2018 LEXUS RC300 engine

4737-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises Indicates that the LDA (Lane Departure Alert with steer-
ing control) system cannot be used as the vehicle speed
is approximately 32 mph (50 km/h) or less
 Drive the vehicle at approximately 32 mph (50 km/h)
or more.
Indicates that the engine was stopped while driving
A buzzer also sounds.
 Operate the steering wheel with more force than
usual.
Indicates that the engine switch is turned off or turned to
ACCESSORY mode and the driver’s door is opened
while the lights are turned on
A buzzer also sounds.
 Turn the lights off. (If equipped)
Indicates that the moon roof is not fully closed (with the
engine switch off, and the driver’s door open)
A buzzer also sounds.
 Close the moon roof.
Indicates that the windows are not fully closed (with the
engine switch off, and the driver’s door open)
A buzzer also sounds.
 Close all the windows.Warning message Details/Actions
(Flashes)
(Flashes)
(Flashes)

474 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) (If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the engine switch off, and the driver’s
door open)
A buzzer also sounds.
 Close all the windows and the moon roof. (If equipped)
Indicates a malfunction in the TVD (Torque Vectoring
Differential) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer. (If equipped)
Indicates that the TVD (Torque Vectoring Differential)
system has overheated
This message may be disp layed when driving under
extremely high load conditions such as the following:
• Continuously driving at high speeds or through
sharp turns
• If either right or left rear tire loses traction and spins
continuously
A buzzer also sounds.
 Drive the vehicle for a while, while avoiding
extremely high load conditions.
Indicates a malfunction in th e Drive-Start Control system
A buzzer also sounds.
 Have the vehicle inspecte d by your Lexus dealer
immediately.Warning message Details/Actions(Flashes)

4757-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises Indicates a malfunction in the Brake Override System
A buzzer also sounds.
 Have the vehicle inspecte d by your Lexus dealer
immediately.
Indicates that engine oil level is low
This message may ap pear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to
see if the message disappears.
 Check the level of engine oil, and add if necessary.
RC F
Indicates a malfunction in:
• The automatic headlight leveling system; or
• The Automatic High Beam system; or
• The LED headlight system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.Warning message Details/Actions

478 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) Indicates a malfunction in the tire pressure warning sys-
tem
 Stop the vehicle in a safe place and turn the engine
switch off then on again.
If the tire pressure warn ing indicator flashes for 1
minute then illuminates, ther e is a malfunction in the
system. Have the vehicle inspected at your Lexus
dealer.
Indicates that the tire position information cannot be rec-
ognized
 Drive for a short while an d check if the display
updates.
If the radio wave conditions improve, the display
may return to normal. If th e tire pressure is still not
displayed after driving for several minutes, stop the
vehicle in a safe place, turn the engine switch off
then on again, and start driving.
If the tire pressure is st ill not displayed even after
repeating this process seve ral times, have the vehi-
cle inspected at your Lexus dealer. (If equipped)
Indicates a malfunction in the DRS (Dynamic Rear Steer-
ing)
system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer. (If equipped)
Indicates a malfunction in the active rear wing
 Have the vehicle inspected by your Lexus dealer.
Indicates that the washer fluid level is low
 Add washer fluid.Warning message Details/Actions

4797-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises Indicates that remaining fuel is approximately 2.6 gal.
(10 L, 2.2 Imp. gal.) or less
 Refuel the vehicle.
Indicates that the outside temperature is approximately
37  F (3  C) or lower
A buzzer also sounds.
 Drive carefully, as the road may be icy.
RC350/RC300
Indicates that the TRAC (Traction Control) system has
been deactivated
 Turn the TRAC on. (  P. 314)(If equipped)
Indicates that the engine oil is scheduled to be changed.
(The indicator will not work properly unless the message
has been reset.)
 Check the engine oil, and change if necessary.
After changing the engine oil, the message should
be reset.
Indicates that all maintenance according to the driven
distance on the maintenance schedule
* should be per-
formed soon.
 Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perform maintenance. Please reset
the message after the maintenance is performed.
(  P. 385)Warning message Details/Actions

480 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) (If equipped)
Indicates that the engine oil should be changed. (After
the engine oil is changed and the message has been
reset.)
 Check and change the engine oil, and oil filter by
your Lexus dealer. After chan ging the engine oil, the
message should be reset. (  P. 403)
Indicates that all maintenanc e is required to correspond
to the driven distance on the maintenance schedule
* .
 Comes on approximately 5000 miles (8000 km)
after the message has been reset. (The indicator will
not work properly unless the message has been
reset.)
Perform the necessary maintenance. Please reset
the message after the maintenance is performed.
(  P. 385)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
 Turn the high beam on and press the Automatic
High Beam switch again.
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision braking and pre-
collision brake assist are stopped (The pre-collision
warning function will be operational)
 Turn the VSC on. (  P. 315)
Indicates that the PCS (Pre -Collision System) is tempo-
rarily unavailable
 When conditions improve, the system resumes
operation. If this message is displayed continuously,
have the vehicle inspected by your Lexus dealer.Warning message Details/Actions

4837-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U) 7
When trouble arises Interior
buzzer Exterior
buzzer Warning message Details/Actions
Con-
tinuous  The driver’s door was opened when
the shift lever was not in P and the
engine switch was not turned off.
 Shift the shift lever to P.
Con-
tinuous Con-
tinuous The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
not in P and the engine switch was
not turned off.
 Shift the shift lever to P.
 Bring the electronic key back
into the vehicle.
Once  The electronic key is not detected
when an attempt is made to start the
engine.
 Start the engine with the elec-
tronic key present. (Flashes)
(Displayed alternately)
(Flashes)

484 7-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)Once Con-
tinuous An attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning
the engine switch off when the shift
lever was in P.
 Turn the engine switch off and
lock the doors again.
Once 3 times The electronic key was carried out-
side the vehicle and a door other
than the driver’s door was opened
and closed while the engine switch
was in a mode other than off.
 Bring the electronic key back
into the vehicle.
The driver’s door was opened and
closed while the electronic key was
not in the vehicle, the shift lever was
in P and the engine switch was not
turned off.
 Turn the engine switch off.
 Bring the electronic key back
into the vehicle.
9 times  An attempt was made to drive when
the electronic key was not inside the
vehicle.
 Confirm that the electronic key
is inside the vehicle.Interior
buzzer Exterior
buzzer Warning message Details/Actions (Displayed alternately)
(Flashes)