
7-2. Maintenance Maintenance requirements ............................ 466
General maintenance.............. 469
Emission inspection and maintenance (I/M)
programs ..................................... 472 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions.................................473
Hood ................................................475
Positioning a floor jack.............. 476
Engine compartment ................479
Tires....................................................491
Tire inflation pressure ...............500
Wheels ........................................... 503
Air conditio ning filter ...............505
Electronic key battery.............. 507
Checking and replacing fuses.............................................. 509
Light bulbs ......................................512
8-1. Essential information Emergency flashers .................. 522
If your vehicle has to be stopped in an
emergency ................................ 523
7Maintenance and care
8When trouble arises

8
RC350/RCF_U (OM24636U)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, the vehicle show n 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 know that Toyota does not warrant these prod-
ucts and is not responsible for 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 sy stem in your vehicle could affect electronic
systems such as:
●Multiport fuel injection system/sequential multiport fuel injection system
●Dynamic radar cruise control system
●Cruise control system
●Anti-lock brake system
●Vehicle dynamics in tegrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer fo r precautionary measures or special instruc-
tions regarding insta llation 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

15Pictorial index
RC350/RCF_U (OM24636U)
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 135
Locking/unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 135
Opening/closing the side window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 171
Locking/unlocking by using the mechanical key. . . . . . . . . . . . . . . . . . . . . . . . P. 590
Warning lights/warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 534, 541
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 217
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 315
To prevent freezing (windshield wiper de-icer)* . . . . . . . . . . . . . . . . . . . . . . . . P. 421
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 460
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 225
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 225
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 607
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 491
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 614
Winter tires/tire chain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 315
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . . P. 491
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 560, 574
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 475
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 475
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 607
Coping with overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 597
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 5 41
Headlights/parking lights/daytime running lights/
turn signal lights /side marker lights. . . . . . . . . . . . . . . . . . . . . . . . . . .P. 204, 208
Front fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 216
1
2
3
4
5
Light bulbs of the exterior lights for driving
(Replacing method: P. 512, Watts: P. 619)
*: If equipped
6
7

311-1. For safe use
1
For safety and security
RC350/RCF_U (OM24636U)
WA R N I N G
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering with the ped-
als while driving. An unexpectedly high spee d may result or it may become difficult to
stop the vehicle. This could lead to an ac cident, resulting in death or serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year vehicles,
even if they are Lexus Genuine floor mats.
●Only use floor mats designed for the driver’s seat.
●Always install the floor mat securely using the retaining hooks (clips) provided.
●Do not use two or more floor mats on top of each other.
●Do not place the floor mat bottom-side up or upside-down.
■Before driving
●Check that the floor mat is securely fixed in
the correct place with all the provided retain-
ing hooks (clips). Be especially careful to per-
form this check after cleaning the floor.
●With the engine stopped and the shift lever in
P, fully depress each pedal to the floor to
make sure it does not interfere with the floor
mat.

751-1. For safe use
1
For safety and security
RC350/RCF_U (OM24636U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
WA R N I N G
Exhaust gases include harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle ev en when the trunk lid is closed, open the
windows and have the vehicle inspected at your Lexus dealer as soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the
engine.
●Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and ensure
that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is snowing.
If snowbanks build up around the vehicle wh ile the engine is running, exhaust gases
may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack caused
by corrosion, damage to a joint or abnormal exhaust noise, be sure to have the vehicle
inspected and repaired by your Lexus dealer.

852. Instrument cluster
2
Instrument cluster
RC350/RCF_U (OM24636U)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode toindicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a malfunction in a system if a light does not
come on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
The indicators inform the driver of the operating state of the vehicle’s various sys-
tems.
Indicators
Turn signal indicator
( P. 2 0 4 )
(if equipped)
LDA (Lane Departure
Alert) indicator ( P. 2 4 8 )
(U.S.A.)
Headlight indicator
( P. 2 0 8 )

(if equipped)
Intuitive parking assist indi-
cator ( P. 2 5 5 )
(Canada)
Tail light indicator
( P. 2 0 8 ) *1, 2 Slip indicator ( P. 2 8 4 )
Headlight high beam indi-
cator ( P. 2 0 9 )
*1VSC OFF indicator
( P. 2 8 5 )
(if equipped)
Automatic High Beam indi-
cator ( P. 211)*1, 8TRAC OFF indicator
( P. 2 8 4 )
(if equipped)
Front fog light indicator
( P. 2 1 6 )*1, 3
(if equipped)
Pre-collision system warn-
ing light
( P. 2 9 1 )
Cruise control indicator
(  P. 2 2 9 , 2 3 3 )
*4, 6
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 2 9 7 )
(if equipped)
Dynamic radar cruise con-
trol indicator ( P. 2 3 3 )*7Security indicator
( P. 76 , 7 8 )
Cruise control “SET” indica-
tor ( P. 229, 233)
*5Low outside temperature
indicator ( P. 9 0 , 9 6 )

