sensor Lexus CT200h 2013 (in English) Service Manual

2824-5. Using the driving support systems
CT200h_OM_OM76102E_(EE)
WA R N I N G
When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary in any of the following situations.
When water or snow thrown up by the surrounding vehicles hinders the func-
tioning of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the lug-
gage compartment etc.)
Vehicles that cut in suddenly
Vehicles with small rear ends (trailers with no load on board etc.)
Motorcycles traveling in the same lane
Handling the radar sensor
Observe the following to ensure the pre-crash safety system can function effec-
tively:
Keep the sensor and front grille cover clean at all times.
Clean the sensor and front grille cover with a soft cloth so you do not mark or
damage them.
Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may become inaccu-
rate or malfunction. If the sensor or surrounding area is subject to a strong
impact, always have the area inspected and adjusted by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
Do not disassemble the sensor.
Do not attach accessories or stickers to the sensor, grille cover or surrounding
area.
Do not modify or paint the sensor and grille cover.

4496-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
6
Interior features
Registering air conditioning settings to electronic keys (vehicles with a smart
entry & start system)
Unlocking the vehicle using an electronic key and turning the power switch to
ON mode will recall that key’s registered air conditioning settings.
When the power switch is turned off, the current air conditioning settings will
automatically be registered to the electronic key that was used to unlock the
vehicle.
The system may not operate correctly if more than one electronic key is in the
vicinity or if the smart entry & start system is used to unlock a passenger door.
Settings for the electronic key and the corresponding door can be changed.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after the “AUTO” button is pressed or “AUTO” is selected.
Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Press-
ing “A/C” button or selecting “A/C” will dehumidify the air from the outlets
and defog the windshield effectively.
If you turn “A/C” off, the windows may fog up more easily.
The windows may fog up if the recirculated air mode is used.
Windshield fog detection function (if equipped)
When automatic mode is set, the humidity sensor (P. 451) detects fog on the
windshield and controls the air conditioning system to prevent fog.
Outside/recirculated air mode
When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing out-
side air from entering the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

4516-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
6
Interior features
WA R N I N G
To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The
difference between the temperature of the outside air and that of the wind-
shield can cause the outer surface of the windshield to fog up, blocking your
vision.
To prevent burns
Do not touch the rear view mirror surfaces when the outside rear view mirror
defoggers are on.
Do not touch the glass at lower part of the windshield or to the side of the
front pillars when the windshield wiper de-icer is on. (vehicles with wind-
shield wiper de-icer)
NOTICE
Humidity sensor (if equipped)
To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
hybrid system is off.
Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers from
defogging.
In order to detect fog on the windshield, a
sensor which monitors the temperature of
the windshield, the surround humidity, etc.
is installed. (P. 449)
Follow these points to avoid damaging the
sensor:
Do not disassemble the sensor
Do not spray the glass cleaner on the sen-
sor or subject it to strong impacts
Do not stick anything on the sensor

4566-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
Registering air conditioning settings to electronic keys (vehicles with a smart
entry & start system)
Unlocking the vehicle using an electronic key and turning the power switch to
ON mode will recall that key’s registered air conditioning settings.
When the power switch is turned off, the current air conditioning settings will
automatically be registered to the electronic key that was used to unlock the
vehicle.
The system may not operate correctly if more than one electronic key is in the
vicinity or if the smart entry & start system is used to unlock a passenger door.
Settings for the electronic key and the corresponding door can be changed.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after the “AUTO” button is pressed.
Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Press-
ing “A/C” button on will dehumidify the air from the outlets and defog the
windshield effectively.
If you turn “A/C” off, the windows may fog up more easily.
The windows may fog up if the recirculated air mode is used.
Windshield fog detection function (if equipped)
When automatic mode is set, the humidity sensor (P. 458) detects fog on the
windshield and controls the air conditioning system to prevent fog.
Outside/recirculated air mode
When driving on dusty roads such as tunnels or in heavy traffic, set
to the recirculated air mode. This is effective in preventing out-
side air from entering the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

4586-1. Using the air conditioning system and defogger
CT200h_OM_OM76102E_(EE)
WA R N I N G
To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The
difference between the temperature of the outside air and that of the wind-
shield can cause the outer surface of the windshield to fog up, blocking your
vision.
To prevent burns
Do not touch the rear view mirror surfaces when the outside rear view mirror
defoggers are on.
Do not touch the glass at lower part of the windshield or to the side of the
front pillars when the windshield wiper de-icer is on. (vehicles with wind-
shield wiper de-icer)
NOTICE
Humidity sensor (if equipped)
To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
hybrid system is off.
Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers from
defogging.
In order to detect fog on the windshield, a
sensor which monitors the temperature of
the windshield, the surround humidity, etc.
is installed. (P. 456)
Follow these points to avoid damaging the
sensor:
Do not disassemble the sensor
Do not spray the glass cleaner on the sen-
sor or subject it to strong impacts
Do not stick anything on the sensor

4827-1. Maintenance and care
CT200h_OM_OM76102E_(EE)
WA R N I N G
When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
When cleaning the windshield (vehicles with rain-sensing windshield wipers)
When the upper part of the windshield where the raindrop sensor is located is
touched by hand
When a wet rag or similar is held close to the raindrop sensor
If something bumps against the windshield
If you directly touch the raindrop sensor body or if something bumps into the
raindrop sensor
Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled
sufficiently, as touching a hot exhaust pipe can cause burns.
Set the wiper switch to off.
If the wiper switch is in “AUTO”, the wip-
ers may operate unexpectedly in the fol-
lowing situations, and may result in hands
being caught or other serious injuries and
cause damage to the wiper blades.
Off

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).

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)

5818-2. Steps to take in an emergency
CT200h_OM_OM76102E_(EE)
8
When trouble arises
Indicates that the P position switch is pressed while
the vehicle is running.
The shift position automatically changed to N.
A buzzer also sounds.
To shift the shift position to P, stop the vehicle
completely and press the P position switch.
To continue driving, shift the shift position to D
or R.
Indicates a malfunction in the P position control
system
In this situation, there is a possibility that the
parking lock mechanism will not work.
When parking, park the vehicle on a flat surface
and apply the parking brake securely. Also, it
may not be possible to turn the power switch off.
If this happens, applying the parking brake will
enable the switch to be turned off.
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 the radar cruise control sensor is dirty
or covered with ice
A buzzer also sounds.
Clean the sensor.
Warning messageDetails/Actions
(Flashes)