sensor LEXUS RX350 2011 Service Manual

242
2-4. Using other driving systems
When the system is activated in the situations described above, there is also a possi-
bility 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.
nObstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may also be
occasions when the sensor cannot detect pedestrians, animals, bicycles, motorcy-
cles, trees, or snowdrifts.
nWhen there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. (→P. 535, 545)
nCertification
For vehicles sold in U.S.A.
FCC ID: HYQDNMWR005
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncon-
trolled environment.
This equipment should be installed and operated with minimum distance of 20 cm
between the radiator (antenna) and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

243
2-4. Using other driving systems
2

When driving
CAUTION
nLimitations of the pre-collision system
Do not rely on the pre-collision system. Always drive safely, taking care to observe
your surroundings and checking for any obstacles or other road hazards.
Failure to do so may cause an accident resulting in death or serious injury.
nWhen the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary in any of the following situations.
lWhen water or snow thrown up by the surrounding vehicles hinders the function-
ing of the sensor
lWhen your vehicle is pointing upwards (caused by a heavy load in the luggage
compartment etc.)
lVehicles that cut in suddenly
lVehicles with small rear ends (trailers with no load on board etc.)
lMotorcycles traveling in the same lane
nHandling the radar sensor
Observe the following to ensure the pre-collision system can function effectively:
lKeep the sensor and front grille clean at all times.
Clean the sensor and front grille with a soft cloth so you do not mark or damage
them.
lDo not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction. If the
sensor or surrounding area is subject to a strong impact, always have the area
inspected and adjusted by your Lexus dealer.
lDo not disassemble the sensor.
lDo not attach accessories or stickers to the sensor, grille or surrounding area.
lDo not modify or paint the sensor and grille cover.

435
3-7. Other interior features
3

Interior features
nConditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
lThe vehicle is stopped immediately after turning.
lThe vehicle is on an inclined surface.
lThe vehicle is in a place where the earth's magnetic field is subject to interfer-
ence by artificial magnetic fields (underground car park/parking lot, under a
steel tower, between buildings, roof car park/parking lot, near an intersection,
near a large vehicle, etc.).
lThe vehicle has become magnetized. (There is a magnet or metal object near
the inside rear view mirror.)
lThe battery has been disconnected.
lA door is open.
CAUTION
nWhile driving the vehicle
Do not adjust the display. Adjust the display only when the vehicle is stopped.
nWhen doing the circling calibration
Secure a wide space, and watch out for people and vehicles in the vicinity. Do not
violate any local traffic rules while performing circling calibration.
NOTICE
nTo avoid compass malfunctions
Do not place magnets or any metal objects near the inside rear view mirror.
Doing this may cause the compass sensor malfunction.
nTo ensure normal operation of the compass
lDo not perform a circling calibration of the compass in a place where the earth's
magnetic field is subject to interference by artificial magnetic fields.
lDuring calibration, do not operate electric systems (moon roof, power windows,
etc.) as they may interfere with the calibration.

5

When trouble arises
533
5-1. Essential information
Event data recorder
In a crash or a near crash event
The SRS airbag sensor assembly contains the EDR. In a crash or near
crash event, this device may record some or all of the following informa-
tion:
lEngine speed
lWhether the brake pedal was applied or not
lVehicle speed
lTo what extent the accelerator pedal was depressed
lPosition of the transmission shift lever
lWhether the driver and front passenger wore seat belts or not
lDriver's seat position
lSRS airbag deployment data
lSRS airbag system diagnostic data
lFront passenger’s occupant classification
The information above is intended to be used for the purpose of improv-
ing vehicle safety performance. Unlike general data recorders, the EDR
does not record sound data such as conversation between passengers.
Your vehicle has computers that monitor and control certain aspects of
your vehicle. These computers assist in driving and maintaining optimal
vehicle performance.
Besides storing data useful for troubleshooting, there is an event data
recorder (EDR) that records data in a crash or near crash event.