872. Instrument cluster
2
Instrument cluster
RC350/RCF_U (OM24636U)
RC F
●TVD (Torque Vectoring Differential) control mode indicators (RC F)
*1: These lights turn on when the engine switch is turned to IGNITION ON mode toindicate that a system check is being perfor med. They will turn off after the engine is
on, or after a few seconds. There may be a malfunction in a system if a light does not
come on, or turn off. Have the vehi cle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turn ed off. The light will flash quickly when the
system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators illuminate in the following situations:
• When the engine switch is turned to IGNITION ON mode while the BSM main
switch is turned on.
• When the BSM main switch is turned on while the engine swit ch is in IGNITION
ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators will
turn off after a few seconds.
If the BSM outside rear view mirror indica tors do not illuminate or do not turn off,
there may be a malfunction in the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
*5: When the outside temperature is approximately 37 F (3 C) or lower, the indicator
will flash for approximately 10 seconds, then stay on.
*6: This light illuminates on the outside rear view mirrors.
*7: This light illuminates on the center panel.
*8:RC F“NORMAL” indicator
(
 P. 2 7 8 ) Eco drive mode indicator
(
 P. 2 7 8 )
“SPORT S” indicator
(  P. 2 7 8 ) “SPORT S+” indicator
(
 P. 2 7 8 )
Snow mode indicator
(  P. 2 0 0 )
(if equipped)
“STANDARD” indicator
( P. 313)
(if equipped)
“SLALOM” indicator
( P. 313)
(if equipped)
“TRACK” indicator
( P. 313)

952. Instrument cluster
2
Instrument cluster
RC350/RCF_U (OM24636U)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator of the tachometer enter the red zone, as it represents the
engine speed range which exceeds the maximum safe engine speed.
●If the engine coolant temperature gauge is in the red zone (H), the engine may be
overheating. In this case, immediately stop the vehicle in a safe place, and check the
engine after it has cooled completely. (P. 5 9 7 )

1022. Instrument cluster
RC350/RCF_U (OM24636U)
■Instrument panel brightness adjustment
The instrument panel brig htness levels when the tail ligh ts are on and off can be adjusted
individually. However, when the surroundings ar e bright (daytime, etc.), turning on the tail
lights will not change the instru ment panel brightness. At this time, any adjustments made
to the instrument panel bright ness levels will be applied to both settings at once.
■Dimming the analog speedometer lighting
The analog speedometer lighting will be dimm ed when the ambient light is bright, such
as during the daytime, and SPORT S or SPORT S+ mode is selected.
■Outside temperature display
●In the following situations, the correct outside temperature may not be displayed, or the
display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has change d suddenly (at the entrance/exit of a
garage, tunnel, etc.)
●When “ ” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Lexus dealer.
■Pop-up display
●In some situations, such as when a switch operation is pe rformed, a pop-up display will
be temporarily displayed on the multi-information display.
●Some pop-up displays can be set on/off. ( P. 1 1 9 )
■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.
■Customization
The meter display can be customized on the multi-information display. (P. 1 1 0 )
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator of the tachometer enter the red zone, as it represents the
engine speed range which exceeds the maximum safe engine speed.
●In the following situations, the engine may be overheating. In this case, immediately
stop the vehicle in a safe place, and check the engine after it has cooled completely.
(  P. 5 9 7 )
• The engine coolant temperature gauge indi cator ( ) is in the red zone and flash-
ing.
• The engine oil temperature gauge indicato r ( ) is in the red zone and flashing.

1433-2. Opening, closing and locking the doors and trunk
3
Operation of each component
RC350/RCF_U (OM24636U)
■Tr u n k l i g h t
●The trunk light turns on when the trunk is opened.
●If the trunk light is left on when the engine switch 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 tr unk 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 electronic 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. 5 9 1 )
■If the smart access system with push-butto n start or the wireless remote control does
not operate properly
Use the mechanical key to unlock the trunk. ( P. 5 9 1 )
Replace the key battery with a new one if it is depleted. ( P. 5 0 7 )
■When leaving a key to the vehi cle with a parking attendant
 P. 1 3 2
■Customization
The trunk unlocking operation can be changed. (Customizable features: P. 6 3 5 )
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.