2013 Lexus CT200h warning light

5718-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
8
When trouble arises
*1: Brake system warning buzzer:
When there is a possible problem that could affect braking performance, the
warning light will come on and a warning buzzer will sound.
Parking brake engaged warning buzzer:
P. 580
*2Open door warning buzzer:
P. 577
*3: Driver’s and front passenger’s seat belt buzzer:
The driver’s and front passenger’s seat belt buzzer sounds to alert the driver
and front passenger that his or her seat belt is not fastened. The buzzer sounds
for 30 seconds after the vehicle reaches a speed of 20 km/h (12 mph). Then, if
the seat belt is still unfastened, the buzzer will sound in a different tone for 90
more seconds.
*4: Rear passengers’ seat belt buzzer:
The rear passengers’ seat belt buzzer sounds to alert the driver that the rear
seat belt is not fastened. The buzzer sounds for 30 seconds after the vehicle
reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 90 more seconds.
*5: If the rear seat belt is not fastened, the light will go off after a short period of
time.
Master warning light
A buzzer sounds and the warning light comes on and flashes
to indicate that the master warning system has detected a
malfunction.
P. 5 7 5
(If equipped)
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes (P. 572)
• Flat tire (P. 591, 605)
Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minutes. In case the light
does not turn off even if the tire inflation pressure is
adjusted, have the system checked by any authorized Lexus
dealer or repairer, or another duly qualified and equipped
professional.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system (P. 573)
Have the system checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped profes-
sional.
Warning lightWarning light/Details/Actions

5728-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound
even if a passenger is not sitting in the seat.
If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the
warning buzzer may sound.
If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes com-
pletely empty. If the fuel tank is empty, refuel the vehicle immediately. The mal-
function indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as soon as
possible.
When the tire pressure warning light comes on (vehicles with the tire pressure
warning system)
Inspect the appearance of the tire to check that the tire is not punctured.
If the tire is punctured: P. 591, 605
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered suffi-
ciently.
Check the tire inflation pressure and adjust to the appropriate level.
If the warning light does not go out even after several minutes, check that the
tire inflation pressure is at the specified level and carry out initialization. (P.
512)
The warning light may come on again if the above operations are conducted
without first allowing the tire temperature to lower sufficiently.
The tire pressure warning light may come on due to natural causes (vehicles with
the tire pressure warning system)
The tire pressure warning light may turn on due to natural causes such as natural
air leaks or tire inflation pressure changes caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few
minutes).

5738-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
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.

5748-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
WA R N I N G
If the tire pressure warning light comes on (vehicles with the tire pressure warn-
ing system)
Be sure to observe the following precautions. Failure to do so could cause a
loss of vehicle control and result in death or serious injury.
Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation
pressure immediately.
Vehicles with a spare tire: If the tire pressure warning light comes on even
after tire inflation pressure adjustment, it is probable that you have a flat tire.
Check the tires. If a tire is flat, change it with the spare tire and have the flat
tire repaired by the nearest any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Vehicles with an emergency tire puncture repair kit: If the tire pressure warn-
ing light comes on even after tire inflation pressure adjustment, it is probable
that you have a flat tire. Check the tires. If a tire is flat, repair the flat tire by
using emergency tire puncture repair kit.
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
If a blowout or sudden air leakage should occur (vehicles with the tire pressure
warning system)
The tire pressure warning system may not activate immediately.
NOTICE
To ensure the tire pressure warning system operates properly (vehicles with the
tire pressure warning system)
Do not install tires with different specifications or makers, as the tire pressure
warning system may not operate properly.

5758-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
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-
playVehicles with color display
1
2

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

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)

5828-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
(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)