Page 572 of 688

5688-2. Steps to take in an emergency
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If a warning light turns on or a warning buzzer sounds
Calmly perform the following actions if any of the warning lights comes
on or flashes. If a light comes on or flashes, but then goes off, this does
not necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light and warning buzzer (red indica-
tor)
*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released, the system is operating normally.
Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional. Continuing to drive the
vehicle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
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5708-2. Steps to take in an emergency
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Slip indicator light
Indicates a malfunction in:
• The VSC system;
• The TRC system; or
• The hill-start assist control system
The light will flash when the above systems and/or ABS are
operating.
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.
(If equipped)
Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight leveling
system
Have the vehicle inspected by any authorized Lexus dealer
or repairer, or another duly qualified and equipped profes-
sional immediately.
High coolant temperature warning light
Changes from a flashing to a solid light when the engine
coolant temperature increases
Stop and check. (P. 629)
Open door warning light (warning buzzer)*2
Indicates that a door is not fully closed
Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 6.8 L (1.8
gal., 1.5 Imp.gal.) or less
Refuel the vehicle.
Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)
*3
Warns the driver and/or front passenger to fasten their seat
belts
Fasten the seat belt.
If the front passenger’s seat is occupied, the front passen-
ger’s seat belt also needs to be fastened to make the warning
light (warning buzzer) turn off.
Rear passengers’ seat belt reminder lights (warning buzzer)*4
Warns the rear passengers to fasten their seat belts in the fol-
lowing situations:
• A rear door is opened and closed.
*5
• A rear passenger fastens their seat belt and then unfastens
it.
Fasten the seat belt.
Warning lightWarning light/Details/Actions
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5738-2. Steps to take in an emergency
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8
When trouble arises
When a tire is replaced with a spare tire (vehicles with a compact spare tire and
the tire pressure warning system)
The compact spare tire is not equipped with a tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire has been replaced with the spare tire. Replace the spare tire
with the repaired tire and adjust the tire inflation pressure. The tire pressure
warning light will go off after a few minutes.
Conditions that the tire pressure warning system may not function properly (vehi-
cles with the tire pressure warning system)
P. 514
If the tire pressure warning light frequently comes on after blinking for 1 minute
(vehicles with the tire pressure warning system)
If the tire pressure warning light frequently comes on after blinking for 1 minute
when the power switch is turned to ON mode, have it checked by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or
audio sound.
WA R N I N G
If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional. The
vehicle will become extremely unstable during braking, and the ABS system
may fail, which could cause an accident resulting in death or serious injury.
When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly
and operate using more force than usual.
Page 579 of 688
5758-2. Steps to take in an emergency
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8
When trouble arises
If a warning message is displayed
Master warning light
The master warning light also comes on or flashes in order to indicate that a
message is currently being displayed on the multi-information display.
Multi-information display
If any of the warning lights come on again after the following actions
have been performed, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
If a warning is shown on the multi-information display, stay calm and
perform the following actions:
Vehicles with monochrome dis-
playVehicles with color display
1
2
Page 581 of 688
5778-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
8
When trouble arises
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 5 km/h (3 mph),
a buzzer sounds to indicate that the door(s) are
not yet fully closed.
Make sure that all the doors are closed.
Indicates that the hood is not fully closed
Close the hood.
Indicates that the back door is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
a buzzer sounds to indicate that the back door is
not yet fully closed.
Close the back door.
(If equipped)
Indicates a malfunction in the Lexus parking assist-
sensor
All the sensor lights flash.
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Warning messageDetails/Actions
Page 582 of 688
5788-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
(If equipped)
Indicates a malfunction in the Lexus parking assist-
sensor
All the sensor lights come on.
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
(If equipped)
Indicates that a Lexus parking assist-sensor is dirty
or covered with ice
All the sensor lights flash.
A buzzer also sounds.
Clean the sensor.
(If equipped)
Indicates that a Lexus parking assist-sensor is dirty
or covered with ice
All the sensor lights come on.
A buzzer also sounds.
Clean the sensor.
Indicates that the accelerator pedal is depressed
while the shift position is in N
A buzzer also sounds.
Release the accelerator pedal and shift the shift
position to D or R.
Warning messageDetails/Actions
(Flashes)
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5828-2. Steps to take in an emergency
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(If equipped)
Indicates that the dynamic radar cruise control sys-
tem is unable to judge vehicle-to-vehicle distance
A buzzer also sounds.
If the windshield wipers are on, turn them off or
set them to either intermittent or slow mode.
(If equipped)
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control 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 any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
(If equipped)
Indicates a malfunction in the pre-crash safety sys-
tem
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Indicates that the power 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.
Warning messageDetails/Actions
(Flashes)
(Flashes)
Page 624 of 688

6208-2. Steps to take in an emergency
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If the hybrid system will not start
One of the following may be the cause of the problem:
The electronic key may not be functioning properly.* (P. 622)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. (P. 8 3 )
There may be a malfunction in the immobilizer system.* (P. 8 7 )
There may be a malfunction in the P position control system.*
(P. 199, 581)
The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. (P. 621)
*: It may not be possible to shift the shift position other than P.
One of the following may be the cause of the problem:
The 12-volt battery may be discharged. (P. 624)
The 12-volt battery terminal connections may be loose or corroded.
(P. 504)
Reasons for the hybrid system not starting vary depending on the situa-
tion. Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. (P. 196)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.