5

When trouble arises
539
5-2. Steps to take in an emergency
nSRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side and curtain shield airbag sensors, curtain shield airbag sensors, driver's seat
position sensor, driver's seat belt buckle switch, front passenger occupant classifi-
cation system, “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front
passenger's seat belt buckle switch, seat belt pretensioner assemblies, inflators,
interconnecting wiring and power sources. (→P. 1 0 9 )
nFront passenger detection sensor, passenger seat belt reminder and warning
buzzer
lIf 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.
lIf a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
nElectric power steering system warning light
When the voltage is low or drops, the power steering warning light may come on.
nIf the malfunction indicator lamp comes on while driving
First check the following:
lIs the fuel tank empty?
If it is, fill the fuel tank immediately.
lIs the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.

548
5-2. Steps to take in an emergency
(Flashes)
(If equipped)
Indicates a malfunction in the adaptive front lighting
system
(If equipped)
Indicates a malfunction in the pre-collision system
(If equipped)
Indicates a malfunction in the intuitive parking assist
The malfunctioning assist-sensor is flashing.
Wa r n i n g m e s s a g eDetails

5

When trouble arises
553
5-2. Steps to take in an emergency
(U.S.A. only)
Indicates that the engine
oil is scheduled to be
changed
Check the engine oil, and
change if necessary.
Comes on approximately
4500 miles (7200 km)
after the engine oil is
changed. (The indicator
will not work properly
unless the oil mainte-
nance data has been
reset.)
(U.S.A. only)
Indicates that the engine
oil and oil filter should be
changed
Have the engine oil and oil
filter checked and
changed by your Lexus
dealer.
(Flashes)
(If equipped)
Indicates that the AWD
system is not currently
functional
A buzzer also sounds.
Reduce vehicle speed or
stop the vehicle in a safe
place until the warnings
clear.
In this case, do not stop
the engine.
(If equipped)
Indicates that the pre-
collision system is not
currently functional
Clean the grille and the
sensor.
This message appears
when the pre-collision
system is hot. In this case,
wait until the system
cools down.
Wa r n i n g m e s s a g eDetailsCorrection procedure

554
5-2. Steps to take in an emergency
(If equipped)
Indicates that intuitive
parking assist is dirty or
covered with ice
A buzzer also sounds.
Clean the sensor.
(Flashes)
(If equipped)
Indicates that the radar
cruise control sensor is
dirty or covered with ice
A buzzer also sounds.
Clean the sensor.
(Flashes)
(If equipped)
Indicates that the radar
cruise control system 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 a mode other than
“AUTO” or high speed
wiper operation.
(Flashes)
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in radar cruise
mode)
At the same time,
will appear on
the head-up display.
Slow the vehicle by apply-
ing the brakes.
Wa r n i n g m e s s a g eDetailsCorrection procedure

625
6-2. Customization
6

Vehicle specifications
Power back
door
(→P. 5 1 )
Power back
door opening
operation using
the back door
opener button
OffOn———O
Wireless
remote con-
trol
(→P. 4 3 )
Unlocking oper-
ation
Driver's
door
unlocked
in one step,
all doors
unlocked
in two
steps
All doors
unlocked
in one step
O—OO
Automatic
light control
system
(→P. 1 8 4 )
Ti m e e l a p s e d
before the head-
lights turn off
30 sec-
onds
Off
O—OO
60 sec-
onds
90 sec-
onds
Light sensor
sensitivityStandard-2 to 2O—OO
Daytime run-
ning light systemOnOffO—OO
Automatic high
beam systemOnOff———O
ItemFunctionDefault
setting
Custom-
ized
setting

626
6-2. Customization
Illumination
(→P. 3 9 6 )
Ti m e e l a p s e d
before the inte-
rior lights turn off
15 seconds
Off
O—OO
7. 5 s e c -
onds
30 sec-
onds
Ti m e e l a p s e d
before the exte-
rior lights turn off
15 seconds
Off
O—OO
7. 5 s e c -
onds
30 sec-
onds
Sensitivity of the
ambient light
sensor used for
dimming the
meter lights etc.
Standard-2 to 2O——O
Sensitivity of the
ambient light
sensor used for
brightening the
meter lights etc.
Standard-2 to 2O——O
Footwell lightsOnOff———O
Outer foot lightsOnOff———O
ItemFunctionDefault
setting
Custom-
ized
setting