sensor Lexus CT200h 2011 (in English) Service Manual

295
2-4. Using other driving systems
2
When driving
CT200h_EE (OM76041E)
Conditions that may trigger the system even if there is no possibility of a
collision
When there is an object by the roadside at the entrance to a curve
When passing an oncoming vehicle on a curve
When driving over a narrow iron bridge
When there is a metal object on the road surface
When driving on an uneven road surface (nose up, nose down)
When passing an oncoming vehicle on a left-turn (left-hand drive vehi-
cles) or right-turn (right-hand drive vehicles)
When your vehicle rapidly closes on the vehicle in front
When a grade separation/interchange, sign, billboard, or other structure
appears to be directly in the vehicle’s line of travel
When the steep angle of the road causes a metal object located beneath
the road surface to be seen ahead of the vehicle
When an extreme change in vehicle height occurs
When the axis of the radar is out of adjustment
When passing through certain toll gates
When passing through an overpass
When the system is activated in the situations described above, there is also
a possibility that the seat belts will retract quickly and the brakes will be
applied with a force greater than normal. When the seat belt is locked in the
retracted position, stop the vehicle in a safe place, release the seat belt and
refasten it.
Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may
also be occasions when the sensor cannot detect pedestrians, animals, bicy-
cles, motorcycles, trees, or snowdrifts.
When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. (P. 558,
565)

296
2-4. Using other driving systems
CT200h_EE (OM76041E)
Situations in which the pre-crash safety system does not function properly
The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
If a vehicle suddenly moves in front of vehicle, such as at an intersection
If a vehicle suddenly cuts in front of vehicle, such as when overtaking
In inclement weather such as heavy rain, fog, snow or sand storms
When your vehicle is skidding with the VSC system off
When an extreme change in vehicle height occurs
When the axis of the radar is out of adjustment
Automatic cancelation of the pre-crash safety system
When a malfunction occurs due to sensor contamination, etc. that results in
the sensors being unable to detect obstacles, the pre-crash safety system will
be automatically disabled. In this case, the system will not activate even if
there is a collision possibility.

300
2-4. Using other driving systems
CT200h_EE (OM76041E)
CAUTION
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
functioning of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the
luggage 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
effectively:
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
inaccurate or malfunction. If the sensor or surrounding area is subject to a
strong impact, always have the area inspected and adjusted by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
Do not disassemble the sensor.
Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
Do not modify or paint the sensor and grille cover.

319
3-1. Using the air conditioning system and defogger
3
Interior features
CT200h_EE (OM76041E)
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and
ambient conditions. As a result, the following may occur:
Immediately after the button is pressed, the fan may stop for a while
until warm or cool air is ready to flow.
Cool air may flow to the area around the upper body when the heater is
on.
Humidity sensor (if equipped)
Using the system in recirculated air mode
The windows will fog up more easily if recirculated air mode is used.
Switching between outside air and recirculated air modes
Recirculated air mode or outside air mode may be automatically switched to
in accordance with the temperature setting and the inside temperature.
Window defogger feature
Recirculated air mode may automatically switch to (outside air)
mode in situations where the windows need to be defogged.
A sensor, which detects humidity inside
the vehicle and the temperature of the
windshield, is provided to detect fog on
the front windscreen. Due to the sensor,
when automatic mode is set the air condi-
tioning may make the following controls:
Changing the amount of air flow
Changing the amount of air introduced
from outside when in outside air mode
with the air vents in the position
Changing the settings of the air vents to
when the is set

322
3-1. Using the air conditioning system and defogger
CT200h_EE (OM76041E)
NOTICE
To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the
hybrid system is off.
Humidity sensor (if equipped)
Follow these points to avoid damaging the sensor.
Do not disassemble the sensor
Do not spray the glass cleaner on the sensor or subject it to strong impacts
Do not stick anything on the sensor

468
4-1. Maintenance and care
CT200h_EE (OM76041E)
Outside rear view mirror rain-clearing coating
Observe the following precautions in order to retain the rain-clearing prop-
erties of the mirrors:
Clean the mirrors using a car shampoo or glass cleaner that does not con-
tain silicone or an abrasive compound, and rinse thoroughly with water.
Allow the mirrors to be exposed to direct sunlight for 1 to 2 days.
CAUTION
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 wip-
ers)
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
wipers may operate unexpectedly in the
following situations, and may result in
hands being caught or other serious inju-
ries and cause damage to the wiper
blades.
Off

529
4-3. Do-it-yourself maintenance
4
Maintenance and care
CT200h_EE (OM76041E)
2PANEL10 A
Audio system, Lexus parking
assist-sensor switch, windshield
wiper de-icer switch, navigation
system, fuel filler door opener,
glove box light, headlight cleaner
switch, emergency flasher switch,
manual headlight leveling dial, air
conditioning system, outside rear
view mirrors, driving mode select
switches, P position switch, instru-
ment panel light control dial, shift
position indicators, seat heater
switches, heated steering wheel
switch, pre-crash braking off
switch
3IGN10 A
Electronically controlled brake
system, smart entry & start system,
multiport fuel injection system/
sequential multiport fuel injection
system, stop/tail lights, SRS air-
bags
4MET7.5 AGauges and meters
FuseAmpereCircuit

530
4-3. Do-it-yourself maintenance
CT200h_EE (OM76041E)
5WIP30 AWindshield wipers
6RR WIP20 ARear window wiper and washer
7WASHER15 AWindshield washer
8A/C10 AAir conditioning system
9GAUGE10 A
Windshield wiper de-icer switch,
automatic headlight leveling sys-
tem
10ECU-IG NO.210 A
Windshield wipers, Lexus parking
assist monitor, Lexus parking
assist-sensor, electronically con-
trolled brake system, navigation
system, electric power steering
system, turn signal lights, emer-
gency flashers, yaw rate and G
sensor, headlight cleaner, outside
rear view mirrors, driving mode
select switches, overhead module,
pre-crash seat belts, seat heater
switches, heated steering wheel
switch, dynamic radar cruise con-
trol
11ECU-IG NO.110 ANo circuit
12S/ROOF30 AMoon roof
FuseAmpereCircuit

5
563
5-2. Steps to take in an emergency
When trouble arises
CT200h_EE (OM76041E)
*1:Open door warning buzzer:
P. 569
*2: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.
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 of the voltage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.

568
5-2. Steps to take in an emergency
CT200h_EE (OM76041E)
Warning messageDetails
(Flashes)
(If equipped)
Indicates a malfunction in the pre-crash safety
system
(If equipped)
Indicates a malfunction in the Lexus parking
assist-sensor
The malfunctioning assist-sensor is flashing.
Indicates a malfunction in the radar cruise control
system (if equipped) or the cruise control system
Press the “ON-OFF” button once to deactivate
the system, and then press the button again to
reactivate the system.