LEXUS RC350 2018 Owners Manual

4617-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Warning message and warning buzzer list
Warning messageDetails/Actions
Indicates that there is a high possibility of a frontal colli-
sion, or that the pre-collision braking function is operat-
ing
A buzzer also sounds.
 Avoid the collision by decelerating using the brakes
or taking other evasive actions.
Indicates that the engine was stopped with the shift lever
not in P
A buzzer also sounds.
 Shift the shift lever to P.
Indicates that the engine was stopped while driving
A buzzer also sounds.
 Stop the vehicle in a safe place such as the shoulder
of a road.
Indicates that your vehicle is nearing the vehicle ahead
(in vehicle-to-vehicle distance control mode)
A buzzer also sounds.
 Slow the vehicle by applying the brakes.
(Flashes)
(Flashes)

4627-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Indicates that the vehicle has deviated from the lane
(while the LDA [Lane Departure Alert with steering con-
trol] system is operating)
The lane line on the side the vehicle has deviated from
flashes in amber.
A buzzer also sounds.
 Check around the vehicle and back to inside of the
lane lines.
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
A buzzer also sounds.
 Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Indicates that one or more of the doors is not fully closed The system also indicates which doors are not fully
closed.
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
 Make sure that both side doors are closed.
Warning messageDetails/Actions
(Flashes)
(U.S.A.) (Canada) (Flashes)

4637-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the hood is not yet fully closed.
 Close the hood.
Indicates that the trunk is not fully closed
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the trunk is not yet fully closed.
 Close the trunk.
(If equipped)
Indicates a malfunction in the intuitive parking assist-sen-
sor The assist-sensors flash.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that an intuitive par king assist sensor is dirty or
covered with ice A buzzer also sounds.
 Clean the sensor.
Warning messageDetails/Actions

4647-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates that the vehicle is being driven at 3 mph (5
km/h) or more with the pa rking brake still engaged.
A buzzer also sounds.
 Release the parking brake.
Warning messageDetails/Actions
(U.S.A.) (Canada) (Flashes)

4657-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accel-
erator pedal A buzzer also sounds.
 Momentarily release the accelerator pedal.
Indicates that the shift lever was used to attempt to shift
to the first gear position in M mode on a slippery road
surface
The gear position will not shift from the second gear.
A buzzer also sounds.
 Drive the vehicle in the second or a higher gear
position.
Indicates that the LDA (Lane Departure Alert with steer-
ing control) system has dete rmined that the driver does
not have the hands on the steering wheel while the steer-
ing control function is on If the driver operates the steering wheel only a small
amount, the system may be unable to detect the steer-
ing wheel operations and this warning may be dis-
played.
 Firmly hold the steering wheel.
Warning messageDetails/Actions
(Flashes)

4667-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Indicates that steering control function is temporarily
canceled due to the LDA (Lane Departure Alert with
steering control) system determining that the driver
does not have the hands on the steering wheel while the
steering control function is on If the driver operates the steering wheel only a small
amount, the system may be unable to detect the steer-
ing wheel operations and this warning may be dis-
played.
 Firmly hold the steering wheel.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates an engine malfunction
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(U.S.A.) (Canada)
(U.S.A.) (Canada)

4677-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The ABS; or
• The brake assist system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
 P. 526
Warning messageDetails/Actions
(U.S.A.) (Canada)

4687-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
Indicates a malfunction in the vehicle’s charging system.
Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Indicates that the radar sensor is dirty or covered with
ice A buzzer also sounds.
 Clean the sensor.
Indicates that the dynamic radar cruise control system
cannot be used temporarily due to bad weather
A buzzer also sounds.
 Use the dynamic radar cruise control system when
it becomes available again.
Warning messageDetails/Actions
(F SPORT
models)

4697-2. Steps to take in an emergency
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
7
When trouble arises
Indicates a malfunction in the smart access system with
push-button start
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
 Clean off the dirt, snow, ice, etc. and drive the vehi-
cle with the operation conditions of the BSM func-
tion ( P. 295) satisfied for approximately 10
minutes. If the warning me ssage does not disappear,
the sensor may be misaligned. Have the vehicle
inspected by your Lexus dealer.
Indicates a malfunction in the dynamic radar cruise con-
trol system Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in the LDA (Lane Departure
Alert with steering control) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions

4707-2. Steps to take in an emergency
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
The operation conditions of the camera sensor are not
met.
The following systems may be suspended until the
problem shown in the message is resolved.
• PCS (Pre-Collision System)
• LDA (Lane Departure Alert with steering control)
• Dynamic radar cruise control
•Automatic High Beam
 P. 260
Indicates that the system is temporarily unavailable due
to a malfunction in a sensor other than the camera sen-
sor
A buzzer also sounds.
 Turn the LDA (Lane Departure Alert with steering
control) system off, wait for a little while, and then
turn the LDA (Lane Depart ure Alert with steering
control) system back on.
Warning messageDetails/Actions